DR. JOHN BENJAMIN COLBY MD, PHD
NPI 1700205374
Radiology - Neuroradiology in Greenbrae, CA

Q: What is John Colby's NPI number?

The NPI number for John Colby is 1700205374. It was assigned to this individual provider in the NPPES registry on April 10, 2014.

Q: What is John Colby's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.

Q: When was this NPI record last updated?

The NPPES record for John Colby was last updated on July 1, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 10, 2014PECOS EnrolledAccepts Medicare Assignment

94.77/100

CMS Quality Rating

250 BON AIR RD, GREENBRAE, CA 94904(415) 925-7301 Get Directions Write a Review

NPPES record last updated: July 1, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. John Benjamin Colby Md, Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN BENJAMIN COLBY MD, PHD (NPI 1700205374) is an individual neuroradiology provider in Greenbrae, California, licensed in California (A139185) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2014).

NPPES Registry Identity

NPI1700205374

Entity TypeIndividualMale

Primary Taxonomy2085N0700X

Provider Legal NameDR. JOHN BENJAMIN COLBYCredential: MD, PHD

Location Address250 BON AIR RDGreenbrae, CA 94904-1702

Mailing Address500 Redwood Blvd Ste 300Novato, CA 94947-6921 · (415) 884-3415

Phone(415) 925-7301

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2014

Enumeration DateApril 10, 2014

Last NPPES UpdateJuly 1, 2020

NPPES CertifiedJuly 1, 2020

✔ NPI 1700205374 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · NeuroradiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085N0700X

License✔ Licensed in CA · A139185

Definition

A radiologist who diagnoses and treats diseases utilizing imaging procedures as they relate to the brain, spine and spinal cord, head, neck and organs of special sense in adults and children.

250 BON AIR RD, Greenbrae, CA 94904

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John Benjamin Colby Md, Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9931520194

PECOS Enrollment IDI20200527000629

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 116

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

1,009 services852 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

571 services529 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

365 services348 patients

Mri scan of brain without contrast 70551

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

280 services273 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

238 services218 patients

Mri scan of brain before and after contrast 70553

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

220 services210 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

200 services199 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

195 services189 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

188 services184 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

162 services157 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

161 services157 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

161 services130 patients

Ct scan of blood vessels of neck with contrast 70498

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

151 services148 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

150 services131 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

149 services146 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

147 services144 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

145 services138 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

141 services136 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

138 services138 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

135 services132 patients

Mri scan of pelvis before and after contrast 72197

An MRI scan of the pelvis before and after contrast is a non-invasive imaging technique. It uses magnetic fields and radio waves to capture detailed images of your lower abdomen. Contrast dye, safe for the body, improves image clarity. This helps detect abnormalities more accurately.

133 services130 patients

X-ray of knee, 3 views 73562

133 services104 patients

Screening 3d breast mammography 77063

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

124 services124 patients

Screening mammography 77067

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

124 services124 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

121 services121 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

117 services90 patients

X-ray of hip, 2-3 views 73502

113 services110 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

112 services98 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

110 services110 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

102 services100 patients

X-ray of knee, 4 or more views 73564

102 services82 patients

X-ray of lower and sacral spine, 2-3 views 72100

100 services87 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

98 services98 patients

X-ray of shoulder, minimum of 2 views 73030

91 services77 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

90 services90 patients

Ct scan of face without contrast 70486

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

88 services87 patients

X-ray of foot, minimum of 3 views 73630

87 services70 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

87 services87 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

83 services82 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

82 services74 patients

X-ray of hand, minimum of 3 views 73130

81 services68 patients

Mri scan of abdomen before and after contrast 74183

An MRI scan of the abdomen before and after contrast provides detailed images of your abdominal organs. Initially, images are taken without a contrast agent. Then, a safe dye is administered, usually via an IV, to highlight certain areas, giving a clearer picture to help diagnose various conditions.

78 services77 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

77 services72 patients

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830

An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.

77 services77 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

74 services73 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

73 services70 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

70 services67 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

67 services61 patients

Imaging for evaluation of swallowing function 74230

This process, known as a swallowing study, uses imaging technology to view how food and liquid move from your mouth to your stomach. It helps identify any issues you may have swallowing, which can be crucial for determining the best treatment plan.

65 services64 patients

Mri scan of bone of eye socket, face, and/or neck before and after contrast 70543

An MRI scan of the eye socket, face, and/or neck uses magnetic fields to create detailed images of these areas. Contrast dye helps highlight specific tissues for clearer pictures. It's non-invasive, aids in detecting abnormalities, and guides treatment plans.

60 services57 patients

Mri scan of blood vessels of head without contrast 70544

An MRI scan of the head's blood vessels without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the blood vessels in your head. This helps doctors diagnose conditions such as stroke, aneurysm, or other vascular disorders.

58 services55 patients

X-ray of entire middle and lower spine, 2-3 views 72082

An X-ray of your middle and lower spine involves capturing images of these areas to identify any abnormalities. The procedure involves taking 2-3 different views for a comprehensive understanding. It's non-invasive and usually painless, helping doctors diagnose conditions like fractures or infections.

57 services55 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

57 services56 patients

Ct scan of face without contrast 70486

54 services54 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

51 services50 patients

X-ray of wrist, minimum of 3 views 73110

51 services48 patients

Mri scan of lower spinal canal before and after contrast 72158

An MRI scan of the lower spinal canal with contrast is a non-invasive imaging procedure. It uses magnetic fields to generate detailed images of your lower spine. A contrast agent is injected to enhance these images, helping doctors see issues more clearly.

49 services46 patients

X-ray of ankle, minimum of 3 views 73610

49 services42 patients

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

46 services44 patients

X-ray of chest, 2 views 71046

44 services44 patients

X-ray of upper spine, 4-5 views 72050

An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.

44 services41 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

42 services42 patients

X-ray of upper spine, 4-5 views 72050

42 services42 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

42 services42 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

40 services40 patients

Ct scan of abdomen and pelvis before and after contrast 74178

A CT scan of your abdomen and pelvis with and without contrast helps visualize your internal organs better. Contrast is a special dye that improves the clarity of the images. It's taken orally or injected into your veins before the scan. The process is painless and quick.

37 services37 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

36 services36 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

35 services34 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

34 services34 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

33 services32 patients

X-ray of upper spine, 2-3 views 72040

30 services25 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

29 services27 patients

X-ray of both hips, 3-4 views 73522

An X-ray of both hips with 3-4 views is a safe imaging procedure. It involves capturing multiple pictures of your hip joints from different angles. This helps in diagnosing conditions like arthritis or fractures. You'll need to stay still during the process for clear images.

27 services27 patients

Ct scan of soft tissue of neck with contrast 70491

A CT scan of the neck with contrast is a non-invasive imaging procedure. A special dye is administered to highlight the soft tissues in your neck, making them easier to see. This helps detect issues like infections, tumors, or other abnormalities.

26 services26 patients

Mri scan of middle spinal canal before and after contrast 72157

An MRI scan of the middle spinal canal with contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your spine, both before and after a contrast dye is injected. The dye helps to highlight certain structures, providing a clearer picture for diagnosis.

26 services26 patients

Mri scan of pelvis without contrast 72195

An MRI scan of the pelvis without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of the lower part of your body. This helps doctors to identify any abnormalities or issues in that area.

26 services26 patients

X-ray of elbow, minimum of 3 views 73080

26 services21 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

25 services23 patients

X-ray of knee, 1-2 views 73560

24 services18 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

23 services23 patients

X-ray lower and sacral spine, 2-3 views bending views 72120

This procedure involves taking X-ray images of your lower and sacral spine in 2-3 different angles while you bend. It helps in assessing spinal flexibility and identifying any abnormalities or injuries. It's safe, quick, and usually painless.

22 services19 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

21 services19 patients

X-ray of middle spine, 2 views 72070

19 services19 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

19 services18 patients

Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) G0279

Diagnostic digital breast tomosynthesis is a 3D imaging test that allows doctors to examine your breast tissue layer by layer. It's performed on one or both sides. It helps in detecting abnormalities more accurately. It's often done in addition to other tests.

18 services18 patients

Injection of radioactive material for x-ray identification of lymph node 38792

This procedure involves injecting a safe radioactive substance into your body. It travels to your lymph nodes, making them visible on X-ray images. This helps in identifying any abnormal nodes for further examination. It's a standard part of many diagnostic processes.

17 services17 patients

Mri scan of blood vessels of neck before and after contrast 70549

An MRI scan of the neck's blood vessels, both before and after contrast, is a non-invasive imaging test that uses a magnetic field and radio waves to create detailed images. Contrast dye helps highlight the vessels more clearly. This helps in diagnosing conditions like blockages or abnormalities.

17 services17 patients

X-ray of entire middle and lower spine, 2-3 views 72082

17 services17 patients

X-ray of finger, minimum of 2 views 73140

17 services16 patients

Ct scan of leg without contrast 73700

A CT scan of the leg is a non-invasive imaging test that uses X-rays to capture detailed images of your leg's bones, muscles, and blood vessels. It doesn't use contrast dye and doesn't cause any pain. It helps in diagnosing injuries or diseases.

17 services17 patients

Mri scan of abdomen without contrast 74181

An MRI scan of the abdomen without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of your abdominal organs. This procedure doesn't involve radiation or dye injection.

17 services17 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

16 services15 patients

Ct scan of arm without contrast 73200

A CT scan of the arm without contrast is a non-invasive imaging test. It uses X-ray technology to capture detailed images of your arm's structures. It doesn't involve any contrasting dye, hence, minimal preparation is required. It helps in diagnosing injuries or conditions affecting the arm.

16 services16 patients

Ct scan of blood vessels and grafts of heart with contrast 75574

A CT scan of the heart's blood vessels and grafts with contrast is a diagnostic test. A special dye (contrast) is injected into your veins, which helps create clear images of your heart's vessels and grafts. This helps doctors detect blockages or other abnormalities.

16 services16 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

16 services16 patients

X-ray of middle and lower spine, 2 views 72080

An X-ray of the middle and lower spine, or 2-view lumbar spine X-ray, involves capturing images of your back. This helps detect issues like fractures, infections, or other abnormalities. It's painless and quick, taking only a few minutes.

15 services14 patients

Ct scan of middle spine without contrast 72128

A CT scan of the middle spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your mid-spine area. This scan helps doctors identify issues like fractures, tumors, or infections. No dye is used in this procedure.

15 services15 patients

Ct scan of pelvis without contrast 72192

A CT scan of the pelvis without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your lower abdomen area. It helps in detecting issues like injuries, inflammation, or abnormal growths. It doesn't involve any dye injection.

15 services15 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

15 services15 patients

X-ray of both hips, 3-4 views 73522

15 services15 patients

Single contrast x-ray of esophagus 74220

A single contrast x-ray of the esophagus is a non-invasive procedure where a radiopaque substance is swallowed to highlight the esophagus. This allows doctors to capture clear images of the area, aiding in the diagnosis of any abnormalities or issues.

15 services15 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

15 services15 patients

Diagnostic mammography of 1 breast 77065

Diagnostic mammography of 1 breast is a detailed imaging test that allows doctors to closely examine a specific area in the breast. It's often used when a routine screening reveals an abnormality. This test can help identify any unusual changes or issues.

15 services15 patients

Mri scan of upper spinal canal before and after contrast 72156

An MRI scan of the upper spinal canal before and after contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. Contrast dye is injected to enhance these images, providing clearer visuals for accurate diagnosis.

14 services14 patients

X-ray of sacrum and tailbone, minimum of 2 views 72220

An X-ray of the sacrum and tailbone involves capturing images of these lower spine areas from at least two different angles. This non-invasive procedure helps detect abnormalities or injuries, providing valuable information for accurate diagnosis and treatment.

14 services14 patients

X-ray of hip, 1 view 73501

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

14 services13 patients

X-ray of wrist, 2 views 73100

An X-ray of the wrist, 2 views, is a diagnostic procedure where two different images of your wrist are taken using a small amount of radiation. This helps identify any abnormalities or injuries such as fractures or arthritis. It's a quick, non-invasive process.

13 services12 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

13 services13 patients

Dxa bone density measurement of forearm, finger, hand, or foot 77081

A DXA bone density measurement of the forearm, finger, hand, or foot is a non-invasive procedure that uses X-rays to measure the amount of calcium and other minerals in your bones. This test helps to assess the strength of your bones and your risk of fractures.

13 services13 patients

Fine needle aspiration biopsy using ultrasound guidance, first growth 10005

Fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is inserted into a growth to extract a small sample. Ultrasound helps accurately locate the growth. This sample is then analyzed to determine the nature of the growth.

12 services11 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

12 services12 patients

X-ray of pelvis, 1-2 views 72170

11 services11 patients

X-ray of both hips, 2 views 73521

An X-ray of both hips, 2 views, is an imaging test that uses a small amount of radiation to create detailed pictures of your hip joints. This procedure helps to detect fractures, infections, or other abnormalities in the hip area. Two different angles will be captured for a comprehensive assessment.

11 services11 patients

Mri scan of heart before and after contrast 75561

An MRI scan of the heart with contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed pictures of your heart. The contrast dye improves the clarity of these images. This test helps in diagnosing heart conditions.

11 services11 patients

Mri scan of blood flow of heart 75565

An MRI scan of the heart's blood flow is a non-invasive imaging technique. It uses a magnetic field and radio waves to create detailed images of your heart and its blood vessels. This helps in diagnosing conditions like blockages or abnormalities.

11 services11 patients

Limited ultrasound scan of pelvis 76857

A limited ultrasound scan of the pelvis is a non-invasive imaging test. It uses high-frequency sound waves to create pictures of the lower abdomen area. This helps doctors view and assess the health of certain internal structures. It's painless and usually takes about 30 minutes.

11 services11 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.77/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

93.84

Improvement Activities

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MESKEREM DABA RN, BSN

Registered Nurse (Psychiatric/Mental Health)

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 473-6666

ALEC CHANG D.O.

Psychiatry & Neurology (Psychiatry)

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 473-6835

MARIN HOSPITALIST MEDICAL GROUP, INC.

Internal Medicine

250 BON AIR RD, 3RD FLOOR
GREENBRAE, CA 94904

Marin County (415) 925-7545

DR. STEPHEN C ALLISON M.D.

Psychiatry & Neurology (Psychiatry)

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 925-7663

ANNIE LINN STODDARD

Rehabilitation Practitioner

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 473-6835

SARENA NAPIER ASW

Counselor (Mental Health)

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 473-6619

JULIET LIANNE HUNTINGTON CNM

Advanced Practice Midwife

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 925-7010

ZAMBIA RICHEA PLAYER RN

Registered Nurse

250 BON AIR RD
GREENBRAE, CA 94904

Marin County (415) 473-6666

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Colby's NPI number?

The NPI number for John Colby is 1700205374. It was assigned to this individual provider in the NPPES registry on April 10, 2014.

Where is John Colby located?

John Colby practices at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 925-7301.

What is John Colby's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.

Is John Colby enrolled in Medicare?

Yes. John Colby is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for John Colby was last updated on July 1, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.