MARK KUANG-MIAN TU M.D.
NPI 1144262452
Radiology - Diagnostic Radiology in Walnut Creek, CA

Q: What is Mark Tu's NPI number?

The NPI number for Mark Tu is 1144262452. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Q: What is Mark Tu's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Mark Tu was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 12, 2006PECOS Enrolled

90.81/100

CMS Quality Rating

2125 OAK GROVE RD, SUITE 200, WALNUT CREEK, CA 94598(925) 296-7150(925) 296-7171 Get Directions Write a Review

NPPES record last updated: April 2, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Mark Kuang-mian Tu M.d. NPPES

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

MARK KUANG-MIAN TU M.D. (NPI 1144262452) is an individual diagnostic radiology provider in Walnut Creek, California, licensed in California (A60238) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical Branch At Galveston (1994).

NPPES Registry Identity

NPI1144262452

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameMARK KUANG-MIAN TUCredential: M.D.

Location Address2125 OAK GROVE RD, SUITE 200Walnut Creek, CA 94598-2536

Mailing Address2125 Oak Grove Rd, Suite 200Walnut Creek, CA 94598-2536 · (925) 296-7150 · Fax (925) 296-7171

Phone(925) 296-7150

Fax(925) 296-7171

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1994

Enumeration DateJune 12, 2006

Last NPPES UpdateApril 2, 2015

✔ NPI 1144262452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in CA · A60238

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

2125 OAK GROVE RD, Walnut Creek, CA 94598

Open in Google Maps ↗

Other Identifiers 6

OtherZZZ06472ZCA · Medicare

Medicare PIN00A602380CA

Medicare PIN00A602383CA

Other300114842CA · Railroad Medicare

Medicare UPING92997CA

OtherP00169856CA · Railroad Medicare

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Kuang-mian Tu M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2769462589

PECOS Enrollment IDI20040722000724, I20250109002819

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.

Medicare Billing Reassignments

Medicare enrollment records show Mark Tu reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bay Imaging Consultants Medical Group Inc

Same address

Diagnostic Radiology

2125 OAK GROVE RD STE 200
Walnut Creek, CA 94598

Reassigned Medicare billing, California and Hawaii enrollments
181 clinicians in this Medicare group

NPI 1831756139 (925) 296-7150

Michael P Sherman MD Phd, A Medical Corporation

0.7 mi

Hematology & Oncology

500 LENNON LN
Walnut Creek, CA 94598

Reassigned Medicare billing, California enrollment
60 clinicians in this Medicare group

NPI 1831201912 (925) 939-9610

John Muir Magnetic Imaging Center

1.7 mi

Diagnostic Radiology

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

Reassigned Medicare billing, California and Hawaii enrollments
129 clinicians in this Medicare group

NPI 1235184110 (925) 296-7156

John Muir Trauma Physicians Billing Service

1.7 mi

Trauma Surgery

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

Reassigned Medicare billing, California enrollment
810 clinicians in this Medicare group

NPI 1962551861 (925) 947-5331

Magnetic Imaging Affiliates, LLC

15 mi

Diagnostic Radiology

5730 TELEGRAPH AVE
Oakland, CA 94609

Reassigned Medicare billing, California and Hawaii enrollments
158 clinicians in this Medicare group

NPI 1487040770 (510) 204-2744

Solano Diagnostics Partners, A Calif Limited Partnership

21 mi

Diagnostic Radiology

4500 BUSINESS CENTER DR
Fairfield, CA 94534

Reassigned Medicare billing, California enrollment
88 clinicians in this Medicare group

NPI 1972006534 (855) 820-5256

County Of Santa Clara

35 mi

Clinic/Center

2741 MIDDLEFIELD RD
Palo Alto, CA 94306

Reassigned Medicare billing, California enrollment
Also billed through NPI 1043354020 (California), NPI 1629301346 (California)
2,460 clinicians in this Medicare group

NPI 1285228080 (408) 885-5000

Queens North Hawaii Community Hospital

2,362 mi

General Acute Care Hospital

67-1125 MAMALAHOA HWY
Kamuela, HI 96743

Reassigned Medicare billing, California enrollment
47 clinicians in this Medicare group

NPI 1477559029 (808) 881-4400

Queens University Medical Group

2,421 mi

Multi-Specialty

1301 PUNCHBOWL ST
Honolulu, HI 96813

Reassigned Medicare billing, California enrollment
48 clinicians in this Medicare group

NPI 1891441382 (808) 691-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 59

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.

924 services873 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.

789 services767 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.

499 services499 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.

499 services499 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.

252 services250 patients

Limited ultrasound scan of 1 breast 76642

A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.

212 services209 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.

200 services199 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.

170 services169 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.

170 services169 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.

169 services166 patients

Screening 3d breast mammography 77063

164 services164 patients

Screening mammography 77067

164 services164 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.

154 services154 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.

150 services148 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.

149 services149 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.

145 services143 patients

Diagnostic mammography of both breasts 77066

Diagnostic mammography involves using special imaging technology to capture detailed images of both breasts. This procedure helps in identifying any unusual changes or abnormalities. It's a crucial step in ensuring breast health and early detection of potential issues.

143 services143 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.

120 services118 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.

106 services103 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.

106 services106 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.

98 services98 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.

96 services95 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.

68 services68 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.

57 services56 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.

55 services55 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.

48 services48 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.

46 services46 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.

39 services38 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.

38 services38 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.

34 services34 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.

29 services29 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.

28 services26 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.

25 services25 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.

25 services24 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.

25 services25 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.

24 services24 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.

23 services23 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.

22 services22 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.

22 services18 patients

Biopsy of breast and placement of locating device using ultrasound, first growth 19083

A breast biopsy with locating device placement involves taking a small sample from an unusual growth, using ultrasound for precise targeting. This sample is studied for any abnormal cells. A locating device is also placed to mark the area for future reference.

18 services18 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.

18 services18 patients

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

18 services18 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.

17 services16 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.

17 services16 patients

Ct scan of chest without contrast 71250

16 services16 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.

16 services16 patients

Ct scan of lower spine with contrast 72132

A CT scan of the lower spine with contrast is a non-invasive imaging test that uses X-ray technology and a contrast dye to create detailed pictures of your lower spine. It helps in diagnosing conditions like herniated discs, fractures, or tumors.

16 services16 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.

16 services15 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.

15 services14 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.

15 services14 patients

Limited ultrasound scan of 1 breast 76642

15 services15 patients

Ct scan of middle spine with contrast 72129

A CT scan of the middle spine with contrast is a detailed imaging test. A special dye is used to highlight areas in your spine, providing clearer pictures. It helps doctors diagnose issues such as injuries, infections, or diseases in that area.

14 services14 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.

14 services14 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.

14 services14 patients

Ultrasound scan of scrotum 76870

An ultrasound scan of the scrotum is a non-invasive imaging test. It uses sound waves to create pictures of the structures within the lower abdominal area. This helps to assess any discomfort or abnormalities you might be experiencing. The procedure is safe and painless.

14 services14 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.

13 services13 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.

13 services13 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.

12 services12 patients

Ct scan of abdomen and pelvis with contrast 74177

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

90.81/100

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

Scored as part of a group practice

Quality

85.12

Improvement Activities

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.

DR. PHILIP J. RICH MD

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. JONATHAN FISH M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. JOSEPH CHAN M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. ASEEM OM RAWAL M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

CHRISTOPHER C LEE MD

Radiology (Vascular & Interventional Radiology)

2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

SUNIL GANDHI M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. RALPH WESLEY MUTCHLER M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. SANGEETA GAMBHIR M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. RONALD CHAN M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. RUBY CHANG M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. KEYVAN NOURI M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

JOAN REYNOLDS M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

KEITH EDWIN-MOSUN TAO M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-1756

ANGELO CRUDALE MD

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. NORMAN MOSCOW

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

STEPHEN HESSELTINE M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

SIVA P RAMAN

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, STE 200
WALNUT CREEK, CA 94598

Contra Costa County (410) 955-5173

DR. DANIEL KIM M.D.

Radiology (Vascular & Interventional Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. KIMBERLY M. BLUMBERG M.D

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

DR. YING FUNG M.D.

Radiology (Diagnostic Radiology)

2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598

Contra Costa County (925) 296-7150

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 Mark Tu's NPI number?

The NPI number for Mark Tu is 1144262452. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Mark Tu located?

Mark Tu practices at 2125 Oak Grove Rd Suite 200, Walnut Creek, CA 94598. The listed phone number is (925) 296-7150.

What is Mark Tu's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Mark Tu enrolled in Medicare?

Yes. Mark Tu is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Tu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Tu reassigns Medicare benefits to 9 organizations: Bay Imaging Consultants Medical Group Inc (Walnut Creek, CA), Michael P Sherman MD Phd, A Medical Corporation (Walnut Creek, CA), John Muir Magnetic Imaging Center (Walnut Creek, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA), Magnetic Imaging Affiliates, LLC (Oakland, CA) and 4 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Tu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Tu was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.