DR. STEPHEN J. KAHN M.D.
NPI 1790778728
Radiology - Diagnostic Radiology in Oakland, CA

Q: What is Stephen Kahn's NPI number?

The NPI number for Stephen Kahn is 1790778728. It was assigned to this individual provider in the NPPES registry on August 24, 2005.

Q: What is Stephen Kahn'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 Stephen Kahn was last updated on December 22, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 August 24, 2005PECOS EnrolledAccepts Medicare Assignment

66.24/100

CMS Quality Rating

411 30TH ST, #508, OAKLAND, CA 94609(925) 274-4950(925) 274-4975 Get Directions Write a Review

NPPES record last updated: December 22, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Stephen J. Kahn M.d. NPPES

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

DR. STEPHEN J. KAHN M.D. (NPI 1790778728) is an individual diagnostic radiology provider in Oakland, California, licensed in California (G62715) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and is a graduate of Emory University School Of Medicine (1986).

NPPES Registry Identity

NPI1790778728

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. STEPHEN J. KAHNCredential: M.D.

Location Address411 30TH ST, #508Oakland, CA 94609-3310

Mailing Address411 30th St, #508Oakland, CA 94609-3310 · (925) 274-4950 · Fax (925) 274-4975

Phone(925) 274-4950

Fax(925) 274-4975

Sole ProprietorNo

Medical School CMSEmory University School Of MedicineGraduated 1986

Enumeration DateAugust 24, 2005

Last NPPES UpdateDecember 22, 2010

✔ NPI 1790778728 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 · G62715

Definition

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

411 30TH ST, Oakland, CA 94609

Open in Google Maps ↗

Other Identifiers 5

Medicare PIN00G627152CA

Medicare PIN00G627153CA

Medicare PIN00G627150

Medicare PINAM995ZCA

Medicare UPINF09855

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Stephen J. Kahn M.d. 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 ID6002713062

PECOS Enrollment IDI20031217000600

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 Stephen Kahn reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adventist Health Physicians Network

9.3 mi

Orthopaedic Surgery

3727 BUCHANAN ST, SUITE. 310
San Francisco, CA 94123

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

NPI 1174820344 (707) 968-0670

John Muir Trauma Physicians Billing Service

14 mi

Hospitalist

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

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

NPI 1093864837 (925) 947-5331

Silicon Valley Diagnostic Imaging, Inc.

32 mi

Radiology

2500 GRANT RD
Mountain View, CA 94040

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

NPI 1629265806 (650) 940-7000

El Camino Health Medical Network, LLC

39 mi

Multi-Specialty

828 S WINCHESTER BLVD
San Jose, CA 95128

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

NPI 1164880761 (408) 871-3400

Lodi Memorial Hospital Association, Inc

51 mi

Primary Care

10200 TRINITY PARKWAY, SUITE 102
Stockton, CA 95219

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

NPI 1982860995 (209) 948-0808

County Of San Joaquin

54 mi

General Acute Care Hospital

500 W. HOSPITAL RD.
French Camp, CA 95231

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

NPI 1801830583 (209) 468-6937

San Joaquin Faculty Medical Group

54 mi

Internal Medicine

500 HOSPITAL RD
French Camp, CA 95231

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

NPI 1225063761 (209) 473-6555

Central Valley Imaging Medical Associates, Inc

57 mi

Diagnostic Radiology

250 CHERRY LN STE 116
Manteca, CA 95337

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

NPI 1275523169 (209) 647-2184

Jason L Hwang MD Inc

104 mi

Diagnostic Radiology

1000 GREENLEY RD
Sonora, CA 95370

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

NPI 1811486616 (209) 532-5000

Golden State Imaging Associates Inc

1,638 mi

Diagnostic Radiology

1401 ST JOSEPH PKWY
Houston, TX 77002

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

NPI 1144872052 (888) 371-0667

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 48

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.

672 services557 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.

160 services154 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.

101 services97 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.

89 services62 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.

59 services57 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.

52 services52 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.

51 services42 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.

50 services50 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.

49 services49 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.

49 services43 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.

43 services41 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.

42 services34 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.

40 services40 patients

X-ray of foot, minimum of 3 views 73630

32 services27 patients

X-ray of chest, 2 views 71046

31 services31 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.

31 services30 patients

X-ray of shoulder, minimum of 2 views 73030

31 services27 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.

30 services30 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.

28 services22 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.

27 services26 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.

25 services21 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.

21 services21 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.

20 services20 patients

X-ray of hip, 2-3 views 73502

20 services20 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.

18 services18 patients

X-ray of hand, minimum of 3 views 73130

18 services17 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.

18 services16 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.

17 services17 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.

16 services16 patients

X-ray of knee, 4 or more views 73564

16 services13 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.

15 services15 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.

14 services14 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.

14 services14 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.

14 services13 patients

X-ray of ankle, minimum of 3 views 73610

14 services14 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.

14 services14 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.

13 services11 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.

13 services13 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.

13 services13 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.

13 services13 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.

13 services13 patients

X-ray of knee, 3 views 73562

13 services11 patients

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

12 services12 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.

12 services12 patients

X-ray of wrist, minimum of 3 views 73110

12 services12 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.

11 services11 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.

11 services11 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94609 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.

66.24/100

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

Scored as part of a group practice

Quality

Improvement Activities

Cost

49.06

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.

MICHELE MABRY WILSON

Counselor

411 30TH ST, #314
OAKLAND, CA 94609

Alameda County (510) 273-4200

DR. KATHRYN A KLIMA MD

Radiology (Diagnostic Radiology)

411 30TH ST, #508
OAKLAND, CA 94609

Alameda County (925) 274-4950

MOHAMED BERETEH

Counselor

411 30TH ST, SUITE 314
OAKLAND, CA 94609

Alameda County (510) 273-8340

DR. CHARLES E. FISKE M.D.

Radiology (Radiation Oncology)

411 30TH ST, #508
OAKLAND, CA 94609

Alameda County (925) 274-4950

AFFILIATES IN IMAGING, A MEDICAL GROUP INC

Radiology (Diagnostic Radiology)

411 30TH ST, #508
OAKLAND, CA 94609

Alameda County (925) 274-4950

DR. PATRICK J PERKINS MD

Radiology (Diagnostic Radiology)

411 30TH ST, #508
OAKLAND, CA 94609

Alameda County (925) 274-4950

DYNAMEDIC DRUGS INC

Durable Medical Equipment & Medical Supplies

411 30TH ST
OAKLAND, CA 94609

Alameda County (510) 834-3100

KRISTINA M. KURY M.D.

Internal Medicine (Pulmonary Disease)

411 30TH ST, SUITE 314
OAKLAND, CA 94609

Alameda County (510) 465-6800

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 Stephen Kahn's NPI number?

The NPI number for Stephen Kahn is 1790778728. It was assigned to this individual provider in the NPPES registry on August 24, 2005.

Where is Stephen Kahn located?

Stephen Kahn practices at 411 30th St #508, Oakland, CA 94609. The listed phone number is (925) 274-4950.

What is Stephen Kahn's specialty?

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

Is Stephen Kahn enrolled in Medicare?

Yes. Stephen Kahn 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.

Which organizations bill Medicare for Stephen Kahn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Kahn reassigns Medicare benefits to 10 organizations: Adventist Health Physicians Network (San Francisco, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA), Silicon Valley Diagnostic Imaging, Inc. (Mountain View, CA), El Camino Health Medical Network, LLC (San Jose, CA), Lodi Memorial Hospital Association, Inc (Stockton, CA) and 5 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 Stephen Kahn'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 Stephen Kahn was last updated on December 22, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.