Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. TUAN GREGORY NGUYEN M.D.
NPI 1477660983
Radiology - Diagnostic Radiology in San Francisco, CA

Q: What is Tuan Nguyen's NPI number?

The NPI number for Tuan Nguyen is 1477660983. It was assigned to this individual provider in the NPPES registry on August 23, 2006.

Q: What is Tuan Nguyen'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 Tuan Nguyen was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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 23, 2006PECOS EnrolledAccepts Medicare Assignment

505 PARNASSUS AVE FL 3, SAN FRANCISCO, CA 94143(415) 353-2887 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Tuan Gregory Nguyen M.d. NPPES

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

DR. TUAN GREGORY NGUYEN M.D. (NPI 1477660983) is an individual diagnostic radiology provider in San Francisco, California, licensed in California (A62809) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Chester County Hospital, and maintains a secondary practice location in Ardmore.

NPPES Registry Identity

NPI1477660983

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. TUAN GREGORY NGUYENCredential: M.D.

Location Address505 PARNASSUS AVE FL 3San Francisco, CA 94143-2204

Mailing Address22 Llanfair Rd Unit 6Ardmore, PA 19003-2320 · (712) 363-9064

Phone(415) 353-2887

Sole ProprietorYes

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1988

Enumeration DateAugust 23, 2006

Last NPPES UpdateOctober 15, 2026

NPPES CertifiedOctober 15, 2026

✔ NPI 1477660983 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in CA · A62809✔ Licensed in FL · TPME4570✔ Licensed in TX · H6472

Definition

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

505 PARNASSUS AVE FL 3, San Francisco, CA 94143

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Secondary Practice Location 1

Location 122 Llanfair Rd Unit 6Ardmore, PA 19003-2320 · Phone (712) 363-9064

Other Identifiers 2

OtherH6472TX · License

OtherTPME4570FL · License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare, Cigna HealthCare of Florida, Inc. and more.Insurance ›

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. Tuan Gregory Nguyen 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 ID3375526593

PECOS Enrollment IDI20230505001557, I20240223001875

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 Tuan Nguyen reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Vesta Telemedicine Solutions, PLLC

343 mi

Diagnostic Radiology

601 CARUSO AVE
Glendale, CA 91210

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

NPI 1952902116 (407) 738-4085

Kc Tan, M.D. Medical Corporation

352 mi

Neuroradiology

525 N GARFIELD AVE
Monterey Park, CA 91754

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Kc Tan MD Medical Corporation
74 clinicians in this Medicare group

NPI 1215394036 (626) 522-6030

Northwest Iowa Hospital Corporation

1,412 mi

Emergency Medical Services

2720 STONE PARK BLVD
Sioux City, IA 51104

Reassigned Medicare billing, Iowa enrollment
281 clinicians in this Medicare group

NPI 1215962550 (712) 279-3789

Hospital Specialist Solutions, LLC

1,612 mi

Diagnostic Radiology

7101 S PADRE ISLAND DR
Corpus Christi, TX 78412

Reassigned Medicare billing, Iowa and Texas enrollments

NPI 1982595856 (866) 775-5053

Golden State Imaging Associates Inc

1,648 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

Mercy Health Physicians Kentucky Specialty Care LLC

1,851 mi

Surgery

1530 LONE OAK RD
Paducah, KY 42003

Reassigned Medicare billing, Kentucky enrollment
283 clinicians in this Medicare group

NPI 1700408093 (888) 696-3541

Monroe Medical Foundation, Inc.

2,015 mi

Family Medicine

604 N MAIN ST
Tompkinsville, KY 42167

Reassigned Medicare billing, Kentucky enrollment
42 clinicians in this Medicare group

NPI 1083854434 (270) 487-9231

Santa Rosa Hb Medical Services LLC

2,097 mi

Diagnostic Radiology

151 E REDSTONE AVE
Crestview, FL 32539

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

NPI 1730969502 (877) 892-9815

Mori Bean And Brooks Inc

2,401 mi

Diagnostic Radiology

1 TAMPA GENERAL CIR
Tampa, FL 33606

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

NPI 1093782070 (904) 236-5884

University Of Penn-Medical Group

2,508 mi

Surgery

1001 CHESTERBROOK BLVD, 3RD FLOOR
Berwyn, PA 19312

Reassigned Medicare billing, Pennsylvania enrollment
3,488 clinicians in this Medicare group

NPI 1396133559 (610) 576-7500

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 22

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.

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.

304 services279 patients

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.

223 services192 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.

191 services189 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.

128 services125 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.

88 services87 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.

85 services84 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.

79 services78 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.

56 services55 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.

48 services46 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.

45 services45 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.

23 services22 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.

23 services23 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.

22 services21 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.

20 services20 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.

19 services19 patients

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

18 services18 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.

17 services15 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.

16 services16 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.

16 services16 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.

15 services13 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.

15 services15 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Chester County Hospital

Acute Care Hospitals · West Chester, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390179

Location701 East Marshall StreetWest Chester, PA 19380 · Chester County

Emergency services Birthing friendly

Pennsylvania Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390226

Location800 Spruce StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Abington Memorial Hospital

Acute Care Hospitals · Abington, PA

2/5 CMS rating

OwnershipProprietary

CMS Certification Number390231

Location1200 Old York RoadAbington, PA 19001 · Montgomery County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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.

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.

ROXANNA JUAREZ

Radiology (Nuclear Radiology)