DR. WILLIAM THOMAS GRIBBIN MD
NPI 1932840931
Student in an Organized Health Care Education/Training Program in Ann Arbor, MI

Q: What is William Gribbin's NPI number?

The NPI number for William Gribbin is 1932840931. It was assigned to this individual provider in the NPPES registry on April 5, 2022.

Q: What is William Gribbin's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Q: When was this NPI record last updated?

The NPPES record for William Gribbin was last updated on May 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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 April 05, 2022PECOS Enrolled

1500 E MEDICAL CENTER DR, ANN ARBOR, MI 48109(734) 936-4000 Get Directions Write a Review

NPPES record last updated: May 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 14, 2026, Apr 5, 2022 (2 updates tracked since 2022).

On this page

About Dr. William Thomas Gribbin Md NPPES

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

DR. WILLIAM THOMAS GRIBBIN MD (NPI 1932840931) is an individual student in an organized health care education/training program in Ann Arbor, Michigan and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS and maintains a secondary practice location in Ann Arbor.

NPPES Registry Identity

NPI1932840931

Entity TypeIndividualMale

Primary Taxonomy390200000X

Provider Legal NameDR. WILLIAM THOMAS GRIBBINCredential: MD

Location Address1500 E MEDICAL CENTER DRAnn Arbor, MI 48109-5000

Mailing Address635 Barnhill Dr Bldg 116Indianapolis, IN 46202-5126

Phone(734) 936-4000

Sole ProprietorNo

Enumeration DateApril 5, 2022

Last NPPES UpdateMay 14, 20262 updates tracked since enumeration

NPPES CertifiedMay 14, 2026

✔ NPI 1932840931 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care

Taxonomy Code390200000X

Definition

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109

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Secondary Practice Location 1

Location 12215 Fuller RdAnn Arbor, MI 48105-2303 · Phone (734) 769-7100

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Thomas Gribbin Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

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.

LOKMAN SUNG MD

Pathology (Forensic Pathology)

1500 E MEDICAL CENTER DR, 2ND FLOOR UNIVERSITY HOSPITAL RECP PATHOLOGY
ANN ARBOR, MI 48109

Washtenaw County (800) 862-7284

SAMEER DEV SAINI M.D.

Internal Medicine (Gastroenterology)

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-4000

KYLE DAVID PERRY MD

Pathology (Cytopathology)

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-4000

DR. DAVID ALEXANDER STEWART M.D.

Pediatrics

1500 E MEDICAL CENTER DR, 12TH FLOOR C.S. MOTT CHILDREN'S HOSPITAL ROOM 525
ANN ARBOR, MI 48109

Washtenaw County (734) 763-5302

DR. MICHAEL EDMUND WATSON MD

Pediatrics (Pediatric Infectious Diseases)

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-4000

CARRIE KRAEGER PORTER PA-C

Physician Assistant

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-6666

DENISE LYNN BERRY CRNA

Nurse Anesthetist, Certified Registered

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-4000

KETTI SOPHIA PETERSEN MD

Family Medicine (Hospice and Palliative Medicine)

1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

Washtenaw County (734) 936-4000

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 William Gribbin's NPI number?

The NPI number for William Gribbin is 1932840931. It was assigned to this individual provider in the NPPES registry on April 5, 2022.

Where is William Gribbin located?

William Gribbin practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.

What is William Gribbin's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is William Gribbin enrolled in Medicare?

Yes. William Gribbin is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Gribbin was last updated on May 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.