Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Zachary L Gitlin, MD

Internal Medicine Physician in Oak Bluffs, MA · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1003203753

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Registry record

Entity type Individual (Type 1)

Name Zachary L Gitlin

Credential MD

Sex Male

Practice address 1 Hospital Rd, Oak Bluffs, MA, 02557

Phone (508) 684-4500

Fax (508) 684-4502

Enumeration date Apr 21, 2015

Last updated in NPPES Jun 16, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 291014 (MA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 042. (VT) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 291014 (MA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Zachary Gitlin practice?

The practice location on file with NPPES is in Oak Bluffs, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Zachary Gitlin?

The National Provider Identifier (NPI) for Zachary Gitlin is 1003203753, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-16.