Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Bertram Zarins, M.D.

Sports Medicine (Orthopaedic Surgery) Physician in Boston, MA · enumerated 2005.

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

National Provider Identifier

1003802026

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Registry record

Entity type Individual (Type 1)

Name Dr. Bertram Zarins

Credential M.D.

Sex Male

Practice address 175 Cambridge St, Suite 400, Boston, MA, 02114

Phone (617) 726-3421

Fax (617) 726-3438

Enumeration date Sep 26, 2005

Last updated in NPPES Jan 4, 2013

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 32891 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
2055783	Medicaid	MA	-

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

What specialty is Bertram Zarins?

Bertram Zarins is registered in NPPES with the primary taxonomy of Sports Medicine (Orthopaedic Surgery) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-04.