Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John G. Schuler, MD

Surgery Physician in Cambridge, MA · enumerated 2006.

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

National Provider Identifier

1881755536

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Registry record

Entity type Individual (Type 1)

Name John G. Schuler

Credential MD

Sex Male

Practice address 1611 Cambridge St, Cambridge, MA, 02138

Phone (617) 661-5525

Fax (617) 661-5202

Enumeration date Dec 13, 2006

Last updated in NPPES Oct 3, 2011

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 30735 (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
4393963-001	Other	MA	CIGNA
709402	Other	MA	TUFTS
S203	Other	MA	HPHC
0004722	Other	MA	NHP
2002965	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 John Schuler?

John Schuler is registered in NPPES with the primary taxonomy of 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 2011-10-03.