Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Josef B Simon, MD

Orthopaedic Surgery of the Spine Physician in Cambridge, MA · enumerated 2007.

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

National Provider Identifier

1366638710

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Registry record

Entity type Individual (Type 1)

Name Josef B Simon

Credential MD

Sex Male

Practice address 300 Mount Auburn St, Suite 505, Cambridge, MA, 02138

Phone (617) 491-6766

Fax (617) 491-2552

Enumeration date Sep 19, 2007

Last updated in NPPES Aug 7, 2019

Taxonomy & licenses

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License 233987 (MA) Primary

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

What specialty is Josef Simon?

Josef Simon is registered in NPPES with the primary taxonomy of Orthopaedic Surgery of the Spine 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 2019-08-07.