Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael P Hirsh, M.D.

Pediatric Surgery Physician in Worcester, MA · enumerated 2005.

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

National Provider Identifier

1861475980

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael P Hirsh

Credential M.D.

Sex Male

Practice address 55 Lake Ave N, Department of Pediatric Surgery, Worcester, MA, 01655

Phone (508) 856-2128

Fax (508) 856-2043

Enumeration date Nov 22, 2005

Last updated in NPPES Nov 4, 2020

Taxonomy & licenses

2086S0120X Pediatric Surgery Physician Allopathic & Osteopathic Physicians · License 56829 (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
110043292A	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.

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Frequently asked questions

What specialty is Michael Hirsh?

Michael Hirsh is registered in NPPES with the primary taxonomy of Pediatric 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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James Liebmann Medical Oncology Physician · Worcester, MA NPI 1477556587 Daniel Han Radiation Oncology Physician · Worcester, MA NPI 1831192301 Frances Lagana Podiatrist · Worcester, MA NPI 1750385514 Seth Arum Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1679578793 Yong Zhao Blood Banking & Transfusion Medicine Physician · Worcester, MA NPI 1366448813 Donna Russell Certified Registered Nurse Anesthetist · Worcester, MA NPI 1689672347 Bruce Simon Surgical Critical Care Physician · Worcester, MA NPI 1164420634 Richard Haas Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1023017373

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-04.