NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Michael James Petersen, M.D.

Vascular Surgery Physician in East Setauket, NY · enumerated 2005.

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

National Provider Identifier

1902899057

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Registry record

Entity type Individual (Type 1)
Name Michael James Petersen
Credential M.D.
Sex Male
Practice address East Setauket, NY, 11733
Phone (631) 246-8289
Fax (631) 246-8294
Enumeration date Aug 24, 2005
Last updated in NPPES Jun 6, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 175936 (NY) Secondary
2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 175936 (NY) 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
2C4298 Other NY HEALTHNET
0714028004 Other NY CIGNA HEALTHCARE
990015026 Other NY RR MEDICARE
S500051 Other NY SUFFOLK HEALTH PLANS
11347567803 Other NY 1199 BENEFIT FUND
2110430 Other NM AETNA HEALTH PLANS
CS1072 Other NY OXFORD HEALTH PLANS
1261940 Other NY UNITED HEALTHCARE
GHI PPO CBP Other NM 0103702

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

Where does Michael Petersen practice?
The practice location on file with NPPES is in East Setauket, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Petersen?
The National Provider Identifier (NPI) for Michael Petersen is 1902899057, 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 2016-06-06.