NPI Portal NPI Lookup & Verification

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

Hasan Duymazlar, D.O.

Emergency Medicine Physician in Wolfeboro, NH · enumerated 2006 · practices at Huggins Hospital.

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

National Provider Identifier

1902876659

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Registry record

Entity type Individual (Type 1)
Name Hasan Duymazlar
Credential D.O.
Sex Male
Practice address Wolfeboro, NH, 03894
Phone (603) 569-7500
Fax (603) 569-7509
Enumeration date Jan 25, 2006
Last updated in NPPES Apr 6, 2012

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 11269 (NH) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 11269 (NH) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
3412808 Other NH AETNA
30221389 Medicaid NH -
8136845 Other NH CIGNA
04YP03190NH01 Other NH ANTHEM
383806 Other NH MVP
NH2281 Other NH HARVARD PILGRIM HLTHCARE

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

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.
What specialty is Hasan Duymazlar?
Hasan Duymazlar is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-06.