Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harry Ma, M.D./PHD

Q: What is the NPI number for Harry Ma?

The National Provider Identifier (NPI) for Harry Ma is 1174763957, a Type 1 (individual) record in the CMS NPPES registry.

Vascular Surgery Physician in New London, CT · enumerated 2009.

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

National Provider Identifier

1174763957

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Registry record

Entity type Individual (Type 1)

Name Harry Ma

Credential M.D./PHD

Sex Male

Practice address 2 Shaws Cv Ste 203, New London, CT, 06320

Phone (203) 375-2861

Fax (203) 375-5615

Enumeration date Mar 6, 2009

Last updated in NPPES Mar 10, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 55618 (CT) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 241896 (MA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 248565-1 (NY) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MD15597 (RI) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 55618 (CT) 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

Where does Harry Ma practice?

The practice location on file with NPPES is in New London, CT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Harry Ma?

The National Provider Identifier (NPI) for Harry Ma is 1174763957, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-10.