Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mallory C Hatfield, MD

Cardiovascular Disease Physician in Hyannis, MA · enumerated 2006.

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

National Provider Identifier

1790737013

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Registry record

Entity type Individual (Type 1)

Name Mallory C Hatfield

Credential MD

Sex Female

Practice address 46 North St, Suite 6, Hyannis, MA, 02601

Phone (508) 778-4888

Fax (508) 778-4887

Enumeration date May 16, 2006

Last updated in NPPES Aug 18, 2014

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 82138 (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
2272937	Other	MA	AETNA
2500635	Other	MA	UNITED HEALTH CARE
792597	Other	MA	TUFTS HEALTH PLAN
0664672	Other	MA	CIGNA
J19435	Other	MA	BLUE SHIELD
060050660	Other	MA	RR MEDICARE
300398	Other	MA	HARVARD PILGRIM HEALTH
3143945	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

Is NPI 1790737013 active?

Yes, as of the latest NPPES snapshot, NPI 1790737013 is active (record last updated 2014-08-18).

How do I verify Mallory Hatfield's NPI record?

Cross-check NPI 1790737013 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-18.