Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Porway, MD

Q: What is the NPI number for Mark Porway?

The National Provider Identifier (NPI) for Mark Porway is 1992765036, a Type 1 (individual) record in the CMS NPPES registry.

Cardiovascular Disease Physician in Northampton, MA · enumerated 2006.

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

National Provider Identifier

1992765036

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Registry record

Entity type Individual (Type 1)

Name Mark Porway

Credential MD

Sex Male

Practice address 22 Atwood Dr, Suite 301, Northampton, MA, 01060

Phone (413) 570-4900

Fax (413) 570-4196

Enumeration date Mar 24, 2006

Last updated in NPPES Apr 15, 2015

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 58063 (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
04-3476949	Other	MA	UNICARE/GIC
04-3476949	Other	MA	CONSOLIDATED
04-3476949	Other	MA	NORTH AMERICAN PREFERRED
04-3476949	Other	MA	NORTHEAST HEALTH DIRECT
04-3476949	Other	MA	PLAN VISTA
110044797A	Medicaid	MA	-
04-3476949	Other	MA	HEALTH NEW ENGLAND
J06661	Other	MA	BCBSMA
04-3476949	Other	MA	NORTHEAST HEALTHCARE ALLI
15514	Other	MA	HEALTH NEW ENGLAND
3025365	Medicaid	MA	-
04-3476949	Other	MA	PHCS
058063	Other	MA	TUFTS

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

What is the NPI number for Mark Porway?

The National Provider Identifier (NPI) for Mark Porway is 1992765036, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Porway practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-15.