Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Matthew Koomey, M.D.

Medical Oncology Physician in Plymouth, MA · enumerated 2006.

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

National Provider Identifier

1477531358

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Registry record

Entity type Individual (Type 1)

Name Dr. James Matthew Koomey

Credential M.D.

Sex Male

Practice address 275 Sandwich St, C/O Cathy Grey, Plymouth, MA, 02360

Phone (508) 830-2390

Fax (508) 830-2399

Enumeration date Jan 3, 2006

Last updated in NPPES Nov 28, 2007

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 155230 (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
3178391	Medicaid	MA	-
J19174	Other	MA	BCBSMA
14734	Other	MA	HARVARD PILGRIM
779429	Other	MA	TUFTS HEALTH PLAN

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

How do I verify James Koomey's NPI record?

Cross-check NPI 1477531358 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477531358 active?

Yes, as of the latest NPPES snapshot, NPI 1477531358 is active (record last updated 2007-11-28).

Other providers at this practice address

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David Kelly Specialist · Plymouth, MA NPI 1184618910 Brian Fenn Certified Registered Nurse Anesthetist · Plymouth, MA NPI 1891779732 Jordan Physician Associates, Inc. Family Medicine Physician · Plymouth, MA NPI 1538145131 Radiology Associates of Plymouth Diagnostic Radiology Physician · Plymouth, MA NPI 1972580439 Harvey Kowaloff Internal Medicine Physician · Plymouth, MA NPI 1700863016 Irina Gurevich Hematology & Oncology Physician · Plymouth, MA NPI 1013995992 Dariusz Hordejuk Internal Medicine Physician · Plymouth, MA NPI 1902884331 Caroline Alpert Internal Medicine Physician · Plymouth, MA NPI 1831177260

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-28.