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Jonathan H Marsh, MD

Hematology & Oncology Physician in Palmer, MA · enumerated 2005.

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

National Provider Identifier

1225031354

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Registry record

Entity type Individual (Type 1)
Name Jonathan H Marsh
Credential MD
Sex Male
Practice address 40 Wright St, Palmer, MA, 01069
Phone (413) 284-5400
Fax (413) 284-5559
Enumeration date May 23, 2005
Last updated in NPPES Nov 28, 2016

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 261665 (MA) Primary
207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 261665 (MA) Secondary
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.

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Frequently asked questions

What is the NPI number for Jonathan Marsh?
The National Provider Identifier (NPI) for Jonathan Marsh is 1225031354, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jonathan Marsh practice?
The practice location on file with NPPES is in Palmer, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-28.