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Gerald John Riffelmacher, M.D.

Internal Medicine Physician in Medford, MA · enumerated 2005.

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

National Provider Identifier

1457351900

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Registry record

Entity type Individual (Type 1)
Name Gerald John Riffelmacher
Credential M.D.
Sex Male
Practice address 101 Main St, Suite 202, Medford, MA, 02155
Phone (781) 395-7638
Fax (781) 395-2915
Enumeration date Jul 27, 2005
Last updated in NPPES May 2, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 43699 (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
2066602 Medicaid MA -
3357 Other MA HARVARD PILGRIM HEALTHCAR
701485 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

What is the NPI number for Gerald Riffelmacher?
The National Provider Identifier (NPI) for Gerald Riffelmacher is 1457351900, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gerald Riffelmacher practice?
The practice location on file with NPPES is in Medford, 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 2012-05-02.