Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel P. Gaposchkin, M.D/PH.D.

Internal Medicine Physician in Waltham, MA · enumerated 2006.

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

National Provider Identifier

1821194879

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel P. Gaposchkin

Credential M.D/PH.D.

Sex Male

Practice address 40 Second Ave, Suite #400, Waltham, MA, 02154

Phone (781) 487-4350

Enumeration date Sep 16, 2006

Last updated in NPPES Nov 7, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 222235 (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
2081245	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Daniel Gaposchkin practice?

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

What is the NPI number for Daniel Gaposchkin?

The National Provider Identifier (NPI) for Daniel Gaposchkin is 1821194879, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-07.