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Dr. Marvin M Chassin, MD

Medical Oncology Physician in Mesa, AZ · enumerated 2006.

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

National Provider Identifier

1669445441

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Registry record

Entity type Individual (Type 1)
Name Dr. Marvin M Chassin
Credential MD
Sex Male
Practice address 1432 S Dobson Rd, 106, Mesa, AZ, 85202
Phone (480) 969-3637
Fax (480) 969-6568
Enumeration date Feb 10, 2006
Last updated in NPPES Dec 31, 2013

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 10566 (AZ) 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
214255 Medicaid AZ -

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

Where does Marvin Chassin practice?
The practice location on file with NPPES is in Mesa, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marvin Chassin?
The National Provider Identifier (NPI) for Marvin Chassin is 1669445441, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-31.