Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marina M Roytman, M.D.

Hepatology Physician in Fresno, CA · enumerated 2006.

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

National Provider Identifier

1770521452

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Registry record

Entity type Individual (Type 1)

Name Dr. Marina M Roytman

Credential M.D.

Sex Female

Practice address 2335 E Kashian Ln Ste 280, Fresno, CA, 93701

Phone (559) 320-1090

Fax (559) 320-0331

Enumeration date Jun 3, 2006

Last updated in NPPES Nov 1, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C148700 (CA) Secondary

207RI0008X Hepatology Physician Allopathic & Osteopathic Physicians · License C148700 (CA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Marina Roytman?

Marina Roytman is registered in NPPES with the primary taxonomy of Hepatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-01.