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Curtis L. Mark, MD

Internal Medicine Physician in Milpitas, CA · enumerated 2006 · practices at Kaiser Foundation Health Plan Inc.

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

National Provider Identifier

1205912136

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Registry record

Entity type Individual (Type 1)
Name Curtis L. Mark
Credential MD
Sex Male
Practice address 770 E Calaveras Blvd, Milpitas, CA, 95035
Phone (650) 945-2900
Enumeration date Oct 31, 2006
Last updated in NPPES Nov 30, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G64628 (CA) 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
00G646280 Medicaid CA -

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

How do I verify Curtis Mark's NPI record?
Cross-check NPI 1205912136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1205912136 active?
Yes, as of the latest NPPES snapshot, NPI 1205912136 is active (record last updated 2021-11-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-30.