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F. Rene Van Carr,M.D. & Marion R Kramer,M.D. Inc

Specialist in Hayward, CA · enumerated 2007 · authorized official Marion Kramer, Owner.

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

National Provider Identifier

1689701526

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Registry record

Entity type Organization (Type 2)
Legal business name F. Rene Van Carr,M.D. & Marion R Kramer,M.D. Inc
Practice address 27225 Calaroga Ave, Hayward, CA, 94545
Phone (510) 783-0783
Fax (510) 786-3792
Enumeration date Feb 27, 2007
Last updated in NPPES Feb 17, 2009

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Marion Kramer
Title Owner
Phone (510) 783-0783

Other identifiers

Identifier Type State Issuer
ZZZ79042Z 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

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is F. Rene Van Carr,M.D. & Marion R Kramer,M.D. Inc?
F. Rene Van Carr,M.D. & Marion R Kramer,M.D. Inc is registered in NPPES as a Specialist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-17.