Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Allen Frederick Namath Gromme, MD

Critical Care Medicine (Internal Medicine) Physician in Los Altos, CA · enumerated 2007.

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

National Provider Identifier

1275653586

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Registry record

Entity type Individual (Type 1)

Name Allen Frederick Namath Gromme

Credential MD

Sex Male

Practice address Los Altos, CA, 94022

Phone (650) 713-0700

Fax (650) 713-0703

Enumeration date Mar 30, 2007

Last updated in NPPES Apr 16, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License A80406 (CA) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A80406 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A80406 (CA) Secondary

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

How do I verify Allen Namath Gromme's NPI record?

Cross-check NPI 1275653586 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1275653586 active?

Yes, as of the latest NPPES snapshot, NPI 1275653586 is active (record last updated 2024-04-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-16.