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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Frederick Shirley, M.D.

Geriatric Medicine (Family Medicine) Physician in Rocklin, CA · enumerated 2006.

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

National Provider Identifier

1275560484

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Registry record

Entity type Individual (Type 1)
Name Dr. David Frederick Shirley
Credential M.D.
Sex Male
Practice address 3031 Stanford Ranch Rd, Suite 2, #220, Rocklin, CA, 95765
Phone (916) 677-7962
Fax (916) 435-2964
Enumeration date Jun 26, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License G66004 (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.

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Frequently asked questions

How do I verify David Shirley's NPI record?
Cross-check NPI 1275560484 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1275560484 active?
Yes, as of the latest NPPES snapshot, NPI 1275560484 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.