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

Dr. John S Miller, PH.D.

Clinical Psychologist in Davis, CA · enumerated 2005.

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

National Provider Identifier

1003819566

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Registry record

Entity type Individual (Type 1)

Name Dr. John S Miller

Credential PH.D.

Sex Male

Practice address Davis, CA, 95616

Phone (530) 758-1580

Fax (530) 758-9869

Enumeration date May 27, 2005

Last updated in NPPES May 4, 2015

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY14926 (CA) Primary

103TF0200X Forensic Psychologist Behavioral Health & Social Service Providers · License PSY14926 (CA) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

What specialty is John Miller?

John Miller is registered in NPPES with the primary taxonomy of Clinical Psychologist. 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.

Other providers at this practice address

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Stewart E Teal Eva Peters Hunting & Jerry L Plummer Ptr Group Psychotherapy Psychologist · Davis, CA NPI 1295738755 Jerry Plummer Clinical Social Worker · Davis, CA NPI 1467455923 Behavioral Health Family Counseling & Educational Consulting, PC Marriage & Family Therapist · Davis, CA NPI 1952331134 Wendy Davis Clinical Psychologist · Davis, CA NPI 1700811536 Hal Linebarger Clinical Psychologist · Davis, CA NPI 1386654325 Grace Chen Marriage & Family Therapist · Davis, CA NPI 1891807319 David Hartz Chiropractor · Davis, CA NPI 1154470219 Cynthia Yang Clinical Social Worker · Davis, CA NPI 1689726796

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-04.