Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas A Billings, M.D.

Family Medicine Physician in Ukiah, CA · enumerated 2005.

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

National Provider Identifier

1326043852

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas A Billings

Credential M.D.

Sex Male

Practice address 1050 N State St, Ukiah, CA, 95482

Phone (707) 463-7495

Enumeration date Jun 21, 2005

Last updated in NPPES Apr 4, 2019

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 35050954B (OH) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License C159821 (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
0577559	Medicaid	OH	-
35050954B	Other	OH	OHIO LICENSE NUMBER
080169683	Other	OH	RAILROAD MEDICARE

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

What is the NPI number for Thomas Billings?

The National Provider Identifier (NPI) for Thomas Billings is 1326043852, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Billings practice?

The practice location on file with NPPES is in Ukiah, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Winston Eddy Obstetrics & Gynecology Physician · Ukiah, CA NPI 1497739338 Beverly Draudt Registered Nurse · Ukiah, CA NPI 1851460307 Ukiah Adventist Hospital Rural Health Clinic/Center · Ukiah, CA NPI 1770653362 Ida Leamon Family Nurse Practitioner · Ukiah, CA NPI 1114131471 Nancy Laybourn Physician Assistant · Ukiah, CA NPI 1669687182 Kathy Truelsen Obstetrics & Gynecology Nurse Practitioner · Ukiah, CA NPI 1538428420 Laurel Nicholson Mental Health Counselor · Ukiah, CA NPI 1144641010 Jodi Parungao Family Medicine Physician · Ukiah, CA NPI 1932528965

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-04.