Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. THOMAS BOTTYAN
NPI 1326579475
Psychiatry & Neurology - Psychiatry in Mather, CA

Q: What is Thomas Bottyan's NPI number?

The NPI number for Thomas Bottyan is 1326579475. It was assigned to this individual provider in the NPPES registry on March 21, 2017.

Q: What is Thomas Bottyan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Bottyan was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 21, 2017

10535 HOSPITAL WAY, MATHER, CA 95655(916) 843-7000 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 21, 2026, Apr 21, 2022, Mar 21, 2017 (3 updates tracked since 2017).

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About Dr. Thomas Bottyan NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. THOMAS BOTTYAN (NPI 1326579475) is an individual psychiatry provider in Mather, California, licensed in California (A160069) and active in the NPI registry since March 2017.

NPPES Registry Identity

NPI1326579475

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. THOMAS BOTTYAN

Location Address10535 HOSPITAL WAYMather, CA 95655-4200

Mailing Address10535 Hospital WayMather, CA 95655-4200 · (916) 843-7000

Phone(916) 843-7000

Sole ProprietorNo

Enumeration DateMarch 21, 2017

Last NPPES UpdateSeptember 21, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 21, 2026

✔ NPI 1326579475 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · A160069

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedPsychiatry & Neurology · Addiction MedicineTaxonomy 2084A0401X · License A160069 (CA)

10535 HOSPITAL WAY, Mather, CA 95655

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALAYNA HUYNH NGUYEN

Pharmacist

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-7000

MS. JANE CHAN RPH

Pharmacist

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 366-5321

DR. PATRICIA L. DALTON M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

10535 HOSPITAL WAY, DEPT. OF VA SACRAMENTO MEDICAL CENTER
MATHER, CA 95655

Sacramento County (916) 843-7000

DR. NICHOLAS RANDALL MORRIS M.D.

Psychiatry & Neurology (Psychiatry)

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-7000

SHIN SHAN CHO

Dietitian, Registered

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-9022

BRENDA JACKSON LMFT

Marriage & Family Therapist

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-2918

JEFFREY JON METER MD

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-7324

DR. DAVID SIEGEL M.D.

Internal Medicine

10535 HOSPITAL WAY
MATHER, CA 95655

Sacramento County (916) 843-7096

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Bottyan's NPI number?

The NPI number for Thomas Bottyan is 1326579475. It was assigned to this individual provider in the NPPES registry on March 21, 2017.

Where is Thomas Bottyan located?

Thomas Bottyan practices at 10535 Hospital Way, Mather, CA 95655. The listed phone number is (916) 843-7000.

What is Thomas Bottyan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Thomas Bottyan was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.