Doctor profile · Federal record

Dr. Thomas Okamoto, M.D.

Psychiatry Physician · Santa Ana, CA

  • NPI 1235178021
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2130 E 4Th St, Suite 107
Santa Ana, CA 927053818
(714) 558-2460
fax (714) 972-0275

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
June 30, 2009
Specialty taxonomy
2084P0800X — NUCC code
State license (1)
California #G48164

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235178021. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,805
Transactions
97
Manufacturers
11
Payer (manufacturer) Industry Txns Amount
Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) 27 $528.07
Bausch Health US, LLC 39 $417.65
Teva Pharmaceuticals USA, INC. 3 $246.38
Abbvie INC. 10 $200.06
Otsuka America Pharmaceutical, INC. 6 $112.46
Vanda Pharmaceuticals INC. 3 $80.71
Idorsia Pharmaceuticals US INC 3 $57.69
Takeda Pharmaceuticals U.S.A., INC. 2 $55.82
Neurocrine Biosciences, INC. 2 $50.38
Axsome Therapeutics, INC. 1 $32.52
Lundbeck LLC 1 $22.88

By nature of payment

Food and Beverage
$1,791
Education
$13

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,501
Patients
279
Total drug cost
$94,615
Drug Type Claims Patients Total cost
Lamotrigine Generic 257 54 $3,501
Quetiapine Fumarate Generic 197 38 $2,640
Bupropion Xl (Bupropion Hcl) Brand 133 25 $7,496
Duloxetine Hcl Generic 104 14 $2,791
Belsomra (Suvorexant) Brand 100 15 $50,892
Trazodone Hcl Generic 95 27 $2,388
Desvenlafaxine Succinate ER (Desvenlafaxine Succinate) Brand 77 11 $5,035
Fluoxetine Hcl Generic 77 15 $911
Alprazolam Generic 75 27 $615
Risperidone Generic 71 17 $1,146

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Okamoto's medical specialty?
Dr. Thomas Okamoto practices Psychiatry Physician in Santa Ana, CA.
Where does Dr. Thomas Okamoto practice?
Dr. Thomas Okamoto practices at 2130 E 4Th St, Santa Ana, CA 927053818. Office phone: 7145582460.
What is Dr. Thomas Okamoto's NPI?
Dr. Thomas Okamoto's National Provider Identifier (NPI) is 1235178021, issued by NPPES.