Doctor profile · Federal record

Dr. Tammy Darby, PA-C

Physician Assistant · Pomona, CA

  • NPI 1265828370
  • Accepts Medicare
  • 12 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2740 N Garey Ave Ste 100
Pomona, CA 917671800
(909) 623-2300
fax (909) 469-2472

Credentials & registration

NPPES · NUCC
NPI registered
April 2015 — 11 yrs on file
Profile last updated
November 9, 2022
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
California #52376

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1265828370. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$39
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Cranial Technologies, Inc 1 $19.78
Merck Sharp & Dohme LLC 1 $18.81

By nature of payment

Food and Beverage
$39

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
899
Patients
272
Total drug cost
$16,410
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 153 50 $2,999
Losartan Potassium Generic 105 36 $1,524
Metformin Hcl Generic 98 34 $1,514
Amlodipine Besylate Generic 71 22 $1,038
Alendronate Sodium Generic 61 18 $1,112
Simvastatin Generic 57 19 $695
Hydrochlorothiazide Generic 55 18 $272
Levothyroxine Sodium Generic 51 16 $1,017
Omeprazole Generic 50 25 $977
Metoprolol Succinate Generic 42 0 $856

Frequently asked questions

Auto-generated from federal data
What is Dr. Tammy Darby's medical specialty?
Dr. Tammy Darby practices Physician Assistant in Pomona, CA.
Where does Dr. Tammy Darby practice?
Dr. Tammy Darby practices at 2740 N Garey Ave Ste 100, Pomona, CA 917671800. Office phone: 9096232300.
What is Dr. Tammy Darby's NPI?
Dr. Tammy Darby's National Provider Identifier (NPI) is 1265828370, issued by NPPES.
Does Dr. Tammy Darby accept Medicare assignment?
Yes. Dr. Tammy Darby accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.