Doctor profile · Federal record

Dr. Michael Choi, MD

Urology Physician (CMS: Urology) · Walnut Creek, CA

  • NPI 1215015797
  • Accepts Medicare
  • 27 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1425 S Main St
Walnut Creek, CA 945965318
(925) 295-4000
Mailing address
1800 Harrison St Fl 7
Oakland, CA 946123466

Credentials & registration

NPPES · NUCC
NPI registered
November 2006 — 20 yrs on file
Profile last updated
December 13, 2021
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
208800000X — NUCC code
State license (1)
California #A87594

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1215015797. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$833
Transactions
4
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Intuitive Surgical, INC. 3 $763.55
Cook Medical LLC 1 $69.87

By nature of payment

Food and Beverage
$825
Gift
$9

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
316
Patients
174
Total drug cost
$4,709
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 95 38 $1,500
Finasteride Generic 67 31 $906
Trospium Chloride Generic 28 17 $768
Ciprofloxacin Hcl Generic 26 22 $161
Ibuprofen Generic 22 22 $169
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 18 17 $124
Oxycodone Hcl Generic 16 15 $103
Amoxicillin Generic 15 12 $154
Tadalafil Generic 15 0 $203
Terazosin Hcl Generic 14 0 $621

Frequently asked questions

Auto-generated from federal data
What is Dr. Michael Choi's medical specialty?
Dr. Michael Choi practices Urology Physician in Walnut Creek, CA.
Where does Dr. Michael Choi practice?
Dr. Michael Choi practices at 1425 S Main St, Walnut Creek, CA 945965318. Office phone: 9252954000.
What is Dr. Michael Choi's NPI?
Dr. Michael Choi's National Provider Identifier (NPI) is 1215015797, issued by NPPES.
Does Dr. Michael Choi accept Medicare assignment?
Yes. Dr. Michael Choi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.