Doctor profile · Federal record

Dr. Stanley Leong, MD

Surgery Physician (CMS: General Surgery) · Surgical Oncology Physician · San Francisco, CA

  • NPI 1225092596
  • Accepts Medicare
  • 52 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2340 Clay Street, 2Nd Floor
San Francisco, CA 94115
(415) 600-3800
fax (415) 600-3865
Mailing address
325 Distel Cir
Los Altos, CA 940221408

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
April 16, 2020
Year of graduation
1974 — 52 yrs since
Specialty taxonomy
208600000X — NUCC code
State license (1)
California #C38735
Medicaid
CA #0C3873500

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1225092596. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
238
Distinct HCPCS
6
Medicare allowed
$46,512
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 135 90 $153
99204 New patient office or other outpatient visit, 45-59 minutes 36 36 $198
93702 Measurement of lymphedema extracellular fluid 21 18 $179
38900 Imaging of lymph nodes during surgery 19 19 $150
38525 Biopsy or removal of deep lymph nodes of underarm 16 16 $260
14000 Repair of wound of trunk by transferring skin, 10.0 sq cm or less 11 11 $720

In context: peer comparison

Among 33 peers in this city , average services per provider: 39. This provider delivers 6.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$216
Transactions
4
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Regeneron Healthcare Solutions, Inc. 1 $131.63
Hologic Sales and Service, LLC 1 $29.44
ARRAY BIOPHARMA INC 1 $28.47
Merck Sharp & Dohme LLC 1 $26.83

By nature of payment

Food and Beverage
$216

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
79
Patients
56
Total drug cost
$643
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 55 39 $460
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 24 17 $182

Frequently asked questions

Auto-generated from federal data
What is Dr. Stanley Leong's medical specialty?
Dr. Stanley Leong practices Surgery Physician in San Francisco, CA.
Where does Dr. Stanley Leong practice?
Dr. Stanley Leong practices at 2340 Clay Street, San Francisco, CA 94115. Office phone: 4156003800.
What is Dr. Stanley Leong's NPI?
Dr. Stanley Leong's National Provider Identifier (NPI) is 1225092596, issued by NPPES.
Does Dr. Stanley Leong accept Medicare assignment?
Yes. Dr. Stanley Leong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stanley Leong commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Measurement of lymphedema extracellular fluid (HCPCS 93702). Source: CMS Medicare Physician & Other Practitioners file.