Doctor profile · Federal record
Dr. Warren Gasper, M.D.
Surgery Physician (CMS: Vascular Surgery) · San Francisco, CA
- NPI 1427186212
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
513 Parnassus Ave # S-321, UCSF Department of Surgery
San Francisco, CA 941432205
(415) 476-1239
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- California #A89802
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427186212. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
831
Distinct HCPCS
10
Medicare allowed
$26,065
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93923 |
Complete ultrasound study of arm and leg arteries | 218 | 179 | $23 | |
93925 |
Ultrasound of leg arteries or artery grafts | 167 | 135 | $41 | |
93926 |
Ultrasound of one leg arteries or artery grafts | 76 | 64 | $25 | |
93970 |
Ultrasound study of arm or leg veins with compression and maneuvers | 66 | 65 | $36 | |
93880 |
Ultrasound of both sides of head and neck blood flow | 61 | 59 | $42 | |
93922 |
Ultrasound study of arm and leg arteries | 45 | 40 | $13 | |
93979 |
Ultrasound of aorta, vena cava, groin vessels or bypass grafts | 45 | 40 | $25 | |
93971 |
Ultrasound study of one arm or leg veins with compression and maneuvers | 42 | 42 | $23 | |
93978 |
Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts | 39 | 38 | $41 | |
93975 |
Complete ultrasound of abdomen and pelvis artery and vein blood flow | 25 | 22 | $61 |
In context: peer comparison
Among 33 peers in San Francisco Surgery Physician, average services per provider: 39. This provider delivers 21× the peer median.Open Payments
Industry payments received
All-time total
$2,208
Transactions
13
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| W. L. Gore & Associates, INC. | 6 | $1,261.08 | |
| Provisio Medical, INC. | 1 | $500.00 | |
| Cook Medical LLC | 5 | $281.73 | |
| Medtronic, INC. | 1 | $165.15 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Warren Gasper's medical specialty?
Dr. Warren Gasper practices Surgery Physician in San Francisco, CA.
Where does Dr. Warren Gasper practice?
Dr. Warren Gasper practices at 513 Parnassus Ave # S-321, San Francisco, CA 941432205. Office phone: 4154761239.
What is Dr. Warren Gasper's NPI?
Dr. Warren Gasper's National Provider Identifier (NPI) is 1427186212, issued by NPPES.
Does Dr. Warren Gasper accept Medicare assignment?
Yes. Dr. Warren Gasper accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Warren Gasper commonly perform?
Top Medicare-reported procedures in 2023: Complete ultrasound study of arm and leg arteries (HCPCS 93923); Ultrasound of leg arteries or artery grafts (HCPCS 93925); Ultrasound of one leg arteries or artery grafts (HCPCS 93926). Source: CMS Medicare Physician & Other Practitioners file.