Doctor profile · Federal record
Dr. Francis Yao, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · San Francisco, CA
- NPI 1134177470
- Accepts Medicare
- MIPS 72.3 / 100 · 2023
- 39 yrs in practice
- Male
- No sanctions
Practice & contact
- Primary practice
-
350 Parnassus Ave
San Francisco, CA 941430001
(415) 353-2318
fax (415) 353-2407 - Mailing address
-
1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 941430001
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- September 11, 2025
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G65786
- Medicaid
- CA #0G6578600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134177470. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
763
Distinct HCPCS
8
Medicare allowed
$111,883
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 390 | 203 | $162 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 162 | 53 | $134 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 59 | 35 | $212 | |
G0316 |
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 48 | 12 | $35 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 30 | $196 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 32 | 14 | $35 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 24 | 24 | $204 | |
91200 |
Measurement of liver stiffness | 15 | 15 | $12 |
In context: peer comparison
Among 24 peers in San Francisco Gastroenterology Physician, average services per provider: 42. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$36,223
Transactions
31
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 22 | $20,794.01 | |
| Boston Scientific Corporation | 8 | $15,291.71 | |
| Mallinckrodt Hospital Products INC. | 1 | $137.03 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,355
Patients
207
Total drug cost
$1,460,312
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Vemlidy (Tenofovir Alafenamide) | Brand | 609 | 69 | $1,047,106 |
| Entecavir | Generic | 193 | 44 | $95,116 |
| Ursodiol | Generic | 104 | 31 | $26,398 |
| Xifaxan (Rifaximin) | Brand | 61 | 0 | $210,842 |
| Prednisone | Generic | 60 | 0 | $372 |
| Atorvastatin Calcium | Generic | 53 | 14 | $1,037 |
| Azathioprine | Generic | 50 | 11 | $2,925 |
| Omeprazole | Generic | 47 | 15 | $1,049 |
| Tenofovir Disoproxil Fumarate | Generic | 31 | 0 | $9,415 |
| Ciprofloxacin Hcl | Generic | 30 | 11 | $536 |
Hospital affiliations
Frequently asked questions
What is Dr. Francis Yao's medical specialty?
Dr. Francis Yao practices Gastroenterology Physician in San Francisco, CA.
Where does Dr. Francis Yao practice?
Dr. Francis Yao practices at 350 Parnassus Ave, San Francisco, CA 941430001. Office phone: 4153532318.
What is Dr. Francis Yao's NPI?
Dr. Francis Yao's National Provider Identifier (NPI) is 1134177470, issued by NPPES.
Does Dr. Francis Yao accept Medicare assignment?
Yes. Dr. Francis Yao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Francis Yao commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.