Doctor profile · Federal record
Dr. Darby Clayson, MD
Internal Medicine Physician (CMS: Hospitalist) · Military Health Care Provider · Internal Medicine Physician · San Francisco, CA
- NPI 1619968021
- MIPS 63.0 / 100 · 2023
- 28 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1575 7Th Ave
San Francisco, CA 941223704
(702) 453-3799
fax (702) 453-5741 - Mailing address
-
Po Box 31085
San Francisco, CA 941310085
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- February 27, 2026
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- California #A139455 · Nevada #11502
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619968021. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,613
Distinct HCPCS
10
Medicare allowed
$194,845
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 528 | 157 | $85 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 528 | 172 | $122 | |
99305 |
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 124 | 108 | $151 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 77 | 55 | $132 | |
99306 |
Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 76 | 74 | $206 | |
99310 |
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 73 | 50 | $174 | |
99316 |
Nursing facility discharge management, more than 30 minutes | 55 | 51 | $148 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 54 | 52 | $191 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 43 | 21 | $87 | |
99315 |
Nursing facility discharge day management, 30 minutes or less | 30 | 30 | $93 |
In context: peer comparison
Among 236 peers in San Francisco Internal Medicine Physician, average services per provider: 93. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$129
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 1 | $129.41 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,516
Patients
244
Total drug cost
$70,581
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 251 | 51 | $4,422 |
| Amlodipine Besylate | Generic | 189 | 37 | $1,468 |
| Levothyroxine Sodium | Generic | 144 | 13 | $1,439 |
| Eliquis (Apixaban) | Brand | 131 | 18 | $38,222 |
| Furosemide | Generic | 128 | 19 | $674 |
| Gabapentin | Generic | 118 | 25 | $1,723 |
| Lisinopril | Generic | 93 | 17 | $1,025 |
| Famotidine | Generic | 75 | 15 | $978 |
| Metoprolol Succinate | Generic | 70 | 15 | $908 |
| Metformin Hcl | Generic | 64 | 0 | $591 |
Hospital affiliations
Frequently asked questions
What is Dr. Darby Clayson's medical specialty?
Dr. Darby Clayson practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Darby Clayson practice?
Dr. Darby Clayson practices at 1575 7Th Ave, San Francisco, CA 941223704. Office phone: 7024533799.
What is Dr. Darby Clayson's NPI?
Dr. Darby Clayson's National Provider Identifier (NPI) is 1619968021, issued by NPPES.
Does Dr. Darby Clayson accept Medicare assignment?
Dr. Darby Clayson does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Darby Clayson commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Subsequent nursing facility care with moderate level of medical decision making (HCPCS 99309); Initial nursing facility care with moderate level of medical decision making (HCPCS 99305). Source: CMS Medicare Physician & Other Practitioners file.