Doctor profile · Federal record
Dr. William Simmons, MD
Infectious Disease Physician (CMS: Infectious Disease) · San Francisco, CA
- NPI 1326537721
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
400 Parnassus Ave # 336
San Francisco, CA 941432202
(415) 353-2626
fax (415) 353-3528
Credentials & registration
- NPI registered
- May 2018 — 8 yrs on file
- Profile last updated
- August 7, 2023
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- California #A186895
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326537721. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
120
Distinct HCPCS
6
Medicare allowed
$18,028
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 30 | 23 | $132 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 23 | 16 | $160 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 20 | 20 | $202 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 20 | 11 | $88 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $193 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 13 | $144 |
In context: peer comparison
Among 19 peers in San Francisco Infectious Disease Physician, average services per provider: 69. This provider delivers 1.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
22
Patients
0
Total drug cost
$542
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Isoniazid | Generic | 11 | 0 | $153 |
| Rifampin | Generic | 11 | 0 | $389 |
Hospital affiliations
Frequently asked questions
What is Dr. William Simmons's medical specialty?
Dr. William Simmons practices Infectious Disease Physician in San Francisco, CA.
Where does Dr. William Simmons practice?
Dr. William Simmons practices at 400 Parnassus Ave # 336, San Francisco, CA 941432202. Office phone: 4153532626.
What is Dr. William Simmons's NPI?
Dr. William Simmons's National Provider Identifier (NPI) is 1326537721, issued by NPPES.
Does Dr. William Simmons accept Medicare assignment?
Yes. Dr. William Simmons accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Simmons commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.