Doctor profile · Federal record
Dr. Sarah Williams, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Stanford, CA
- NPI 1366476640
- Accepts Medicare
- MIPS 75.5 / 100 · 2023
- 29 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 Pasteur Dr
Stanford, CA 943052200
(650) 723-4000 - Additional location
-
1783 El Camino Real
Burlingame, CA 940103205
(650) 696-5500
fax (650) 696-5378
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- March 21, 2024
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A66325
- Medicaid
- CA #00A663250
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366476640. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
48
Distinct HCPCS
2
Medicare allowed
$8,247
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 31 | 31 | $193 | |
99284 |
Emergency department visit with moderate level of medical decision making | 17 | 17 | $133 |
In context: peer comparison
Among 60 peers in Stanford Emergency Medicine Physician, average services per provider: 60. This provider delivers 0.8× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Sarah Williams's medical specialty?
Dr. Sarah Williams practices Emergency Medicine Physician in Stanford, CA.
Where does Dr. Sarah Williams practice?
Dr. Sarah Williams practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Sarah Williams's NPI?
Dr. Sarah Williams's National Provider Identifier (NPI) is 1366476640, issued by NPPES.
Does Dr. Sarah Williams accept Medicare assignment?
Yes. Dr. Sarah Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sarah Williams commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.