Doctor profile · Federal record
Dr. Marcus Williams
Emergency Medicine Physician (CMS: Emergency Medicine) · Oakland, CA
- NPI 1851708168
- Accepts Medicare
- MIPS 90.0 / 100 · 2023
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1411 E 31St St
Oakland, CA 946021018
(510) 437-4800 - Mailing address
-
2500 Merced St
San Leandro, CA 945774201
Credentials & registration
- NPI registered
- July 2014 — 12 yrs on file
- Profile last updated
- May 10, 2017
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A103108
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851708168. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
921
Distinct HCPCS
9
Medicare allowed
$96,726
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 247 | 200 | $9 | |
93042 |
Electrocardiogram (ecg) 1 to 3 leads with review by physician only | 164 | 160 | $8 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 162 | 159 | $196 | |
99291 |
Critical care, first 30-74 minutes | 107 | 106 | $236 | |
99285 |
Emergency department visit with high level of medical decision making | 96 | 94 | $190 | |
99284 |
Emergency department visit with moderate level of medical decision making | 59 | 58 | $131 | |
99292 |
Critical care, each additional 30 minutes | 59 | 43 | $119 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $147 | |
99497 |
Advance care planning, first 30 minutes | 13 | 13 | $86 |
In context: peer comparison
Among 71 peers in this city , average services per provider: 73. This provider delivers 13× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
126
Patients
124
Total drug cost
$989
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 32 | 31 | $124 |
| Cephalexin | Generic | 21 | 21 | $245 |
| Ibuprofen | Generic | 16 | 16 | $89 |
| Ondansetron Odt (Ondansetron) | Brand | 15 | 14 | $110 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 15 | 15 | $109 |
| Mupirocin | Generic | 14 | 14 | $138 |
| Doxycycline Hyclate | Generic | 13 | 13 | $174 |
Hospital affiliations
Frequently asked questions
What is Dr. Marcus Williams's medical specialty?
Dr. Marcus Williams practices Emergency Medicine Physician in Oakland, CA.
Where does Dr. Marcus Williams practice?
Dr. Marcus Williams practices at 1411 E 31St St, Oakland, CA 946021018. Office phone: 5104374800.
What is Dr. Marcus Williams's NPI?
Dr. Marcus Williams's National Provider Identifier (NPI) is 1851708168, issued by NPPES.
Does Dr. Marcus Williams accept Medicare assignment?
Yes. Dr. Marcus Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marcus Williams commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Electrocardiogram (ecg) 1 to 3 leads with review by physician only (HCPCS 93042); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.