Doctor profile · Federal record
Dr. Summaiya Muhammad, M.D
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Castro Valley, CA
- NPI 1841454535
- Accepts Medicare
- 24 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
20103 Lake Chabot RD
Castro Valley, CA 945465305
(510) 727-3256 - Mailing address
-
3687 Mt Diablo Blvd, Suite 200
Lafayette, CA 945493717
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- May 9, 2017
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- California #A117252 · Illinois #125052361
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841454535. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
997
Distinct HCPCS
4
Medicare allowed
$126,581
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 685 | 343 | $134 | |
99239 |
Hospital discharge day management, more than 30 minutes | 205 | 195 | $131 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 65 | 47 | $90 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 42 | 28 | $56 |
In context: peer comparison
Among 15 peers in Castro Valley Hospitalist Physician, average services per provider: 130. This provider delivers 7.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
66
Patients
16
Total drug cost
$7,071
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 16 | 16 | $106 |
| Metoprolol Tartrate | Generic | 15 | 0 | $80 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 0 | $116 |
| Atorvastatin Calcium | Generic | 11 | 0 | $121 |
| Eliquis (Apixaban) | Brand | 11 | 0 | $6,647 |
Hospital affiliations
Frequently asked questions
What is Dr. Summaiya Muhammad's medical specialty?
Dr. Summaiya Muhammad practices Hospitalist Physician in Castro Valley, CA.
Where does Dr. Summaiya Muhammad practice?
Dr. Summaiya Muhammad practices at 20103 Lake Chabot RD, Castro Valley, CA 945465305. Office phone: 5107273256.
What is Dr. Summaiya Muhammad's NPI?
Dr. Summaiya Muhammad's National Provider Identifier (NPI) is 1841454535, issued by NPPES.
Does Dr. Summaiya Muhammad accept Medicare assignment?
Yes. Dr. Summaiya Muhammad accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Summaiya Muhammad commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.