Doctor profile · Federal record
Dr. Zainab Mezban, MD
Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Walnut Creek, CA
- NPI 1275621872
- Accepts Medicare
- MIPS 85.7 / 100 · 2023
- 28 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1220 Rossmoor Parkway
Walnut Creek, CA 945952501
(925) 947-3312
fax (925) 947-3396 - Mailing address
-
1450 Treat Blvd, Ste 300
Walnut Creek, CA 945972168
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- July 22, 2024
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A94338
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275621872. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
663
Distinct HCPCS
5
Medicare allowed
$75,911
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 287 | 161 | $86 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 235 | 139 | $130 | |
99239 |
Hospital discharge day management, more than 30 minutes | 96 | 96 | $126 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 33 | $192 | |
99285 |
Emergency department visit with high level of medical decision making | 12 | 12 | $190 |
In context: peer comparison
Among 44 peers in Walnut Creek Internal Medicine Physician, average services per provider: 260. This provider delivers 2.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
26
Patients
11
Total drug cost
$318
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 14 | 11 | $201 |
| Atorvastatin Calcium | Generic | 12 | 0 | $117 |
Frequently asked questions
What is Dr. Zainab Mezban's medical specialty?
Dr. Zainab Mezban practices Internal Medicine Physician in Walnut Creek, CA.
Where does Dr. Zainab Mezban practice?
Dr. Zainab Mezban practices at 1220 Rossmoor Parkway, Walnut Creek, CA 945952501. Office phone: 9259473312.
What is Dr. Zainab Mezban's NPI?
Dr. Zainab Mezban's National Provider Identifier (NPI) is 1275621872, issued by NPPES.
Does Dr. Zainab Mezban accept Medicare assignment?
Yes. Dr. Zainab Mezban accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zainab Mezban commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.