Doctor profile · Federal record
Dr. Monica El-Masry, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Simi Valley, CA
- NPI 1578797171
- Accepts Medicare
- 17 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1157 Swallow Ln
Simi Valley, CA 930653155
(805) 527-2770
fax (805) 527-2870 - Mailing address
-
Po Box 512185
Los Angeles, CA 900510185
Credentials & registration
- NPI registered
- May 2009 — 17 yrs on file
- Profile last updated
- October 30, 2025
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #A114528
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1578797171. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
235
Distinct HCPCS
7
Medicare allowed
$29,134
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 69 | 26 | $105 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 49 | 23 | $154 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 34 | 34 | $143 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 32 | 32 | $194 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 18 | 18 | $88 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 17 | 14 | $71 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 16 | 14 | $34 |
In context: peer comparison
Among 1 peers in Simi Valley Hematology & Oncology Physician, average services per provider: 33. This provider delivers 7.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
13
Patients
0
Total drug cost
$299
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 13 | 0 | $299 |
Hospital affiliations
Frequently asked questions
What is Dr. Monica El-Masry's medical specialty?
Dr. Monica El-Masry practices Hematology & Oncology Physician in Simi Valley, CA.
Where does Dr. Monica El-Masry practice?
Dr. Monica El-Masry practices at 1157 Swallow Ln, Simi Valley, CA 930653155. Office phone: 8055272770.
What is Dr. Monica El-Masry's NPI?
Dr. Monica El-Masry's National Provider Identifier (NPI) is 1578797171, issued by NPPES.
Does Dr. Monica El-Masry accept Medicare assignment?
Yes. Dr. Monica El-Masry accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Monica El-Masry commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.