Doctor profile · Federal record
Dr. Hassan Mahmoud, M.D.
Nephrology Physician (CMS: Nephrology) · Portland, ME
- NPI 1720440712
- Accepts Medicare
- MIPS 93.1 / 100 · 2023
- 15 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1600 Congress St Ste B
Portland, ME 041022148
(207) 774-5222 - Additional location
-
22 Bramhall St
Portland, ME 041023134
(207) 662-0111 - Additional location
-
800 Harrison Ave
Boston, MA 021182905
(617) 638-7361
Credentials & registration
- NPI registered
- March 2016 — 10 yrs on file
- Profile last updated
- June 16, 2021
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Maine #MD24603
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1720440712. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
440
Distinct HCPCS
10
Medicare allowed
$42,501
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 83 | 74 | $88 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 83 | 51 | $70 | |
90935 |
Hemodialysis procedure with physician evaluation | 61 | 43 | $64 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 56 | 24 | $107 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 41 | 36 | $89 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 41 | 39 | $115 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $120 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 16 | 14 | $156 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 15 | 15 | $318 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 14 | $60 |
In context: peer comparison
Among 11 peers in Portland Nephrology Physician, average services per provider: 52. This provider delivers 8.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
604
Patients
244
Total drug cost
$48,842
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 91 | 37 | $752 |
| Amlodipine Besylate | Generic | 78 | 36 | $529 |
| Furosemide | Generic | 57 | 26 | $510 |
| Atorvastatin Calcium | Generic | 56 | 20 | $879 |
| Famotidine | Generic | 45 | 21 | $602 |
| Lisinopril | Generic | 43 | 19 | $267 |
| Losartan Potassium | Generic | 37 | 16 | $815 |
| Chlorthalidone | Generic | 30 | 19 | $626 |
| Metoprolol Tartrate | Generic | 27 | 0 | $285 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 27 | 16 | $209 |
Hospital affiliations
Frequently asked questions
What is Dr. Hassan Mahmoud's medical specialty?
Dr. Hassan Mahmoud practices Nephrology Physician in Portland, ME.
Where does Dr. Hassan Mahmoud practice?
Dr. Hassan Mahmoud practices at 1600 Congress St Ste B, Portland, ME 041022148. Office phone: 2077745222.
What is Dr. Hassan Mahmoud's NPI?
Dr. Hassan Mahmoud's National Provider Identifier (NPI) is 1720440712, issued by NPPES.
Does Dr. Hassan Mahmoud accept Medicare assignment?
Yes. Dr. Hassan Mahmoud accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Hassan Mahmoud commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hemodialysis procedure with physician evaluation (HCPCS 90935). Source: CMS Medicare Physician & Other Practitioners file.