Hassan Mahmoud, M.D.
NPI 1720440712 · Nephrology Physician · Portland, ME
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hassan Mahmoud, M.D. is a Nephrology Physician provider in Portland, ME (NPI 1720440712).
Provider details
- NPI number
- 1720440712
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD24603 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
363 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $97 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 62 | $79 |
| Hemodialysis Procedure With Physician Evaluation90935 | 54 | $72 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 54 | $119 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 32 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 68 | 30 |
| Atorvastatin Calcium | 62 | 27 |
| Prednisone | 61 | 26 |
| Furosemide | 41 | 19 |
| Chlorthalidone | 40 | 14 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 39 | 14 |
| Losartan Potassium | 38 |
Practice location
Mailing address
Additional practice locations (2)
- 800 Harrison AveBoston, MA 02118-2905Phone: (617) 638-7361
- 22 Bramhall StPortland, ME 04102-3134Phone: (207) 662-0111
Registry dates
- Enumerated
- 2016-03-28
- Last updated
- 2021-06-16
- Certified
- 2021-06-16
Frequently asked questions
- What is Hassan Mahmoud's NPI number?
- Hassan Mahmoud's National Provider Identifier (NPI) is 1720440712, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hassan Mahmoud's specialty?
- Hassan Mahmoud is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Hassan Mahmoud located?
- Hassan Mahmoud's practice location on file with NPPES is 1600 Congress St Ste B, Portland, ME 04102-2148.
- What is Hassan Mahmoud's phone number?
- The practice phone number listed in the NPPES registry for Hassan Mahmoud is (207) 774-5222.
- Does Hassan Mahmoud accept Medicare?
- Hassan Mahmoud is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hassan Mahmoud's NPI active?
- Yes — Hassan Mahmoud's NPI (1720440712) is active in the NPPES registry as of the last update on 2021-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.