HASSAN MAHMOUD M.D.
NPI 1720440712
Internal Medicine - Nephrology in Portland, ME

Q: What is Hassan Mahmoud's NPI number?

The NPI number for Hassan Mahmoud is 1720440712. It was assigned to this individual provider in the NPPES registry on March 28, 2016.

Q: What is Hassan Mahmoud's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Hassan Mahmoud was last updated on June 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 28, 2016PECOS EnrolledAccepts Medicare Assignment

98.06/100

CMS Quality Rating

1600 CONGRESS ST STE B, PORTLAND, ME 04102(207) 774-5222 Get Directions Write a Review

NPPES record last updated: June 16, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 16, 2021, Nov 21, 2019, Mar 28, 2016 (3 updates tracked since 2016).

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About Hassan Mahmoud M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HASSAN MAHMOUD M.D. (NPI 1720440712) is an individual nephrology provider in Portland, Maine, licensed in Maine (MD24603) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1720440712

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameHASSAN MAHMOUDCredential: M.D.

Location Address1600 CONGRESS ST STE BPortland, ME 04102-2148

Mailing Address1600 Congress St Ste BPortland, ME 04102-2148 · (207) 774-5222

Phone(207) 774-5222

Sole ProprietorNo

Medical School CMSOtherGraduated 2011

Enumeration DateMarch 28, 2016

Last NPPES UpdateJune 16, 20213 updates tracked since enumeration

NPPES CertifiedJune 16, 2021

✔ NPI 1720440712 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in ME · MD24603

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

1600 CONGRESS ST STE B, Portland, ME 04102

Open in Google Maps ↗

Secondary Practice Locations 2

Location 122 Bramhall StPortland, ME 04102-3134 · Phone (207) 662-0111

Location 2800 Harrison AveBoston, MA 02118-2905 · Phone (617) 638-7361

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Hassan Mahmoud M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254629827

PECOS Enrollment IDI20210804003584

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Hassan Mahmoud reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Maine Medical Partners

0.9 mi

Orthopaedic Trauma

335 BRIGHTON AVE, SUITE 200
Portland, ME 04102

Reassigned Medicare billing, Maine enrollment
264 clinicians in this Medicare group

NPI 1124335591 (207) 662-8600

Mainehealth

1.5 mi

Gynecology

100 BRICKHILL AVE
South Portland, ME 04106

Reassigned Medicare billing, Maine enrollment
3,140 clinicians in this Medicare group

NPI 1679887400 (207) 775-1255

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

103 services80 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

62 services43 patients

Hemodialysis procedure with physician evaluation 90935

Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.

54 services30 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

54 services26 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

32 services31 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

18 services18 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maine Medical Center

Acute Care Hospitals · Portland, ME

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number200009

Location22 Bramhall StPortland, ME 04102 · Cumberland County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.83 typical visit price

range $56.28 – $169.96

Typical copayment $32.20 (range $14.07 – $42.49)

Most-billed visit code 99204

Established Patient

$99.18 typical visit price

range $18.22 – $138.92

Typical copayment $24.79 (range $4.55 – $34.73)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.06/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

86.13

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 9

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Azathioprine, oral, 50 mg J7500

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers19 claims1,350 services$1.59 avg. paid by Medicare

Cyclosporine, oral, 100 mg J7502

Treatment-Treatment - Miscellaneous · category RX029N

4 suppliers14 claims720 services$1.53 avg. paid by Medicare

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

7 suppliers313 claims27,990 services$0.29 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

5 suppliers209 claims36,300 services$0.01 avg. paid by Medicare

Cyclosporine, oral, 25 mg J7515

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers14 claims1,020 services$0.55 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

4 suppliers111 claims17,084 services$0.18 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PRASHEEN PIYUSH SHAH MD

Internal Medicine (Nephrology)