Mark Edward Alexander, MD

Primary specialty

Pediatric Cardiology PhysicianTaxonomy code 2080P0202X

License

MD22858 Issued in ME

Practice address

71 US Route 1 Ste C
Scarborough, ME 04074-7174

Phone

(207) 883-5532

Fax

(207) 883-5552

NPI assigned

Oct 25, 2005

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 6

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in MA, ME2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: malexander252781@direct.mmc.mainehealth.org
• Direct secure messaging: malexander26009@direct.bostonchildrens.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Boston Childrens Heart Foundation Inc

  • Pediatric Cardiology Physician
  • Boston, MA
  • NPI 1982680922

  Clinical Cardiac Electrophysiology, MA

  Medicare reassignment Care Compare group NPD
• Maine Medical Partners

  • Obstetrics & Gynecology Physician
  • Portland, ME
  • NPI 1104921535

  ME

  Medicare reassignment NPD
• Mainehealth

  • Psychiatric Hospital
  • Westbrook, ME
  • NPI 1790265502

  ME

  Medicare reassignment NPD
• York Hospital

  • General Acute Care Hospital
  • York, ME
  • NPI 1376528398

  ME, Pediatrics

  Medicare reassignment NPD
• Coastal Medical Associates

  • Anesthesiology Physician
  • Weymouth, MA
  • NPI 1932175684

  MA

  Medicare reassignment NPD
• Maine Medical Partners

  • Surgery Physician
  • Scarborough, ME
  • NPI 1346687167
  NPD
• Maine Medical Partners

  • Cardiovascular Disease Physician
  • Scarborough, ME
  • NPI 1386937175

  Clinical Cardiac Electrophysiology

  NPD
• Mainehealth

  • Community/Retail Pharmacy
  • Portland, ME
  • NPI 1013868181
  NPD
• Mainehealth

  • Clinic/Center
  • Portland, ME
  • NPI 1487346722

  Pediatrics

  NPD (past)
• Childrens Hospital Boston

  • Children's Hospital
  • Boston, MA
  • NPI 1770741530
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650

  Hospital

  Care Compare affiliation
• Children'S Hospital Corporation

  • Children's Hospital
  • Boston, MA
  • NPI 1710087127

  Hospital

  Care Compare affiliation

Specialty

Pediatric MedicineAlso: Cardiovascular Disease (Cardiology)

Education

Northwestern University Feinberg Medical School, 1985

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Boston Childrens Heart Foundation Inc 102 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Boston Children'S Hospital Hospital, Boston, MA, CCN 223302
• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110

Merit-based Incentive Payment System (MIPS)

Final score

97.93 of 100Reported as apm

Quality

83.31

Promoting interoperability

100

Improvement activities

40

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1130198400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771804800000",
    "number": "1013907666",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "71 US ROUTE 1 STE C",
            "city": "SCARBOROUGH",
            "state": "ME",
            "postal_code": "040747174",
            "telephone_number": "207-883-5532",
            "fax_number": "207-883-5552"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "71 US ROUTE 1 STE C",
            "city": "SCARBOROUGH",
            "state": "ME",
            "postal_code": "040747174",
            "telephone_number": "207-883-5532",
            "fax_number": "207-883-5552"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 Longwood Ave",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021155724",
            "country_code": "US",
            "telephone_number": "617-355-2793",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "96 Campus Dr",
            "address_purpose": "LOCATION",
            "city": "Scarborough",
            "state": "ME",
            "postal_code": "040747163",
            "country_code": "US",
            "telephone_number": "207-885-9905",
            "fax_number": "207-396-5600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "22 Bramhall St",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "ME",
            "postal_code": "041023134",
            "country_code": "US",
            "telephone_number": "207-885-9905",
            "fax_number": "207-396-5600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALEXANDER",
        "first_name": "MARK",
        "middle_name": "EDWARD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-25",
        "last_updated": "2026-02-23",
        "certification_date": "2026-02-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "MA",
            "license": "77492",
            "primary": false
        },
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "MA",
            "license": "77492",
            "primary": false
        },
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "ME",
            "license": "MD22858",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "ME",
            "license": "MD22858",
            "primary": false
        },
        {
            "code": "207RA0002X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Adult Congenital Heart Disease",
            "state": "ME",
            "license": "MD22858",
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "ME",
            "license": "MD22858",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3183467",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Breanna A Agbortoko, PHARMD
• Khaled Al Sibai, MD
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• Walter Charles Allan, M.D.
• Allegiance Bay Care LLC
• Warren D Alpern, M.D.

• All providers in Scarborough, ME
• Pediatric Cardiology Physician in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.