Alexander J Harmatz, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

MD16455 Issued in RI

Practice address

825 Chalkstone Ave
Providence, RI 02908-4728

Phone

(401) 456-6510

NPI assigned

Apr 10, 2006

Last updated

Apr 6, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in PA, RI2 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

Specialty

GastroenterologyAlso: Internal Medicine

Education

Medical College of Georgia School of Medicine, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Prospect Chartercare Physicians LLCGroup PAC ID 0840416657, 71 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Our Lady of Fatima Hospital Hospital, North Providence, RI, CCN 410005
• Roger Williams Medical Center Hospital, Providence, RI, CCN 410004
• The Miriam Hospital Hospital, Providence, RI, CCN 410012

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: alex.harmatz.1@9000.direct.athenahealth.com

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

• Prospect Chartercare Physicians, LLC

  dba CharterCARE Medical Associates

  • Internal Medicine Physician
  • Cranston, RI
  • NPI 1629493135

  Gastroenterology

  Medicare reassignment Care Compare group NPD
• Chartercare Physicians, LLC

  dba CharterCare Medical Associates

  • Internal Medicine Physician
  • Cranston, RI
  • NPI 1235945650

  Gastroenterology

  Medicare reassignment NPD
• Prospect Chartercare Elmhurst, LLC

  dba Elmhurst Extended Care Facility

  • Skilled Nursing Facility
  • Providence, RI
  • NPI 1457776452
  NPD (past)

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

• Prospect Chartercare RWMC, LLC

  dba Roger Williams Medical Center

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1013332014
  Care Compare affiliation
• Prospect Chartercare Sjhsri, LLC

  dba Our Lady of Fatima Hospital

  • General Acute Care Hospital
  • North Providence, RI
  • NPI 1871918870
  Care Compare affiliation
• The Miriam Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1487649430
  Care Compare affiliation

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

{
    "created_epoch": "1144627200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775433600000",
    "number": "1730142696",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10 PRESIDENTIAL BLVD",
            "address_2": "SUITE 124",
            "city": "BALA CYNWYD",
            "state": "PA",
            "postal_code": "190041107",
            "telephone_number": "610-664-9700",
            "fax_number": "610-664-6391"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "825 CHALKSTONE AVE",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029084728",
            "telephone_number": "401-456-6510"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 High Service Ave",
            "address_purpose": "LOCATION",
            "city": "N Providence",
            "state": "RI",
            "postal_code": "029045113",
            "country_code": "US",
            "telephone_number": "401-456-6510",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "50 Maude St",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029084325",
            "country_code": "US",
            "telephone_number": "401-456-6510",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARMATZ",
        "first_name": "ALEXANDER",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-10",
        "last_updated": "2026-04-06",
        "certification_date": "2026-04-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "RI",
            "license": "MD16455",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1235945650",
            "state": "RI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Susan Hardy, RN
• Amanda Hareld, LCDP
• Tyler Hargis
• Emma Hargreaves
• Livia Harkow
• Amy Cathryn Harmon, CCC-SLP
• Harold J Wanebo MD LLC
• Thomas J Haronian, MD
• Ashley Harpin
• Adam Harrington

• Gastroenterology Physician in Providence, RI
• Providers in Providence, RI by specialty
• Gastroenterology Physician in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 6, 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.