John Aristotle Damianos, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

35.156116 Issued in OH

Practice address

9500 Euclid Ave
Cleveland, OH 44195-0001

Phone

(216) 444-2200

NPI assigned

Apr 8, 2020

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

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MN

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 1

Specialty

Gastroenterology

Education

Geisel School of Medicine at Dartmouth, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Mayo ClinicGroup PAC ID 6507778255, 4,829 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mayo Clinic Hospital Rochester Hospital, Rochester, MN, CCN 240010
• Cleveland Clinic Hospital, Cleveland, OH, CCN 360180
• Mayo Clinic Health System-Franciscan Medical Center Inc Hospital, La Crosse, WI, CCN 520004

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jdamianos1950649@ehrdirect.mayoclinicmsg.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.

• Mayo Clinic

  • Multi-Specialty Clinic/Center
  • Rochester, MN
  • NPI 1922074434

  Gastroenterology

  Medicare reassignment Care Compare group NPD
• Mayo Clinic

  • Clinical Medical Laboratory
  • Rochester, MN
  • NPI 1083249577
  NPD
• Mayo Clinic

  • Infectious Disease Physician
  • Rochester, MN
  • NPI 1114343860
  NPD

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

• The Cleveland Clinic Foundation

  • General Acute Care Hospital
  • Cleveland, OH
  • NPI 1679525919
  Care Compare affiliation
• Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

  • General Acute Care Hospital
  • La Crosse, WI
  • NPI 1801874227
  Care Compare affiliation
• Mayo Clinic Hospital-Rochester

  • General Acute Care Hospital
  • Rochester, MN
  • NPI 1841266194
  Care Compare affiliation

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

{
    "created_epoch": "1586304000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783987200000",
    "number": "1265061444",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9500 EUCLID AVE",
            "city": "CLEVELAND",
            "state": "OH",
            "postal_code": "441950001",
            "telephone_number": "250-728-4251"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9500 EUCLID AVE",
            "city": "CLEVELAND",
            "state": "OH",
            "postal_code": "441950001",
            "telephone_number": "216-444-2200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 1st St SW",
            "address_purpose": "LOCATION",
            "city": "Rochester",
            "state": "MN",
            "postal_code": "559050001",
            "country_code": "US",
            "telephone_number": "507-284-2511",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "20 York Street",
            "address_2": "Tompkins 226 New Haven, CT",
            "address_purpose": "LOCATION",
            "city": "New Haven",
            "state": "CT",
            "postal_code": "065103220",
            "country_code": "US",
            "telephone_number": "203-688-9503",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DAMIANOS",
        "first_name": "JOHN",
        "middle_name": "ARISTOTLE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-08",
        "last_updated": "2026-07-14",
        "certification_date": "2026-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "OH",
            "license": "35.156116",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jdamianos1950649@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "200 1st St SW",
            "city": "Rochester",
            "state": "MN",
            "country_code": "US",
            "postal_code": "559050001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Veena Madhuri Damarla, MD
• Ayana Dambaeva, MD
• Nina Margaret Dambrosio, CNP
• Erica Dame
• Carla Christine Damia
• Beverly A Damico
• Sofi Damjanovska, MD
• Julie Ann Damko, FNP
• Kelli Damman
• Carrington Dammons, MPA

• Gastroenterology Physician in Cleveland, OH
• Providers in Cleveland, OH by specialty
• Gastroenterology Physician in Ohio

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 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.