John Mark Ryan, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MD07097 Issued in RI

Practice address

245 Chapman St
Providence, RI 02905-4539

Phone

(401) 444-4741

Fax

(401) 444-4445

NPI assigned

Jun 7, 2006

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

Medicare fee-for-service enrollment

Enrolled in RI

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

Internal Medicine

Education

Warren Alpert Medical School of Brown University, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Brown MedicineGroup PAC ID 0446159776, 220 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• The Miriam Hospital Hospital, Providence, RI, CCN 410012
• Rhode Island Hospital Hospital, Providence, RI, CCN 410007

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Brown Medicine

  • Internal Medicine Physician
  • Riverside, RI
  • NPI 1689626764
  Medicare reassignment Care Compare group NPD
• Rhode Island Hospital

  • Multi-Specialty Clinic/Center
  • Providence, RI
  • NPI 1154537520
  Medicare reassignment NPD
• The Miriam Hospital

  • Multi-Specialty Clinic/Center
  • Providence, RI
  • NPI 1598978744
  Medicare reassignment NPD
• Brown Medicine

  • Clinical Psychologist
  • Riverside, RI
  • NPI 1467190496
  NPD
• Brown Medicine

  • Gastroenterology Physician
  • Providence, RI
  • NPI 1730827767
  NPD
• Rhode Island Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1972768174
  NPD
• The Miriam Hospital

  • Cardiac Rehabilitation Clinic/Center
  • East Greenwich, RI
  • NPI 1518482389
  NPD
• The Miriam Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1770520462
  NPD
• Rhode Island Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1588659528
  NPD (past)

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

• Rhode Island Hospital

  • Ambulance
  • Providence, RI
  • NPI 1053552299

  Hospital

  Care Compare affiliation
• Rhode Island Hospital

  • Clinic/Center
  • Providence, RI
  • NPI 1154663383

  Hospital

  Care Compare affiliation
• Rhode Island Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1588659528
  Care Compare affiliation
• Rhode Island Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1972768174
  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": "1149638400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755129600000",
    "number": "1841230968",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "DEPT 3010, PO BOX 986524",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022986524",
            "telephone_number": "401-443-4992",
            "fax_number": "401-537-7241"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "245 CHAPMAN ST",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029054539",
            "telephone_number": "401-444-4741",
            "fax_number": "401-444-4445"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "375 Wampanoag Trl",
            "address_2": "Suite 201",
            "address_purpose": "LOCATION",
            "city": "Riverside",
            "state": "RI",
            "postal_code": "029152232",
            "country_code": "US",
            "telephone_number": "401-649-4020",
            "fax_number": "401-649-4021",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RYAN",
        "first_name": "JOHN",
        "middle_name": "MARK",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-07",
        "last_updated": "2025-08-14",
        "certification_date": "2025-08-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "RI",
            "license": "MD07097",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Melissa Lauren Russo, M.D.
• Constance Gilbert Rust
• Elizabeth Rutkowski, LICSW
• RWM Consulting
• James Patrick Ryan, R.PH.
• Kathryn M Ryan, LCSW, LICSW
• Laura Nina Ryan, LICSW
• Meghan M Ryan, PT
• Sara Louise Ryan, D.A.
• Suzanne L Ryan, N.P.

• Internal Medicine Physician in Providence, RI
• Providers in Providence, RI by specialty
• Internal Medicine Physician in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 14, 2025; 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.