Johnny A. Chang, M.D.

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

041177 Issued in CT

Practice address

410 Saybrook Rd
Middletown, CT 06457-4777

Phone

(860) 358-2270

Fax

(860) 358-2275

NPI assigned

Jul 8, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 8

Medicare fee-for-service enrollment

Enrolled in CT

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

Urology

Education

Un of California, Irvine, College of Medicine, 1997

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

MHS Primary Care, Inc.Group PAC ID 4082507371, 180 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Middlesex Hospital Hospital, Middletown, CT, CCN 070020

Merit-based Incentive Payment System (MIPS)

Final score

88.05 of 100Reported as group

Quality

70.34

Promoting interoperability

100

Improvement activities

40

Cost

75.39

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jchang95141@middlesexhealthprd.direct-ci.com

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.

• MHS Primary Care, Inc

  • Family Medicine Physician
  • Middletown, CT
  • NPI 1336279058
  Medicare reassignment Care Compare group NPD
• Bristol Hospital Multi Specialty Group, Inc

  • General Practice Physician
  • Bristol, CT
  • NPI 1649265679
  Medicare reassignment NPD
• The Charlotte Hungerford Hospital

  • General Acute Care Hospital
  • Torrington, CT
  • NPI 1629075734
  Medicare reassignment NPD
• MHS Primary Care Inc

  • Internal Medicine Physician
  • Essex, CT
  • NPI 1750276655
  NPD
• The Charlotte Hungerford Hospital

  • Psychiatric Hospital Unit
  • Torrington, CT
  • NPI 1639255870
  NPD

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

• Middlesex Hospital

  • General Acute Care Hospital
  • Middletown, CT
  • NPI 1760454334
  Care Compare affiliation

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

{
    "created_epoch": "1120780800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777939200000",
    "number": "1619975182",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "28 CRESCENT ST",
            "city": "MIDDLETOWN",
            "state": "CT",
            "postal_code": "064573650",
            "telephone_number": "860-358-6000",
            "fax_number": "860-358-8661"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "410 SAYBROOK RD",
            "city": "MIDDLETOWN",
            "state": "CT",
            "postal_code": "064574777",
            "telephone_number": "860-358-2270",
            "fax_number": "860-358-2275"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "JOHNNY",
        "middle_name": "A.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-08",
        "last_updated": "2026-05-05",
        "certification_date": "2026-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "CT",
            "license": "041177",
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "CT",
            "license": "041177",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITED HEALTHCARE ID",
            "identifier": "0000231610801",
            "state": "CT"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1411777",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA PROVIDER ID",
            "identifier": "3159551",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CONNECTICARE PROVIDER ID",
            "identifier": "041177",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTHNET PROVIDER ID",
            "identifier": "2V4421",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CARE FAMILY PLAN ID",
            "identifier": "00141177700",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD PROVIDER ID",
            "identifier": "010041177CT01",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "OXFORD PROVIDER ID",
            "identifier": "P2882366",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Stephen Todd Chabak, P.T.
• Elsamma Chacko, MD
• Amy Chai, MD
• Joy E Chance
• Hana Chang, LCSW
• Change Inc
• Change, Inc
• Clara Fellows Chapman, PH.D.
• Sherie L Chapman, LCSW
• John Chardavoyne, MD

• Urology Physician in Middletown, CT
• Providers in Middletown, CT by specialty
• Urology Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 5, 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.