Individual provider Active NPI

Michael John Naso, M.D.

  • Internal Medicine Physician
  • Shelton, CT
National Provider Identifier
1538423488
Registry record updated May 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
63557 Issued in CT
Practice address
110 Commerce Dr
Shelton, CT 06484-6244
Phone
(203) 929-7331
Fax
(203) 925-0330
NPI assigned
Jun 26, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 15, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Public Health & General Preventive Medicine Physician 2083P0901X 63557 CT
Internal Medicine Physician 207R00000X 63557 CT Primary

Addresses

Primary practice location

110 Commerce Dr
Shelton, CT 06484-6244

Mailing address

67 Maple Ave
Derby, CT 06418-1328
Phone (203) 732-1256

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20190911003102 CT Practitioner - Internal Medicine 2668701947 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Temple University School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Griffin Faculty Physicians IncGroup PAC ID 7618871997, 125 clinicians
Rehabilitation Associates IncGroup PAC ID 8022905322, shared by 2 NPIs, 525 clinicians

Practice addresses (Care Compare)

130 Division St
Derby, CT 06418-1326
Phone (203) 732-1330

555 Bridgeport Ave
Shelton, CT 06484-4749
Phone (203) 922-1773

Hospital & facility affiliations

  • Constellation Home Care Home health agency, Norwalk, CT, CCN 077200
  • Elara Caring Home health agency, Rocky Hill, CT, CCN 077163
  • Griffin Hospital Hospital, Derby, CT, CCN 070031

Merit-based Incentive Payment System (MIPS)

Final score
54.86 of 100Reported as group
Quality
11.77
Promoting interoperability
98
Improvement activities
0
Cost
73.13

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Emergency Physicians of Connecticut PC CurrentSince Jul 1, 2020 Accepting new patients
Griffin Faculty Physicians, Inc. Internal Medicine CurrentSince May 29, 2021 Accepting new patients
Hartford Healthcare Medical Group Specialists, PLLC CurrentSince Oct 1, 2021 Accepting new patients
Bristol Hospital Multi Specialty Group, Inc Internal Medicine CurrentSince Apr 1, 2023 Accepting new patients
Hartford Healthcare Medical Group Specialists LLC CurrentSince Oct 1, 2021 Accepting new patients
The Griffin Hospital PastSince May 18, 2025 Accepting new patients

Locations

2800 Main St
Bridgeport, CT 06606
Phone (203) 386-0366

41 Brewster Rd
Bristol, CT 06010
Phone (800) 585-3000

130 Division St
Derby, CT 06418
Phone (203) 732-1330

67 Maple Ave
Derby, CT 06418
Phone (203) 732-0699

110 Commerce Dr
Shelton, CT 06484
Phone (203) 426-5554

1244 Storrs Rd
Storrs Mansfield, CT 06268
Phone (860) 724-2579

64 Robbins St
Waterbury, CT 06708
Phone (203) 573-7142

Interoperability endpoints

  • Direct secure messaging: michael.naso.1@1323.direct.athenahealth.com
  • Direct secure messaging: michael.naso@xdr.hhchealthdirect.org

Organizations & group practices 6

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1340668800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747267200000",
    "number": "1538423488",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "67 MAPLE AVE",
            "city": "DERBY",
            "state": "CT",
            "postal_code": "064181328",
            "telephone_number": "203-732-1256",
            "fax_number": "203-732-1539"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 COMMERCE DR",
            "city": "SHELTON",
            "state": "CT",
            "postal_code": "064846244",
            "telephone_number": "203-929-7331",
            "fax_number": "203-925-0330"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NASO",
        "first_name": "MICHAEL",
        "middle_name": "JOHN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-26",
        "last_updated": "2025-05-15",
        "certification_date": "2025-05-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2083P0901X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Public Health & General Preventive Medicine",
            "state": "CT",
            "license": "63557",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "63557",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Shelton, CT

Sources for this page

Verify at the official NPI Registry.