Individual provider Active NPI

Michael John Grille, M.D.

  • Interventional Pain Medicine Physician
  • Hartford, CT
National Provider Identifier
1659630960
Registry record updated Aug 27, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Interventional Pain Medicine PhysicianTaxonomy code 208VP0014X
License
56807 Issued in CT
Practice address
31 Seymour St Ste 201
Hartford, CT 06106-5521
Phone
(860) 282-4128
NPI assigned
May 7, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 27, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 56807 CT
Pain Medicine (Anesthesiology) Physician 207LP2900X 56807 CT
Interventional Pain Medicine Physician 208VP0014X 56807 CT Primary

Addresses

Primary practice location

31 Seymour St Ste 201
Hartford, CT 06106-5521

Mailing address

99 East River Drive
5TH Floor
East Hartford, CT 06108-7301
Phone (860) 282-4128

Other practice location 1

245 Alvord Park Rd
Torrington, CT 06790-3493
Phone (860) 430-2176

Other practice location 2

435 Lewis Ave Ste 100
Meriden, CT 06451-2101
Phone (203) 694-8414

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
I20171004001090 CT Practitioner - Interventional Pain Management 9537434311 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Interventional Pain Management
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Midstate Medical CenterGroup PAC ID 7416840699, 187 clinicians

Practice addresses (Care Compare)

435 Lewis Ave
Meriden, CT 06451-2101
Phone (203) 694-8200

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
56807CTMDInterventional Pain Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Midstate Medical Center CurrentSince Sep 1, 2025 Accepting new patients
Integrated Anesthesia Associates LLC Anesthesiology CurrentSince Sep 1, 2021 Accepting new patients
Midstate Medical Center Current Accepting new patients
Midstate Medical Center CurrentSince Sep 1, 2025 Accepting new patients
Spine and Pain Institute at Midstate LLC Interventional Pain Medicine Past Accepting new patients

Locations

31 Seymour St
Ste 201
Hartford, CT 06106
Phone (860) 282-4128

80 Seymour St
Hartford, CT 06106
Phone (860) 545-2249

99 E River Dr
Fl 5
Hartford, CT 06108
Phone (860) 282-4022

435 Lewis Ave
Meriden, CT 06451
Phone (203) 284-1340

435 Lewis Ave
Ste 100
Meriden, CT 06451
Phone (203) 694-8414

2 Corporate Dr
Ste 955
Shelton, CT 06484
Phone (203) 929-7375

245 Alvord Park Rd
Torrington, CT 06790
Phone (860) 482-8539

Interoperability endpoints

  • Direct secure messaging: michael.grille@xdr.hhchealthdirect.org

Organizations & group practices 5

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 4

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": "1336348800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756252800000",
    "number": "1659630960",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "99 EAST RIVER DRIVE",
            "address_2": "5TH FLOOR",
            "city": "EAST HARTFORD",
            "state": "CT",
            "postal_code": "061087301",
            "telephone_number": "860-282-4128"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "31 SEYMOUR ST STE 201",
            "city": "HARTFORD",
            "state": "CT",
            "postal_code": "061065521",
            "telephone_number": "860-282-4128"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "245 Alvord Park Rd",
            "address_purpose": "LOCATION",
            "city": "Torrington",
            "state": "CT",
            "postal_code": "067903493",
            "country_code": "US",
            "telephone_number": "860-430-2176",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "435 Lewis Ave Ste 100",
            "address_purpose": "LOCATION",
            "city": "Meriden",
            "state": "CT",
            "postal_code": "064512101",
            "country_code": "US",
            "telephone_number": "203-694-8414",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRILLE",
        "first_name": "MICHAEL",
        "middle_name": "JOHN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-05-07",
        "last_updated": "2025-08-27",
        "certification_date": "2025-08-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CT",
            "license": "56807",
            "primary": false
        },
        {
            "code": "207LP2900X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pain Medicine",
            "state": "CT",
            "license": "56807",
            "primary": false
        },
        {
            "code": "208VP0014X",
            "taxonomy_group": "",
            "desc": "Pain Medicine, Interventional Pain Medicine",
            "state": "CT",
            "license": "56807",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Hartford, CT

Sources for this page

Verify at the official NPI Registry.