Individual provider Active NPI

Colin Patrick O'Leary, MD

  • Internal Medicine Physician
  • Boston, MA
National Provider Identifier
1588153456
Registry record updated Jun 17, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
291509 Issued in MA
Practice address
55 Fruit St
Boston, MA 02114-2696
Phone
(617) 724-3874
NPI assigned
May 7, 2018
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 17, 2022

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 291509 MA Primary

Addresses

Primary practice location

55 Fruit St
Boston, MA 02114-2696

Mailing address

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-3874

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA, TX2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20221026003103 MA Practitioner - Internal Medicine 0042565855 Reassigns benefits to 2 organizations
I20250115004090 TX Practitioner - Internal Medicine 0042565855 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Duke University School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Maniilaq AssociationGroup PAC ID 6103881792, 32 clinicians

Practice addresses (Care Compare)

110 Main St
Ambler Clinic
Ambler, AK 99786-0110
Phone (907) 445-2129

436 5TH and Ted Stevens Way
Maniilaq Health Center
Kotzebue, AK 99752-0043
Phone (907) 442-3321

P O Box
Suite 43
Kotzubue, AK 99752-0043

PO Box
Suite 43
Kotzebue, AK 99752-0043

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
291509MAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Rosebud Indian Health Service CurrentSince Oct 24, 2024 Accepting new patients
Maniilaq Association CurrentSince Jun 14, 2025 Accepting new patients
Rosebud Indian Health Service CurrentSince Oct 24, 2024 Accepting new patients
The General Hospital Corporation CurrentSince Sep 1, 2022 Accepting new patients
Massachusetts General Physicians Organization Inc Internal Medicine CurrentSince Sep 1, 2022 Accepting new patients
Maniilaq Association CurrentSince Jun 14, 2025 Accepting new patients

Locations

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

55 Fruit St
Boston, MA 02114

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 12

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": "1525651200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1655424000000",
    "number": "1588153456",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-724-3874"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-724-3874"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'LEARY",
        "first_name": "COLIN",
        "middle_name": "PATRICK",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-05-07",
        "last_updated": "2022-06-17",
        "certification_date": "2022-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "291509",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.