Individual provider Active NPI

Charles M Zacks, MD

  • Ophthalmology Physician
  • Portland, ME
National Provider Identifier
1790781839
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
012866 Issued in ME
Practice address
15 Lowell St
Portland, ME 04102-2748
Phone
(207) 774-8277
Fax
(207) 699-5850
NPI assigned
Jun 23, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X 012866 ME Primary

Addresses

Primary practice location

15 Lowell St
Portland, ME 04102-2748

Mailing address

15 Lowell St
Portland, ME 04102-2748
Phone (207) 774-8277

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
012866MEMDOphthalmology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Maine Eye Center, PA Current Accepting new patients

Locations

15 Lowell St
Portland, ME 04102
Phone (207) 774-8277

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1119484800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1790781839",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 LOWELL ST",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041022748",
            "telephone_number": "207-774-8277",
            "fax_number": "207-699-5850"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15 LOWELL ST",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041022748",
            "telephone_number": "207-774-8277",
            "fax_number": "207-699-5850"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZACKS",
        "first_name": "CHARLES",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-06-23",
        "last_updated": "2025-09-11",
        "certification_date": "2020-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "ME",
            "license": "012866",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, ME

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.