Aaron Samuel Ratner, DO, MS

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

OS016425 Issued in PA

Practice address

111 Franklin Health CMNS
Farmington, ME 04938-6144

Phone

(207) 778-6031

Fax

(207) 779-2632

NPI assigned

Jun 22, 2011

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Enrolled in PA, ME2 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

Specialty

Emergency Medicine

Education

Philadelphia College of Osteopathic Medicine, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Pinnacle Health Emergency Department Services, LLCGroup PAC ID 0143124701, 106 clinicians

Emergency Physician Associates of Pennsylvania PCGroup PAC ID 5597663252, 88 clinicians

Eastern Maine Medical CenterGroup PAC ID 2062315161, 659 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Upmc Carlisle Hospital, Carlisle, PA, CCN 390058
• Christiana Hospital Hospital, Newark, DE, CCN 080001
• Lehigh Valley Hospital - Dickson City Hospital, Dickson City, PA, CCN 390338
• Mainehealth Franklin Hospital Hospital, Farmington, ME, CCN 201316
• Wayne Memorial Hospital Hospital, Honesdale, PA, CCN 390125

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy, Master of Science

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: aratner28323@direct2.lvhn.org

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.

• Emergency Physician Associates of Pennsylvania, PC

  • Emergency Medicine Physician
  • Hanover, PA
  • NPI 1619990900
  Medicare reassignment Care Compare group NPD
• Pinnacle Health Emergency Department Services LLC

  • Emergency Medicine Physician
  • Harrisburg, PA
  • NPI 1487693404
  Medicare reassignment Care Compare group NPD
• Eastern Maine Medical Center

  • General Acute Care Hospital
  • Bangor, ME
  • NPI 1790789147
  Medicare reassignment Care Compare group
• Bluewater Emergency Partners of Brunswick, LLC

  • Emergency Medicine Physician
  • Brunswick, ME
  • NPI 1043640204
  Medicare reassignment NPD
• Emergency Medicine Services of Maine, LLC

  • Emergency Medicine Physician
  • Ellsworth, ME
  • NPI 1578032058
  Medicare reassignment NPD
• Mainehealth

  • Psychiatric Hospital
  • Westbrook, ME
  • NPI 1790265502
  Medicare reassignment NPD
• Mainehealth

  • Critical Access Hospital
  • Farmington, ME
  • NPI 1922791417
  Medicare reassignment NPD
• Ahn Emergency Group of Pittsburgh LTD.

  • Emergency Medicine Physician
  • Pittsburgh, PA
  • NPI 1043635402
  Medicare reassignment NPD
• Geisinger Clinic

  • Family Medicine Physician
  • Danville, PA
  • NPI 1366493868
  Medicare reassignment NPD
• St. Luke'S Physician Group, Inc.

  • Family Medicine Physician
  • Bethlehem, PA
  • NPI 1700984622
  Medicare reassignment NPD
• Upmc Altoona

  • General Acute Care Hospital
  • Altoona, PA
  • NPI 1497831655
  Medicare reassignment NPD
• Wayne Memorial Hospital

  • General Acute Care Hospital
  • Honesdale, PA
  • NPI 1124026182
  Medicare reassignment NPD

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

• Mainehealth

  • Critical Access Hospital
  • Farmington, ME
  • NPI 1922791417
  Care Compare affiliation
• Christiana Care Health Services, Inc.

  • General Acute Care Hospital
  • Wilmington, DE
  • NPI 1134194038
  Care Compare affiliation
• Lehigh Valley Hospital- Pocono

  • General Acute Care Hospital
  • Dickson City, PA
  • NPI 1396402053
  Care Compare affiliation
• Upmc Carlisle

  • General Acute Care Hospital
  • Carlisle, PA
  • NPI 1689107328
  Care Compare affiliation
• Upmc Carlisle

  • Ambulatory Surgical Clinic/Center
  • Carlisle, PA
  • NPI 1972038826

  Hospital

  Care Compare affiliation
• Wayne Memorial Hospital

  • General Acute Care Hospital
  • Honesdale, PA
  • NPI 1124026182
  Care Compare affiliation

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

{
    "created_epoch": "1308700800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786492800000",
    "number": "1063708766",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2100 MACK BLVD FL 4",
            "city": "ALLENTOWN",
            "state": "PA",
            "postal_code": "181035622",
            "telephone_number": "484-884-4500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "111 FRANKLIN HEALTH CMNS",
            "city": "FARMINGTON",
            "state": "ME",
            "postal_code": "049386144",
            "telephone_number": "207-778-6031",
            "fax_number": "207-779-2632"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "14781 Wolfe Rd",
            "address_purpose": "LOCATION",
            "city": "New Freedom",
            "state": "PA",
            "postal_code": "173499571",
            "country_code": "US",
            "telephone_number": "717-326-1880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4755 Ogletown Stanton Rd",
            "address_purpose": "LOCATION",
            "city": "Newark",
            "state": "DE",
            "postal_code": "197182200",
            "country_code": "US",
            "telephone_number": "302-733-1806",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "36 Robinhood Dr",
            "address_purpose": "LOCATION",
            "city": "Etters",
            "state": "PA",
            "postal_code": "173199528",
            "country_code": "US",
            "telephone_number": "717-388-7300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1201 Letort Springs Way",
            "address_purpose": "LOCATION",
            "city": "Carlisle",
            "state": "PA",
            "postal_code": "170158011",
            "country_code": "US",
            "telephone_number": "717-674-7600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1200 S Cedar Crest Blvd",
            "address_purpose": "LOCATION",
            "city": "Allentown",
            "state": "PA",
            "postal_code": "181036202",
            "country_code": "US",
            "telephone_number": "484-862-3232",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "100 Hospital Ave",
            "address_purpose": "LOCATION",
            "city": "Du Bois",
            "state": "PA",
            "postal_code": "158011440",
            "country_code": "US",
            "telephone_number": "814-371-2200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RATNER",
        "first_name": "AARON",
        "middle_name": "SAMUEL",
        "name_prefix": "Dr.",
        "credential": "DO, MS",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2011-06-22",
        "last_updated": "2026-08-12",
        "certification_date": "2026-08-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "PA",
            "license": "OT014189",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "ME",
            "license": "DO3925",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "PA",
            "license": "OS016425",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "DE",
            "license": "C2-0024945",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "ME",
            "license": "LT4005",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Reichert Holdings, LLC
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• Emergency Medicine Physician in Farmington, ME
• Providers in Farmington, ME by specialty
• Emergency Medicine Physician in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 12, 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.