DR. AARON SAMUEL RATNER DO, MS
NPI 1063708766
Emergency Medicine in Farmington, ME
About Dr. Aaron Samuel Ratner Do, Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AARON SAMUEL RATNER DO, MS (NPI 1063708766) is an individual emergency medicine provider in Farmington, Maine, licensed in Pennsylvania (OS016425) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Northern Light Eastern Maine Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Aaron Samuel Ratner Do, Ms is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
20Medicare enrollment records show Aaron Ratner reassigns Medicare billing to 20 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Farmington, ME 04938
- Reassigned Medicare billing, Maine enrollment
- Also billed through NPI 1922791417 (Maine)
- 3,140 clinicians in this Medicare group
Brunswick, ME 04011
- Reassigned Medicare billing, Maine enrollment
- 170 clinicians in this Medicare group
Bangor, ME 04401
- Reassigned Medicare billing, Maine enrollment
- 788 clinicians in this Medicare group
Ellsworth, ME 04605
- Reassigned Medicare billing, Maine enrollment
- 167 clinicians in this Medicare group
Caribou, ME 04736
- Reassigned Medicare billing, Maine enrollment
- 110 clinicians in this Medicare group
Honesdale, PA 18431
- Reassigned Medicare billing, Pennsylvania enrollment
- 104 clinicians in this Medicare group
Honesdale, PA 18431
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Carbondale, PA 18407
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,895 clinicians in this Medicare group
East Stroudsburg, PA 18301
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: St Lukes Physician Group Inc
- 2,851 clinicians in this Medicare group
Milton, PA 17847
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northern Light Eastern Maine Medical Center
Acute Care Hospitals · Bangor, MEUpmc Carlisle
Acute Care Hospitals · Carlisle, PALehigh Valley Hospital - Dickson City
Acute Care Hospitals · Dickson City, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04938 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FARMINGTON, ME 04938
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Aaron Ratner's NPI number?
The NPI number for Aaron Ratner is 1063708766. It was assigned to this individual provider in the NPPES registry on June 22, 2011.
Where is Aaron Ratner located?
Aaron Ratner practices at 111 Franklin Health Cmns, Farmington, ME 04938. The listed phone number is (207) 778-6031.
What is Aaron Ratner's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Aaron Ratner enrolled in Medicare?
Yes. Aaron Ratner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Aaron Ratner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Ratner reassigns Medicare benefits to 20 organizations: Mainehealth (Farmington, ME), Bluewater Emergency Partners Of Brunswick, LLC (Brunswick, ME), Eastern Maine Medical Center (Bangor, ME), Emergency Medicine Services Of Maine, LLC (Ellsworth, ME), City Of Caribou (Caribou, ME) and 15 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Ratner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aaron Ratner accept?
Health plans from Taro Health and WellSense Health Plan list Aaron Ratner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Aaron Ratner affiliated with any hospitals?
According to CMS data, Aaron Ratner is affiliated with Northern Light Eastern Maine Medical Center, Upmc Carlisle and Lehigh Valley Hospital - Dickson City.
When was this NPI record last updated?
The NPPES record for Aaron Ratner was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Aaron Samuel Ratner, DO, MS · NPI 1063708766
Emergency Medicine physician in Farmington, Maine. Individual provider, active in the CMS NPPES registry since June 22, 2011.
## Identity
- **NPI:** 1063708766 (Entity type: Individual)
- **Enumerated:** June 22, 2011
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** OS016425 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 FRANKLIN HEALTH CMNS, Farmington, ME 04938-6144
- **Phone:** (207) 778-6031 · **Fax:** (207) 779-2632
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 20 organizations under Medicare reassignment (form CMS-855R): Mainehealth (NPI 1609356419, Farmington, ME); Bluewater Emergency Partners Of Brunswick, LLC (NPI 1043640204, Brunswick, ME); Eastern Maine Medical Center (NPI 1790789147, Bangor, ME); Emergency Medicine Services Of Maine, LLC (NPI 1578032058, Ellsworth, ME); City Of Caribou (NPI 1780615492, Caribou, ME); and 15 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Philadelphia College Of Osteopathic Medicine, class of 2011
## Record status
- **NPPES last updated:** September 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1063708766) · Data from the CMS NPPES public registry.