DR. MARC D. EISEN M.D.
NPI 1649345513
Otolaryngology - Otology & Neurotology in Farmington, CT
About Dr. Marc D. Eisen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARC D. EISEN M.D. (NPI 1649345513) is an individual otology & neurotology provider in Farmington, Connecticut, licensed in Connecticut (045054) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2000).
NPPES Registry Identity
Specialties & Licenses
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. Marc D. Eisen M.d. 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
2Medicare enrollment records show Marc Eisen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Farmington, CT 06032
- Reassigned Medicare billing, Connecticut enrollment
- 5 clinicians in this Medicare group
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- Also billed through NPI 1770696643 (Connecticut)
- 1,333 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 12
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FARMINGTON, CT 06032
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 Marc Eisen's NPI number?
The NPI number for Marc Eisen is 1649345513. It was assigned to this individual provider in the NPPES registry on November 23, 2006.
Where is Marc Eisen located?
Marc Eisen practices at 40 Stanford Dr, Farmington, CT 06032. The listed phone number is (860) 640-4455.
What is Marc Eisen's specialty?
The primary specialty registered for this NPI is Otolaryngology, specializing in Otology & Neurotology, with taxonomy code 207YX0901X.
Is Marc Eisen enrolled in Medicare?
Yes. Marc Eisen 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 Marc Eisen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marc Eisen reassigns Medicare benefits to 2 organizations: Ear Specialty Group Of Connecticut PC (Farmington, CT) and Hartford Hospital (Hartford, CT). 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 Marc Eisen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marc Eisen accept?
Health plans from Anthem Blue Cross and Blue Shield list Marc Eisen 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.
When was this NPI record last updated?
The NPPES record for Marc Eisen was last updated on November 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.