Eric W Eisenberg, MD - Medicare Internal Medicine in Portsmouth, NH

Eric W Eisenberg, MD is a medicare enrolled "Internal Medicine" physician in Portsmouth, New Hampshire. He went to New York University School Of Medicine and graduated in 2000 and has 24 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Mainehealth and his current practice location is 8 Greenleaf Woods Dr, Portsmouth, New Hampshire. You can reach out to his office (for appointments etc.) via phone at (603) 422-8208.

Eric W Eisenberg is licensed to practice in Maine (license number MD24359) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1427171545.

Contact Information

Eric W Eisenberg, MD
8 Greenleaf Woods Dr,
Portsmouth, NH 03801-5454
(603) 422-8208
(603) 422-8218

Map and Direction




Physician's Profile

Full NameEric W Eisenberg
GenderMale
SpecialityInternal Medicine
Experience24 Years
Location8 Greenleaf Woods Dr, Portsmouth, New Hampshire
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Eric W Eisenberg attended and graduated from New York University School Of Medicine in 2000
  NPI Data:
  • NPI Number: 1427171545
  • Provider Enumeration Date: 04/06/2007
  • Last Update Date: 03/26/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 7517059264
  • Enrollment ID: I20210525003316

Medical Identifiers

Medical identifiers for Eric W Eisenberg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1427171545NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 17915 (New Hampshire)Secondary
207R00000XInternal Medicine MD24359 (Maine)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mainehealth Care At HomeSaco, MEHome health agency
Elara CaringKittery, MEHome health agency
Southern Maine Health CareBiddeford, MEHospital
Maine Medical CenterPortland, MEHospital
Frisbie Memorial HospitalRochester, NHHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mainehealth75178605882067

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Eric W Eisenberg allows following entities to bill medicare on his behalf.
Entity NameMainehealth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790265502
PECOS PAC ID: 7517860588
Enrollment ID: O20040701000166

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Eric W Eisenberg is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Eric W Eisenberg, MD
311 Route 108,
Somersworth, NH 03878-1522

Ph: (603) 749-2346
Eric W Eisenberg, MD
8 Greenleaf Woods Dr,
Portsmouth, NH 03801-5454

Ph: (603) 422-8208

Reviews and Comments


Internal Medicine Doctors in Portsmouth, NH

Robert Millstein, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 100 Campus Dr, Suite 12, Portsmouth, NH 03801
Phone: 603-422-8208    Fax: 603-422-8219
Mr. Hanad Omar, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 333 Borthwick Avenue, Portsmouth, NH 03801
Phone: 603-436-5110    
Thomas P Clairmont Jr., MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 330 Borthwick Ave, Suite 205, Portsmouth, NH 03801
Phone: 603-436-6115    Fax: 603-433-5567
Daniel L Davies, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 155 Borthwick Ave, Suite 202w, Portsmouth, NH 03801
Phone: 603-433-8434    Fax: 603-436-6608
Brian Choi, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 333 Borthwick Ave, Portsmouth, NH 03801
Phone: 215-442-5031    
Dr. Sucharit Suresh Joshi, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 875 Greenland Rd, #c-10, Portsmouth, NH 03801
Phone: 603-436-3433    Fax: 603-427-5115
Dr. Michael Casimir Danielski, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 875 Greenland Rd, #c-10, Portsmouth, NH 03801
Phone: 603-436-3433    Fax: 603-427-5115

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.