Alyssa Koelker, APRN - Medicare Nurse Practitioner in Rochester, NH

Alyssa Koelker, APRN is a medicare enrolled "Nurse Practitioner - Family" in Rochester, New Hampshire. She graduated from nursing school in 2021 and has 3 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Wentworth Douglass Physician Corporation and her current practice location is 11 Whitehall Rd, Rochester, New Hampshire. You can reach out to her office (for appointments etc.) via phone at (603) 994-7600.

Alyssa Koelker is licensed to practice in New Hampshire (license number 087022-23) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1255083879.

Contact Information

Alyssa Koelker, APRN
11 Whitehall Rd,
Rochester, NH 03867-3226
(603) 994-7600
Not Available

Map and Direction




Provider's Profile

Full NameAlyssa Koelker
GenderFemale
SpecialityNurse Practitioner
Experience3 Years
Location11 Whitehall Rd, Rochester, New Hampshire
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Alyssa Koelker graduated from nursing school in 2021
  NPI Data:
  • NPI Number: 1255083879
  • Provider Enumeration Date: 01/25/2022
  • Last Update Date: 10/31/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 3779960620
  • Enrollment ID: I20220513001627

Medical Identifiers

Medical identifiers for Alyssa Koelker such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255083879NPI-NPPES
3133537MedicaidNH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 087022-23 (New Hampshire)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Portsmouth Regional HospitalPortsmouth, NHHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Wentworth Douglass Physician Corporation5496749848369

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. Alyssa Koelker allows following entities to bill medicare on her behalf.
Entity NameWentworth Douglass Physician Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447352430
PECOS PAC ID: 5496749848
Enrollment ID: O20040409000433
Entity NameEmergency Medicine Services Of Nh, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386341444
PECOS PAC ID: 3173988474
Enrollment ID: O20230419002879

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. Alyssa Koelker 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
Alyssa Koelker, APRN
Po Box 774,
North Berwick, ME 03906-0774

Ph: () -
Alyssa Koelker, APRN
11 Whitehall Rd,
Rochester, NH 03867-3226

Ph: (603) 994-7600

Reviews and Comments


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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.