Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Koelker, APRN

Family Nurse Practitioner in Rochester, NH · enumerated 2022.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1255083879

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alyssa Koelker

Credential APRN

Sex Female

Practice address 11 Whitehall Rd, Rochester, NH, 03867

Phone (603) 994-7600

Enumeration date Jan 25, 2022

Last updated in NPPES Oct 31, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 087022-23 (NH) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
3133537	Medicaid	NH	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Alyssa Koelker practice?

The practice location on file with NPPES is in Rochester, NH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alyssa Koelker?

The National Provider Identifier (NPI) for Alyssa Koelker is 1255083879, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-31.