Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Karen Joan Ludwig, FNP

Individual provider Family Nurse Practitioner · NPI 1659530418

MS. Karen Joan Ludwig, FNP is a Family Nurse Practitioner in Brunswick, Maine. Licensed in Maine. Registered with an NPI since 2008.

Licensed in
ME
In the registry since
2008
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

22 Station Ave Ste 101
Brunswick, ME 04011-2092 Not confirmed with CMS for 11 years — call before visiting
Phone: (207) 373-6848
Fax: (207) 373-6849
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence R052936 (ME)

Record details

NPI number1659530418
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJune 6, 2008
Last updated in NPPESJune 18, 2015

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients18
Services billed 24 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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