Karen Joan Ludwig, FNP
Family Nurse Practitioner · Brunswick, ME
Karen Joan Ludwig, FNP is a family nurse practitioner with a practice address in Brunswick, Maine, and NPI 1659530418, issued on Jun 6, 2008. Check the license (Maine R052936, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Joan Ludwig
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R052936 ME
Self-reported in NPPES; status is on the state search - Practice location
- 22 Station Ave, Brunswick, ME 04011
- Phone
- (207) 373-6848
- Enumerated
- Jun 6, 2008
- Record last updated
- Jun 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (207) 373-6849
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,274 in Maine → Look up another NPI →
Also registered at 22 Station Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Natalie Dewalt, FNP-CFamily Nurse Practitioner1740045848
- Tiffany Eisenhauer, PA-CMedical Physician Assistant1881091387
- Nicole Higgins, APRNNurse Practitioner1396336699
- Allan Kaplan, MDFamily Medicine Physician1639194376
Verify Karen Joan Ludwig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license R052936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
22 Medicare Part D claims for 16 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Karen Joan Ludwig among 1,274 family nurse practitioner records in Maine
Karen Joan Ludwig, FNP is one of 1,274 family nurse practitioner records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 24% of them.
- NPI issued2008 · 24% of these records are older, 73% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2015 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 family nurse practitioner records list a practice address in Brunswick
They are 45 of the 981 NPPES records with a practice address in Brunswick, and 1,274 family nurse practitioner records in Maine.
All 1,274 in Maine → Every provider in Brunswick → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Robin Beltramini, FNPBrunswick, ME 040111891803193
- Jamie-Eve BullockBrunswick, ME 040111912346958
- Patricia Cyr, RN MS ANPC FNPCBrunswick, ME 040111578648242
- Francine Dalfonso, FNPBrunswick, ME 040111023064953
- Linda Kelly, FNPBrunswick, ME 040111063790285
- Marian Laroche, FNP-CBrunswick, ME 040111396723540
- Elizabeth Phillips, F.N.P.Brunswick, ME 040111356615637
- Katharine Potter, MSN, NP-CBrunswick, ME 040111821377466
Common questions
What is Karen Joan Ludwig, FNP's NPI number?
Karen Joan Ludwig, FNP's National Provider Identifier (NPI) is 1659530418, issued on Jun 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Karen Joan Ludwig, FNP located?
The NPPES record lists a practice address at 22 Station Ave, Brunswick, ME, 04011. Phone: (207) 373-6848. Providers update this record themselves, so call before visiting.
How can I verify Karen Joan Ludwig, FNP's license?
NPPES lists Maine license number R052936, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Joan Ludwig, FNP prescribe under Medicare Part D?
In 2024, Karen Joan Ludwig, FNP had 22 Medicare Part D claims for 16 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Karen Joan Ludwig, FNP's MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.