Karen S. Lothamer, RN, CNS
Nurse Practitioner · Fort Wayne, IN
Karen S. Lothamer, RN, CNS is a nurse practitioner with a practice address in Fort Wayne, Indiana, and NPI 1699823492, issued on Jan 8, 2007. Check the license (Indiana 70000193A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen S. Lothamer
- Credential
- RN, CNS
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 70000193A IN
Self-reported in NPPES; status is on the state search - Practice location
- 2710 Lake Ave, Fort Wayne, IN 46805
- Phone
- (260) 481-2700
- Enumerated
- Jan 8, 2007
- Record last updated
- Mar 31, 2025
- Fax
- (260) 969-8448
- Medicare enrollment
- Enrolled (PECOS I20070424000668); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 2,582 in Indiana → Look up another NPI →
Also registered at 2710 Lake Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen S. Lothamer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 70000193ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.0 times the Medicare Part D claims of the average nurse practitioner in 2024
4,477 Medicare Part D claims for 453 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Trazodone Hcl304 claims
- Duloxetine Hcl222 claims
- Sertraline Hcl193 claims
- Bupropion Xl189 claims
- Mirtazapine188 claims
- Quetiapine Fumarate181 claims
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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,763.84
118 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Park Center IncFort Wayne, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen S. Lothamer among 2,582 nurse practitioner records in Indiana
Karen S. Lothamer, RN, CNS is one of 2,582 nurse practitioner records with a practice address in Indiana. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 15% of them.
- NPI issued2007 · 15% of these records are older, 80% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2018 among the 1,710 with a school on file
- Record last updated2025 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
524 nurse practitioner records list a practice address in Fort Wayne
They are 524 of the 9,203 NPPES records with a practice address in Fort Wayne, and 2,582 nurse practitioner records in Indiana.
All 2,582 in Indiana → Every provider in Fort Wayne → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Janet Anderson, RN FNPFort Wayne, IN 468051134379688
- Andrew Barchus, N.P.Fort Wayne, IN 468051891098745
- Cynthia Burman, NPFort Wayne, IN 468051730190919
- Janet Casperson, NPFort Wayne, IN 468051326007519
- Norma Driver, NPFort Wayne, IN 468051942290663
- Brandon Johnson, FNP-CFort Wayne, IN 468051417358482
- Marisha Klingenberger, NPFort Wayne, IN 468051093766784
- Magdalena Mannes, NPFort Wayne, IN 468051265819775
Common questions
What is Karen S. Lothamer, RN, CNS's NPI number?
Karen S. Lothamer, RN, CNS's National Provider Identifier (NPI) is 1699823492, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen S. Lothamer, RN, CNS located?
The NPPES record lists a practice address at 2710 Lake Ave, Fort Wayne, IN, 46805. Phone: (260) 481-2700. Providers update this record themselves, so call before visiting.
How can I verify Karen S. Lothamer, RN, CNS's license?
NPPES lists Indiana license number 70000193A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Karen S. Lothamer, RN, CNS prescribe under Medicare Part D?
In 2024, Karen S. Lothamer, RN, CNS had 4,477 Medicare Part D claims for 453 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Karen S. Lothamer, RN, CNS's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.