Carmen Johnston, PA
Physician Assistant · Warsaw, IN
Carmen Johnston, PA is a physician assistant with a practice address in Warsaw, Indiana, and NPI 1437415064, issued on Apr 9, 2012. Check the license (Indiana 10001237A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carmen Johnston
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 10001237A IN
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Provident Dr Ste A, Warsaw, IN 46580
- Phone
- (574) 372-7637
- Enumerated
- Apr 9, 2012
- Record last updated
- Sep 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120419000671); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,419 in Indiana → Look up another NPI →
Also registered at 1500 Provident Dr Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anita Alcorn, FNPFamily Nurse Practitioner1154365880
- Scott Ehmen, MDFamily Medicine Physician1447216965
- Jesse Kooistra, FNPFamily Nurse Practitioner1467251496
- Amie Roberts, FNP-CFamily Nurse Practitioner1528763927
- Lori Young, NPFamily Nurse Practitioner1306867940
Verify Carmen Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 10001237ACheck 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 physician assistant in 2024
18 Medicare Part D claims for 16 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Bills Medicare through one group practice
- Medstat LLCNappanee, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carmen Johnston among 2,419 physician assistant records in Indiana
Carmen Johnston, PA is one of 2,419 physician assistant records with a practice address in Indiana. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 24% of them.
- NPI issued2012 · 24% of these records are older, 74% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2010 · median 2019 among the 1,700 with a school on file
- Record last updated2020 · 25% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 physician assistant records list a practice address in Warsaw
They are 13 of the 607 NPPES records with a practice address in Warsaw, and 2,419 physician assistant records in Indiana.
All 2,419 in Indiana → Every provider in Warsaw → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Jonathan BelsterlingWarsaw, IN 465801750181756
- Brian Crabill, PA-CWarsaw, IN 465801982857264
- Taylor CumminsWarsaw, IN 465801184401978
- Megan Flager, PA-CWarsaw, IN 465801811574692
- Richard Karn, P.A.Warsaw, IN 465801043254741
- Gregory Mellinger, PAWarsaw, IN 465801679763437
- Paige Mueller, PAWarsaw, IN 465801326881541
- Lindsay Sciarra, PAWarsaw, IN 465801063046357
Common questions
What is Carmen Johnston, PA's NPI number?
Carmen Johnston, PA's National Provider Identifier (NPI) is 1437415064, issued on Apr 9, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Carmen Johnston, PA located?
The NPPES record lists a practice address at 1500 Provident Dr Ste A, Warsaw, IN, 46580. Phone: (574) 372-7637. Providers update this record themselves, so call before visiting.
How can I verify Carmen Johnston, PA's license?
NPPES lists Indiana license number 10001237A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Carmen Johnston, PA prescribe under Medicare Part D?
In 2024, Carmen Johnston, PA had 18 Medicare Part D claims for 16 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.