Mary Ellen Clark, CFNP
Family Nurse Practitioner · Warren, IN
Mary Ellen Clark, CFNP is a family nurse practitioner with a practice address in Warren, Indiana, and NPI 1891031621, issued on Dec 26, 2012. Check the license (Indiana 71016668A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Clark
- Credential
- CFNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 71016668A IN
66049 ID
CNP-02460 NM
201250210NP OR
Self-reported in NPPES; status is on the state search - Practice location
- 824 Huntington Ave, Warren, IN 46792
- Phone
- (260) 375-2965
- Enumerated
- Dec 26, 2012
- Record last updated
- Oct 7, 2025
- Fax
- (260) 375-2969
- Medicare enrollment
- Enrolled (PECOS I20250922000426); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,867 in Indiana → Look up another NPI →
Also registered at 824 Huntington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victoria Heinen, M.D.Family Medicine Physician1548234438
- Amber McClain, FNP-CFamily Nurse Practitioner1689432114
- Deborah Miller, M.D.Family Medicine Physician1811960396
- Judith Ripperger, PACPhysician Assistant1407071848
Verify Mary Ellen Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 71016668ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,209 Medicare Part D claims for 166 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin59 claims
- Levothyroxine Sodium57 claims
- Losartan Potassium57 claims
- Amlodipine Besylate43 claims
- Lisinopril42 claims
- Atorvastatin Calcium34 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.
Industry payments in 2024: $20.28
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 99,489 providers of this specialty with any payment received $650.95 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
- Meridian Health Services CorpWarren, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ellen Clark among 5,867 family nurse practitioner records in Indiana
Mary Ellen Clark, CFNP is one of 5,867 family nurse practitioner 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 19% of them.
- NPI issued2012 · 19% of these records are older, 78% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2012 · median 2018 among the 3,953 with a school on file
- Record last updated2025 · 33% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family nurse practitioner records list a practice address in Warren
They are 2 of the 33 NPPES records with a practice address in Warren, and 5,867 family nurse practitioner records in Indiana.
All 5,867 in Indiana → Every provider in Warren → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Amber McClain, FNP-CWarren, IN 467921689432114
- Deidra Curry, NPWolcottville, IN 467951851643076
- Mary Gordon, CNPWoodburn, IN 467971649729872
- Ruth Poppele, NURSE PRACTITIONERRoanoke, IN 467831851375364
- Malinda Shelley, NPRoanoke, IN 467831841962669
- Aimee Bell, NP-CFort Wayne, IN 468021841668472
- Ashley Boettcher, NP-CFort Wayne, IN 468021437527892
- Marrisa Culver, APNFort Wayne, IN 468021629680335
Common questions
What is Mary Ellen Clark, CFNP's NPI number?
Mary Ellen Clark, CFNP's National Provider Identifier (NPI) is 1891031621, issued on Dec 26, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Clark, CFNP located?
The NPPES record lists a practice address at 824 Huntington Ave, Warren, IN, 46792. Phone: (260) 375-2965. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Clark, CFNP's license?
NPPES lists Indiana license number 71016668A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ellen Clark, CFNP prescribe under Medicare Part D?
In 2024, Mary Ellen Clark, CFNP had 1,209 Medicare Part D claims for 166 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.