Mark A. Feldner, MD
Family Medicine Physician · St John, IN
Mark A. Feldner, MD is a family medicine physician with a practice address in St John, Indiana, and NPI 1952300873, issued on Jul 21, 2005. Check the license (Indiana 01035622A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Mark A. Feldner
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01035622A IN
Self-reported in NPPES; status is on the state search - Practice location
- 9660 Wicker Ave, St John, IN 46373
- Phone
- (219) 365-1166
- Enumerated
- Jul 21, 2005
- Record last updated
- Jun 17, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (219) 365-8852
- Medicaid ID
- 100096890 IN
- Medicare enrollment
- Enrolled (PECOS I20100113000901); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 9660 Wicker Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Good, MDFamily Medicine Physician1861491938
- Tasha Harris, MDEmergency Medicine Physician1033150792
- Michael Kovacich, MDFamily Medicine Physician1558363309
- Steven Lubera, DOEmergency Medicine Physician1295862811
- Alonzo Morrissey, MDFamily Medicine Physician1235139023
- Kenneth Reed, DOFamily Medicine Physician1861491805
Verify Mark A. Feldner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01035622ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,062 Medicare Part D claims for 847 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 50 claims were for opioids.
Most prescribed
- Atorvastatin Calcium891 claims
- Amlodipine Besylate511 claims
- Lisinopril466 claims
- Metoprolol Succinate426 claims
- Levothyroxine Sodium359 claims
- Losartan Potassium296 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: $94.07
4 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Community Care Network IncSaint John, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark A. Feldner among 3,506 family medicine physician records in Indiana
Mark A. Feldner, MD is one of 3,506 family medicine physician records with a practice address in Indiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2005 among the 2,196 with a school on file
- Record last updated2010 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in St John
They are 7 of the 21 NPPES records with a practice address in St John, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in St John → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Deschepper, M.D.Saint John, IN 463731871532978
- Dana Elsherif, M.D.Saint John, IN 463731013270024
- Richard Good, MDSt John, IN 463731861491938
- Ganapathi Gottumukkala, M.D.Saint John, IN 463731780683953
- Michael Kovacich, MDSt John, IN 463731558363309
- Alonzo Morrissey, MDSt John, IN 463731235139023
- Bina Parekh, DOSt John, IN 463731558458554
- Shalini Patel, M.D.Saint John, IN 463731598106585
Common questions
What is Mark A. Feldner, MD's NPI number?
Mark A. Feldner, MD's National Provider Identifier (NPI) is 1952300873, issued on Jul 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Feldner, MD located?
The NPPES record lists a practice address at 9660 Wicker Ave, St John, IN, 46373. Phone: (219) 365-1166. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Feldner, MD's license?
NPPES lists Indiana license number 01035622A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark A. Feldner, MD prescribe under Medicare Part D?
In 2024, Mark A. Feldner, MD had 9,062 Medicare Part D claims for 847 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.