Mary C. Feider, M.D.
Internal Medicine Physician · Madison, WI
Mary C. Feider, M.D. is an internal medicine physician with a practice address in Madison, Wisconsin, and NPI 1376591537, issued on May 4, 2006. Check the license (Wisconsin 1700, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mary C. Feider
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 1700 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Overlook Ter, Madison, WI 53705
- Phone
- (608) 256-1901
- Enumerated
- May 4, 2006
- Record last updated
- Mar 31, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2500 Overlook Ter
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aya AboualaywiPharmacist1639916943
- Lynn Acosta, PHARMDPharmacist1851496509
- Blaire Adkins, DNPAdult Health Nurse Practitioner1174003164
- Jordyn AdlerCase Management Registered Nurse1538023387
- Tamara Adler, RPHPharmacist1508101122
Verify Mary C. Feider in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 1700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
98 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole16 claims
- Furosemide11 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.
Mary C. Feider among 2,078 internal medicine physician records in Wisconsin
Mary C. Feider, M.D. is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
417 internal medicine physician records list a practice address in Madison
They are 417 of the 15,014 NPPES records with a practice address in Madison, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Madison → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joan Addington-White, MDMadison, WI 537051730142670
- Thomas Ansfield, M.D.Madison, WI 537051700848538
- Richard Dewitt, MDMadison, WI 537051386611010
- John Ewalt, M.D.Madison, WI 537051518923283
- Michael Goldrosen, M.D.Madison, WI 537051952363541
- K Hla, MDMadison, WI 537051720054745
- Thomas Hyzer, M.D.Madison, WI 537051174586499
- Lisa Kaufman, MDMadison, WI 537051306828785
Common questions
What is Mary C. Feider, M.D.'s NPI number?
Mary C. Feider, M.D.'s National Provider Identifier (NPI) is 1376591537, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary C. Feider, M.D. located?
The NPPES record lists a practice address at 2500 Overlook Ter, Madison, WI, 53705. Phone: (608) 256-1901. Providers update this record themselves, so call before visiting.
How can I verify Mary C. Feider, M.D.'s license?
NPPES lists Wisconsin license number 1700, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary C. Feider, M.D. prescribe under Medicare Part D?
In 2024, Mary C. Feider, M.D. had 98 Medicare Part D claims for 11 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.