William Kellar Winkelmeyer, M.D.
Nephrology Physician · Columbia, MO
William Kellar Winkelmeyer, M.D. is a nephrology physician with a practice address in Columbia, Missouri, and NPI 1316943475, issued on Jun 23, 2005. Check the license (Missouri 36326, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- William Kellar Winkelmeyer
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 36326 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1205 W Broadway, Columbia, MO 65203
- Phone
- (573) 499-0642
- Enumerated
- Jun 23, 2005
- Record last updated
- Oct 5, 2022
- Fax
- (573) 449-1787
- Medicaid ID
- 201823911 MO
- Medicare enrollment
- Enrolled (PECOS I20090317000632); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 285 in Missouri → Look up another NPI →
Also registered at 1205 W Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Blake Brooks, M.D.Nephrology Physician1255337390
- Leslie Hamlett, DONephrology Physician1720012628
- Leslie Prosser, FNP-CNurse Practitioner1609186477
- Christopher Schiavo, M.D.Internal Medicine Physician1700268133
- Myra Watson, D.O.Nephrology Physician1366448425
- Blake Welschmeyer, D.O.Internal Medicine Physician1154771178
Verify William Kellar Winkelmeyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 36326Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average nephrology physician in 2024
7,458 Medicare Part D claims for 620 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 117 claims were for opioids.
Most prescribed
- Torsemide919 claims
- Amlodipine Besylate600 claims
- Losartan Potassium473 claims
- Atorvastatin Calcium462 claims
- Lisinopril354 claims
- Indapamide244 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 MIPS final score for 2023 (Medicare payment program): 70.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $22.52
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Nephrology And Hypertension AssociatesColumbia, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Kellar Winkelmeyer among 285 nephrology physician records in Missouri
William Kellar Winkelmeyer, M.D. is one of 285 nephrology physician records with a practice address in Missouri. 85% 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, 92% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1981 · median 2000 among the 212 with a school on file
- Record last updated2022 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Missouri
There are 285 nephrology physician records in Missouri.
All 285 in Missouri → Every provider in Columbia → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Blake Brooks, M.D.Columbia, MO 652031255337390
- Leslie Hamlett, DOColumbia, MO 652031720012628
- Sunder Lal, M.D.Columbia, MO 652031801970785
- Linh Le, MDColumbia, MO 652031992749808
- Myra Watson, D.O.Columbia, MO 652031366448425
- Kimberly Jamison, MDColumbia, MO 652011568547180
- Ikenna Ogbonna, MDColumbia, MO 652011679495428
- Garry Reams, M.D.Columbia, MO 652011285660431
Common questions
What is William Kellar Winkelmeyer, M.D.'s NPI number?
William Kellar Winkelmeyer, M.D.'s National Provider Identifier (NPI) is 1316943475, issued on Jun 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Kellar Winkelmeyer, M.D. located?
The NPPES record lists a practice address at 1205 W Broadway, Columbia, MO, 65203. Phone: (573) 499-0642. Providers update this record themselves, so call before visiting.
How can I verify William Kellar Winkelmeyer, M.D.'s license?
NPPES lists Missouri license number 36326, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Kellar Winkelmeyer, M.D. prescribe under Medicare Part D?
In 2024, William Kellar Winkelmeyer, M.D. had 7,458 Medicare Part D claims for 620 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is William Kellar Winkelmeyer, M.D.'s MIPS final score?
The 2023 MIPS final score is 70.2 of 100. 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.