William H. Ranum, MD
Family Medicine Physician · Waunakee, WI
William H. Ranum, MD is a family medicine physician with a practice address in Waunakee, Wisconsin, and NPI 1043267172, issued on May 27, 2006. Check the license (Wisconsin 29827-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William H. Ranum
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 29827-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1300 S Century Ave, Waunakee, WI 53597
- Phone
- (608) 849-4315
- Enumerated
- May 27, 2006
- Record last updated
- Jun 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 850-1606
- Medicaid ID
- 1043267172 WI
- Medicare enrollment
- Enrolled (PECOS I20100206000032); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 1300 S Century Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Noelle Dowling, MDFamily Medicine Physician1255372751
- Suzanne Dynneson, APNPNurse Practitioner1306918644
- Katherine Fox, M.D.Sports Medicine (Family Medicine) Physician1942462353
- Mathew Herbst, MDFamily Medicine Physician1811020969
Verify William H. Ranum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 29827-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average family medicine physician in 2024
5,750 Medicare Part D claims for 441 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 142 claims were for opioids.
Most prescribed
- Atorvastatin Calcium355 claims
- Simvastatin228 claims
- Omeprazole214 claims
- Lisinopril203 claims
- Levothyroxine Sodium171 claims
- Hydrochlorothiazide146 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
- Dean Health Systems IncWaunakee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William H. Ranum among 3,765 family medicine physician records in Wisconsin
William H. Ranum, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1987 · median 2007 among the 2,347 with a school on file
- Record last updated2021 · 56% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Waunakee
They are 8 of the 174 NPPES records with a practice address in Waunakee, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Waunakee → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Curtis Bush, MDWaunakee, WI 535971750342051
- Noelle Dowling, MDWaunakee, WI 535971255372751
- Mathew Herbst, MDWaunakee, WI 535971811020969
- Jennie Hounshell, MDWaunakee, WI 535971649249988
- Lucas Kuehn, MDWaunakee, WI 535971609263128
- Melvin Rosen, MDWaunakee, WI 535971619921368
- Trent Thompson, MDWaunakee, WI 535971831144401
- Sreevalli Atluru, MDWindsor, WI 535981528300688
Common questions
What is William H. Ranum, MD's NPI number?
William H. Ranum, MD's National Provider Identifier (NPI) is 1043267172, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William H. Ranum, MD located?
The NPPES record lists a practice address at 1300 S Century Ave, Waunakee, WI, 53597. Phone: (608) 849-4315. Providers update this record themselves, so call before visiting.
How can I verify William H. Ranum, MD's license?
NPPES lists Wisconsin license number 29827-020, 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 William H. Ranum, MD prescribe under Medicare Part D?
In 2024, William H. Ranum, MD had 5,750 Medicare Part D claims for 441 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.