Leo E. Bay, DO
Family Medicine Physician · Ashland, WI
Leo E. Bay, DO is a family medicine physician with a practice address in Ashland, Wisconsin, and NPI 1659752285, issued on Jun 9, 2015. Check the license (Wisconsin 69013-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Leo E. Bay
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 69013-21 WI
125067524 IL
64415 MN
OP60849062 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1615 Maple LN Ste 1, Ashland, WI 54806
- Phone
- (715) 685-7500
- Enumerated
- Jun 9, 2015
- Record last updated
- Dec 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (715) 682-2481
- Medicare enrollment
- Enrolled (PECOS I20181008001804); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2015
- 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 1615 Maple LN Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Barningham, RN, CNPAdult Health Nurse Practitioner1992033773
- Rachel Bebeau, APRN, CNPFamily Nurse Practitioner1992362941
- Charles BertelSurgery Physician1184669517
- Carol BushmanAdult Health Nurse Practitioner1164613527
- Erika Carrier, PA-CMedical Physician Assistant1225409774
- Beret Casey, M.D.Endocrinology, Diabetes & Metabolism Physician1124289483
Verify Leo E. Bay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 69013-21Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average family medicine physician in 2024
3,545 Medicare Part D claims for 309 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 129 claims were for opioids.
Most prescribed
- Atorvastatin Calcium175 claims
- Lisinopril155 claims
- Warfarin Sodium130 claims
- Amlodipine Besylate113 claims
- Metoprolol Succinate106 claims
- Omeprazole101 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
- The Duluth Clinic LtdDuluth, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leo E. Bay among 3,765 family medicine physician records in Wisconsin
Leo E. Bay, DO 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 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · 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).
32 family medicine physician records list a practice address in Ashland
They are 32 of the 366 NPPES records with a practice address in Ashland, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Ashland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mary Anderson, MDAshland, WI 548061972511418
- Thomas Cunningham, MDAshland, WI 548061487605804
- Sharon Hammond, MDAshland, WI 548061962453829
- Sharon Handy, M.D.Ashland, WI 548061841290616
- John IpsenAshland, WI 548061073564126
- Andrew Matheus, MDAshland, WI 548061467460980
- John McCue, MDAshland, WI 548061790736254
- John OujiriAshland, WI 548061447276589
Common questions
What is Leo E. Bay, DO's NPI number?
Leo E. Bay, DO's National Provider Identifier (NPI) is 1659752285, issued on Jun 9, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Leo E. Bay, DO located?
The NPPES record lists a practice address at 1615 Maple LN Ste 1, Ashland, WI, 54806. Phone: (715) 685-7500. Providers update this record themselves, so call before visiting.
How can I verify Leo E. Bay, DO's license?
NPPES lists Wisconsin license number 69013-21, 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 Leo E. Bay, DO prescribe under Medicare Part D?
In 2024, Leo E. Bay, DO had 3,545 Medicare Part D claims for 309 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.