Gregory D. Bills, MD
Obstetrics & Gynecology Physician · Madison, WI
Gregory D. Bills, MD is an obstetrics & gynecology physician with a practice address in Madison, Wisconsin, and NPI 1851367940, issued on Feb 27, 2006. Check the license (Wisconsin 33367, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory D. Bills
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 33367 WI
Self-reported in NPPES; status is on the state search - Practice location
- 817 Ondossagon Way, Madison, WI 53719
- Phone
- (608) 833-2261
- Enumerated
- Feb 27, 2006
- Record last updated
- Jul 1, 2024
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 796 in Wisconsin → Look up another NPI →
Verify Gregory D. Bills in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
13 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Gregory D. Bills among 796 obstetrics & gynecology physician records in Wisconsin
Gregory D. Bills, MD is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% 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, 47% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2024 · 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 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Wisconsin
There are 796 obstetrics & gynecology physician records in Wisconsin.
All 796 in Wisconsin → Every provider in Madison → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Brenda Casey, MDMadison, WI 537191669474508
- Karla Dickmeyer, M.D.Madison, WI 537191336104421
- Ashley Durward, MDMadison, WI 537191548656168
- Joel Henry, MDMadison, WI 537191740256767
- Sarah Juza, MDMadison, WI 537191659691301
- Isabel Nellen, DOMadison, WI 537191508220344
- Sherwin Rudman, MDMadison, WI 537191477521516
- Erin Schoenecker, MDMadison, WI 537191548237241
Common questions
What is Gregory D. Bills, MD's NPI number?
Gregory D. Bills, MD's National Provider Identifier (NPI) is 1851367940, issued on Feb 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory D. Bills, MD located?
The NPPES record lists a practice address at 817 Ondossagon Way, Madison, WI, 53719. Phone: (608) 833-2261. Providers update this record themselves, so call before visiting.
How can I verify Gregory D. Bills, MD's license?
NPPES lists Wisconsin license number 33367, 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 Gregory D. Bills, MD prescribe under Medicare Part D?
In 2024, Gregory D. Bills, MD had 13 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.