Thomas J. Oregan, MD
Anesthesiology Physician · Neenah, WI
Thomas J. Oregan, MD is an anesthesiology physician with a practice address in Neenah, Wisconsin, and NPI 1710975453, issued on Oct 6, 2005. Check the license (Wisconsin 18759-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas J. Oregan
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 18759-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 130 2ND St, Neenah, WI 54956
- Phone
- (920) 729-3332
- Enumerated
- Oct 6, 2005
- Record last updated
- Oct 31, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,313 in Wisconsin → Look up another NPI →
Also registered at 130 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Abitz, RD, CDRegistered Dietitian1801011127
- Katelyn Algas, MSOT, OTR/LOccupational Therapist1528673555
- Nicholas AndersonPediatrics Physician1366976409
- Robert Anderson, M.D.Anesthesiology Physician1679672638
- Roshani AryalStudent in an Organized Health Care Education/Training Program1972426435
- Crystal Bales, DNP, RN, CPNPPediatric Nurse Practitioner1376094664
Verify Thomas J. Oregan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 18759-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
15 Medicare Part D claims, against an average of 402 among the 4,319 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.
Thomas J. Oregan among 1,313 anesthesiology physician records in Wisconsin
Thomas J. Oregan, MD is one of 1,313 anesthesiology physician records with a practice address in Wisconsin. 72% 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, 80% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 anesthesiology physician records list a practice address in Neenah
They are 16 of the 919 NPPES records with a practice address in Neenah, and 1,313 anesthesiology physician records in Wisconsin.
All 1,313 in Wisconsin → Every provider in Neenah → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Robert Anderson, M.D.Neenah, WI 549561679672638
- Scott Behrens, MDNeenah, WI 549561760479737
- Jerome Bormes, MDNeenah, WI 549561477540631
- Man Choi, MDNeenah, WI 549561538157250
- Angie Geiger, M.D.Neenah, WI 549561841639598
- Robin Goldsmith, MDNeenah, WI 549561962490680
- Frederick Groutage, M.D.Neenah, WI 549561336312537
- John Kidd, MDNeenah, WI 549561538157201
Common questions
What is Thomas J. Oregan, MD's NPI number?
Thomas J. Oregan, MD's National Provider Identifier (NPI) is 1710975453, issued on Oct 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. Oregan, MD located?
The NPPES record lists a practice address at 130 2ND St, Neenah, WI, 54956. Phone: (920) 729-3332. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. Oregan, MD's license?
NPPES lists Wisconsin license number 18759-020, 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 Thomas J. Oregan, MD prescribe under Medicare Part D?
In 2024, Thomas J. Oregan, MD had 15 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.