Warren W. Olds, MD
Radiation Oncology Physician · Marshfield, WI
Warren W. Olds, MD is a radiation oncology physician with a practice address in Marshfield, Wisconsin, and NPI 1326146606, issued on Sep 20, 2006. Check the license (Wisconsin 34154, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Warren W. Olds
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 34154 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 369-6600
- Enumerated
- Sep 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 31929700 WI
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 1000 N Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ihab Abdalrahman, MDHospitalist Physician1497855134
- Raquel Abengozar Mingorance, MDStudent in an Organized Health Care Education/Training Program1609437755
- Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574
Verify Warren W. Olds in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 34154Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Warren W. Olds among 153 radiation oncology physician records in Wisconsin
Warren W. Olds, MD is one of 153 radiation oncology physician records with a practice address in Wisconsin. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileNo · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2007 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Wisconsin
There are 153 radiation oncology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 153 in Wisconsin → Every provider in Marshfield → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Anderson Bauer, M.D.Marshfield, WI 544491043422207
- Jason Duelge, MDMarshfield, WI 544491326032509
- Leon McNealy, MDMarshfield, WI 544491447294673
- Bevan Ly, MDWeston, WI 544761730405143
- Robert Kohl, DOStevens Point, WI 544821689628901
- Darryl BartonWausau, WI 544011609822774
- Anna Brown, M.D.Wausau, WI 544011972966125
- Andrew Huang, M.D.Wausau, WI 544011679957526
Common questions
What is Warren W. Olds, MD's NPI number?
Warren W. Olds, MD's National Provider Identifier (NPI) is 1326146606, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren W. Olds, MD located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 369-6600. Providers update this record themselves, so call before visiting.
How can I verify Warren W. Olds, MD's license?
NPPES lists Wisconsin license number 34154, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.