Michael D. Caldwell, MD
Surgery Physician · Marshfield, WI
Michael D. Caldwell, MD is a surgery physician with a practice address in Marshfield, Wisconsin, and NPI 1184724858, issued on Sep 23, 2006. Check the license (Wisconsin 41921, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael D. Caldwell
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 41921 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 387-5511
- Enumerated
- Sep 23, 2006
- Record last updated
- Nov 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- APPR WI
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 726 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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- Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574
Verify Michael D. Caldwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 41921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $18.80
1 payment: food and beverage; the largest payer was Cook Medical LLC. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Michael D. Caldwell among 726 surgery physician records in Wisconsin
Michael D. Caldwell, MD is one of 726 surgery 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 52% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2011 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Wisconsin
There are 726 surgery physician records in Wisconsin.
All 726 in Wisconsin → Every provider in Marshfield → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Stephanie Carr, DOMarshfield, WI 544491992159800
- Samariah Conway, MDMarshfield, WI 544491225667199
- Robert Kolts, MDMarshfield, WI 544491215031323
- Shameem Kunhammed, MDMarshfield, WI 544491306077284
- Eberhard Mack, MDMarshfield, WI 544491831154467
- Charles McGill, MDMarshfield, WI 544491558465666
- Vijaya Nirujogi, M.D.Marshfield, WI 544491427068212
- Jane Ohde, DOMarshfield, WI 544491164805560
Common questions
What is Michael D. Caldwell, MD's NPI number?
Michael D. Caldwell, MD's National Provider Identifier (NPI) is 1184724858, issued on Sep 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael D. Caldwell, MD located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5511. Providers update this record themselves, so call before visiting.
How can I verify Michael D. Caldwell, MD's license?
NPPES lists Wisconsin license number 41921, 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. 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.