Bert C. Callahan, MD
Orthopaedic Surgery Physician · Waupun, WI
Bert C. Callahan, MD is an orthopaedic surgery physician with a practice address in Waupun, Wisconsin, and NPI 1760573927, issued on Sep 27, 2006. Check the license (Wisconsin 29788, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Bert C. Callahan
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 29788 WI
Self-reported in NPPES; status is on the state search - Practice location
- 608 W Brown St, Waupun, WI 53963
- Phone
- (920) 324-6802
- Enumerated
- Sep 27, 2006
- Record last updated
- Jan 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (920) 324-8428
- Medicaid ID
- 32208900 WI
- Medicare enrollment
- Enrolled (PECOS I20050324000107); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →
Also registered at 608 W Brown St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Scott Hansfield, MDObstetrics & Gynecology Physician1982695326
Verify Bert C. Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 29788Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
190 Medicare Part D claims for 83 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 109 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen69 claims
- Tramadol Hcl22 claims
- Sulfamethoxazole-Trimethoprim19 claims
- Oxycodone-Acetaminophen14 claims
- Cefadroxil13 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
- Agnesian Healthcare IncRipon, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bert C. Callahan among 656 orthopaedic surgery physician records in Wisconsin
Bert C. Callahan, MD is one of 656 orthopaedic surgery 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 15% of them.
- NPI issued2006 · 15% of these records are older, 41% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1987 · median 2006 among the 401 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 orthopaedic surgery physician records list a practice address in Waupun
They are 3 of the 131 NPPES records with a practice address in Waupun, and 656 orthopaedic surgery physician records in Wisconsin.
All 656 in Wisconsin → Every provider in Waupun → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Thomas Grossman, M.D.Waupun, WI 539631699749689
- Eric Nelson, MDWaupun, WI 539631164443875
- Gerry Chrabaszcz, MDReedsburg, WI 539591043211063
- Kevin Weber, MDReedsburg, WI 539591386626562
- James Grannell, D.O.Mauston, WI 539481083662019
- John Horan, M.D.Mauston, WI 539481184653081
- Robert Riedle, M.D.Mauston, WI 539481538284963
- Matthew Niesen, M.D.Columbus, WI 539251033349840
Common questions
What is Bert C. Callahan, MD's NPI number?
Bert C. Callahan, MD's National Provider Identifier (NPI) is 1760573927, issued on Sep 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bert C. Callahan, MD located?
The NPPES record lists a practice address at 608 W Brown St, Waupun, WI, 53963. Phone: (920) 324-6802. Providers update this record themselves, so call before visiting.
How can I verify Bert C. Callahan, MD's license?
NPPES lists Wisconsin license number 29788, 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 Bert C. Callahan, MD prescribe under Medicare Part D?
In 2024, Bert C. Callahan, MD had 190 Medicare Part D claims for 83 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.