Thomas A. Castillo, DO
Ophthalmology Physician · Beaver Dam, WI
Thomas A. Castillo, DO is an ophthalmology physician with a practice address in Beaver Dam, Wisconsin, and NPI 1700805454, issued on Jul 19, 2006. Check the license (Wisconsin 40496, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas A. Castillo
- Credential
- DO
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 40496 WI
Self-reported in NPPES; status is on the state search - Practice location
- 240 Corporate Drive, Beaver Dam, WI 53916
- Phone
- (920) 887-1151
- Enumerated
- Jul 19, 2006
- Record last updated
- May 1, 2024
- Fax
- (920) 887-3353
- Medicaid ID
- 30088300 WI
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 441 in Wisconsin → Look up another NPI →
Also registered at 240 Corporate Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Hendrix, ODOptometrist1588747547
- Erik Schoff, MDOphthalmology Physician1134101520
- Cory Springstroh, ODOptometrist1639481534
- Jay Wilkins, MDOphthalmology Physician1932125093
Verify Thomas A. Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 40496Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average ophthalmology physician in 2024
765 Medicare Part D claims for 182 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Latanoprost340 claims
- Timolol Maleate103 claims
- Dorzolamide-Timolol96 claims
- Brimonidine Tartrate51 claims
- Dorzolamide Hcl33 claims
- Lumigan15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 75.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Thomas A. Castillo among 441 ophthalmology physician records in Wisconsin
Thomas A. Castillo, DO is one of 441 ophthalmology 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, 38% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2024 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Wisconsin
There are 441 ophthalmology physician records in Wisconsin.
All 441 in Wisconsin → Every provider in Beaver Dam → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Omar Abdelmegid, MDBeaver Dam, WI 539161760943633
- George Davis, MDBeaver Dam, WI 539161053330712
- Erik Schoff, MDBeaver Dam, WI 539161134101520
- Jay Wilkins, MDBeaver Dam, WI 539161932125093
- Gregory SovinskiBaraboo, WI 539131841722451
- Robert Castrovinci, M.D.Portage, WI 539011265428841
- Douglas Bull, M.D.Reedsburg, WI 539591083621544
- Bryce Aul, MDWaupun, WI 539631275020836
Common questions
What is Thomas A. Castillo, DO's NPI number?
Thomas A. Castillo, DO's National Provider Identifier (NPI) is 1700805454, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas A. Castillo, DO located?
The NPPES record lists a practice address at 240 Corporate Drive, Beaver Dam, WI, 53916. Phone: (920) 887-1151. Providers update this record themselves, so call before visiting.
How can I verify Thomas A. Castillo, DO's license?
NPPES lists Wisconsin license number 40496, 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 A. Castillo, DO prescribe under Medicare Part D?
In 2024, Thomas A. Castillo, DO had 765 Medicare Part D claims for 182 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Thomas A. Castillo, DO's MIPS final score?
The 2023 MIPS final score is 75.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.