Dr. Thomas A. Castillo, DO
- Medicare services, 2024
- 320
- Medicare patients, 2024
- 169
- Part D claims, 2024
- 765
- MIPS score, 2024
- 79
- Industry payments
- $180
- Practice address
- 240 Corporate Dr, Beaver Dam, WI 53916-3115
- Practice phone
- Call (920) 887-1151
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marshfield Medical Center - Beaver Dam Professional Services
Eye care practice · Beaver Dam, Wisconsin
Find Dr. Castillo's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas A. Castillo is an ophthalmologist in Marshfield, Wisconsin
Dr. Castillo practices at Marshfield Medical Center - Beaver Dam Professional Services in Beaver Dam, Wisconsin.
Dr. Castillo's NPI, 1700805454, was assigned on July 19, 2006. Dr. Castillo graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1977. Dr. Castillo holds Wisconsin license 40496.
- NPI
- 1700805454NPI Registry (opens in a new tab)
- NPI enumeration date
- July 19, 2006
- NPI status
- Active
- Practice phone
- (920) 887-1151
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas A. Castillo practices in Beaver Dam and Marshfield
Dr. Castillo's primary practice is Marshfield Medical Center - Beaver Dam Professional Services, at 240 Corporate Dr, Beaver Dam, WI 53916-3115. The practice phone is (920) 887-1151. The NPI Registry lists Dr. Castillo's practice address as 1000 N Oak Ave, Marshfield, WI 54449.
- Marshfield Medical Center - Beaver Dam Professional ServicesPrimary240 Corporate Dr, Beaver Dam, WI 53916-3115Phone(920) 887-1151
- NPI Registry address1000 N Oak Ave, Marshfield, WI 54449 · Wood CountyPhone(920) 887-1151
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Thomas A. Castillo is affiliated with 2 sites of care and 2 medical groups
Dr. Castillo's primary practice is Marshfield Medical Center - Beaver Dam Professional Services in Beaver Dam, Wisconsin. The medical group on file is Marshfield Medical Center-Beaver Dam. Dmand AI also links Dr. Castillo to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas A. Castillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castillo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marshfield Medical Center - Beaver Dam Professional Services | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas A. Castillo is one of 328 ophthalmologists in Wisconsin
Ophthalmology is Dr. Castillo's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Castillo is board certified in ophthalmology by the AOA Board of Ophthalmology and Otolaryngology. Dr. Castillo is licensed in Wisconsin.
Specialties and state licenses
- Ophthalmology, WisconsinPrimary
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Castillo treats.
Ophthalmologists near Dr. Castillo
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas A. Castillo billed Medicare for 320 services in 2024
CMS data shows 320 Medicare services from Dr. Castillo across 6 procedure codes in 2024, for 169 Medicare patients. Medicare paid $9,054 for them. Every service was in an office.
Dr. Castillo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8102024: 17778%
- Tests and treatments
- 2023: 6262024: 14377%
- Surgery
- 2023: 372024: 0100%
Dr. Castillo compared with the Wisconsin median for ophthalmologists, 2024
- Dr. Castillo
- Wisconsin median
- Medicare services
- 320vs 1,16272% below
- Medicare patients
- 169vs 45062% below
- Part D claims
- 671vs 6159% above
Medians across 346 ophthalmologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Castillo's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Castillo?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castillo and other ophthalmologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas A. Castillo treated 169 Medicare patients in 2024, average age 78
CMS counts 169 Medicare patients who saw Dr. Castillo in 2024. The largest group is 75 to 84, with 88 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Castillo's median patient age at 83, with 75% women.
Dr. Castillo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Castillo's Medicare patients by sex, 2024
- Women10260%
- Men6740%
Chronic conditions among Dr. Castillo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis38%
- Chronic kidney disease28%
- Diabetes27%
- Ischemic heart disease21%
- Heart failure20%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 83
Patient panel by sex, all payers
- Women75%
- Men25%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas A. Castillo wrote 765 Medicare Part D claims in 2024
In 2024, Dr. Castillo wrote 765 Medicare Part D claims for 182 patients. 64% of them were for generic drugs. CMS names the drug for 671 of them, across 9 drugs with 11 or more claims each, at $38,624 in total drug cost. In 2023, CMS named 1,221 claims across 20 drugs.
Dr. Castillo's Part D claims by kind of drug, 2024
- Generic491 claims64%
- Brand-name274 claims36%
Dr. Castillo's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,2212024: 67145%
Drugs named by CMS: 9 in 2024, 20 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas A. Castillo scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Castillo for performance year 2024, reported as part of a group.
Dr. Castillo's MIPS scores, performance year 2024
- 79of 100Final score
- 56of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Thomas A. Castillo received $180 in industry payments from 2016 to 2025
CMS Open Payments shows 4 general payments to Dr. Castillo from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 79% of the total. Alcon Laboratories Inc paid the most, $105.
General payments to Dr. Castillo by program year, 2016 to 2025
General payments to Dr. Castillo by kind, 2016 to 2025
- Food and beverage$14379%
- Education$3821%
Companies that paid Dr. Castillo the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas A. Castillo graduated from Chicago College of Osteopathic Medicine at Midwestern University
Dr. Castillo graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1977. Dr. Castillo is a member of AAO and AOA.
- Medical school
- Board certified in ophthalmology
- Board certified in 1982 - 2002
- Board certified in 1980 - 2002
- Board certified in 1997 - 1999
- Board certified in 1998 - 2025
Source: Dmand AI Professional Profile Data
Dr. Thomas A. Castillo accepts plans from 4 insurance carriers
Dr. Castillo is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, HCSC and Molina. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- HCSC
- Molina
- WI State Medicaid
Plan types Dr. Castillo accepts, by number of carriers
- Medicare3
- PPO2
- HMO1
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas A. Castillo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas A. Castillo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas A. Castillo's NPI number?
Dr. Thomas A. Castillo's NPI number is 1700805454. It was assigned on July 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas A. Castillo?
Dr. Thomas A. Castillo is an ophthalmologist in Marshfield, Wisconsin. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Thomas A. Castillo practice?
Dr. Castillo practices at 240 Corporate Dr, Beaver Dam, WI 53916-3115. Dr. Castillo also practices at 1000 N Oak Ave, Marshfield, WI 54449. Dr. Castillo's primary practice is Marshfield Medical Center - Beaver Dam Professional Services in Beaver Dam, Wisconsin. Dmand AI also links Dr. Castillo to 1 group practice or clinic and 1 medical group.
What is Dr. Thomas A. Castillo's office phone number?
The practice phone on file for Dr. Castillo is (920) 887-1151.
What is Dr. Thomas A. Castillo's medical license number?
Dr. Castillo holds Wisconsin license 40496.
What medical group is Dr. Thomas A. Castillo part of?
Dr. Castillo is linked to Marshfield Medical Center-Beaver Dam. Dmand AI links Dr. Castillo to 1 more medical group.
Does Dr. Thomas A. Castillo accept Medicare?
Yes. CMS data shows Dr. Castillo billed Medicare for 320 services in 2024.
What is Dr. Thomas A. Castillo's MIPS score?
Dr. Castillo's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thomas A. Castillo see?
CMS counts 169 Medicare patients who saw Dr. Castillo in 2024, with an average age of 78.
Is Dr. Thomas A. Castillo board certified?
Yes. Dr. Castillo is board certified in ophthalmology by the AOA Board of Ophthalmology and Otolaryngology.
Show 6 more questionsShow fewer questions
What services does Dr. Thomas A. Castillo bill to Medicare?
In 2024, Dr. Castillo's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and eye exam or test (92083).
Where did Dr. Thomas A. Castillo go to medical school?
Dr. Castillo graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1977.
What drugs does Dr. Thomas A. Castillo prescribe most?
In 2024 Medicare Part D data, Dr. Castillo's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Dorzolamide-Timolol.
Has Dr. Thomas A. Castillo received payments from drug or device companies?
CMS Open Payments shows $180 in general payments to Dr. Castillo from 3 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Thomas A. Castillo been practicing?
Dr. Castillo graduated from medical school in 1977, 49 years ago.
What insurance does Dr. Thomas A. Castillo accept?
Dr. Castillo is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, HCSC and Molina. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
Selling to ophthalmology practices?
See ophthalmologists in Wisconsin by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card