William C. Collyer, M.D.
Urology Physician · Evansville, IN
William C. Collyer, M.D. is a urology physician with a practice address in Evansville, Indiana, and NPI 1225096621, issued on May 3, 2006. Check the license (Indiana 01078796A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- William C. Collyer
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License numbers
- 01078796A IN
2005019860 MO
Self-reported in NPPES; status is on the state search - Practice location
- 421 Chestnut St, Evansville, IN 47713
- Phone
- (812) 426-9855
- Enumerated
- May 3, 2006
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (812) 858-4536
- Medicare enrollment
- Enrolled (PECOS I20170718001030); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest urology physician records → All 304 in Indiana → Look up another NPI →
Also registered at 421 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Anderson, MDInternal Medicine Physician1497821813
- Ankita Bahuva, M.D.Internal Medicine Physician1679886691
Verify William C. Collyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01078796ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average urology physician in 2024
337 Medicare Part D claims for 140 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 11 claims were for opioids.
Most prescribed
- Tamsulosin Hcl155 claims
- Finasteride24 claims
- Gemtesa19 claims
- Dutasteride17 claims
- Ciprofloxacin Hcl16 claims
- Levofloxacin14 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.
Industry payments in 2024: $645.55
25 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 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.
Bills Medicare through one group practice
- Good Samaritan Hospital Physician Services, IncVincennes, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William C. Collyer among 304 urology physician records in Indiana
William C. Collyer, M.D. is one of 304 urology physician records with a practice address in Indiana. 84% 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 21% of them.
- NPI issued2006 · 21% of these records are older, 49% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1999 · median 2004 among the 216 with a school on file
- Record last updated2018 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in Indiana
There are 304 urology physician records in Indiana.
All 304 in Indiana → Every provider in Evansville → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Adam Becker, M.D.Evansville, IN 477131891093456
- Paul Siami, MDEvansville, IN 477131639228513
- Charles Vincent, M.D.Evansville, IN 477131497845283
- Michelle Boger, MDEvansville, IN 477141891967212
- William Fisher, MDEvansville, IN 477141306835814
- Thomas Gadient, M.D.Evansville, IN 477141689678922
- Michael Gallentine, MDEvansville, IN 477141356311583
- Phillip Gilson, MDEvansville, IN 477141619966322
Common questions
What is William C. Collyer, M.D.'s NPI number?
William C. Collyer, M.D.'s National Provider Identifier (NPI) is 1225096621, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William C. Collyer, M.D. located?
The NPPES record lists a practice address at 421 Chestnut St, Evansville, IN, 47713. Phone: (812) 426-9855. Providers update this record themselves, so call before visiting.
How can I verify William C. Collyer, M.D.'s license?
NPPES lists Indiana license number 01078796A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William C. Collyer, M.D. prescribe under Medicare Part D?
In 2024, William C. Collyer, M.D. had 337 Medicare Part D claims for 140 beneficiaries; the average among urology physician prescribers was 1,340. 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.