Calvin Butler Yates, O.D.
Optometrist · Merrillville, IN
Calvin Butler Yates, O.D. is an optometrist with a practice address in Merrillville, Indiana, and NPI 1093739971, issued on Jul 26, 2006. Check the license (Indiana 18001647A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Calvin Butler Yates
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 18001647A IN
Self-reported in NPPES; status is on the state search - Practice location
- 141 E 61St Ave, Merrillville, IN 46410
- Phone
- (219) 981-8890
- Enumerated
- Jul 26, 2006
- Record last updated
- Jul 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,578 in Indiana → Look up another NPI →
Verify Calvin Butler Yates in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 18001647ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average optometrist in 2024
41 Medicare Part D claims for 15 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Dorzolamide Hcl18 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.
Calvin Butler Yates among 1,578 optometrist records in Indiana
Calvin Butler Yates, O.D. is one of 1,578 optometrist records with a practice address in Indiana. 73% 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, 53% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2011 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 optometrist records list a practice address in Merrillville
They are 30 of the 1,972 NPPES records with a practice address in Merrillville, and 1,578 optometrist records in Indiana.
All 1,578 in Indiana → Every provider in Merrillville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Mark Allmaras, O.D.Merrillville, IN 464101609842558
- Miklos Balogh, O.D.Merrillville, IN 464101245300060
- Alison Byrne, O.D.Merrillville, IN 464101275650608
- Sara Cubenas, O.D.Merrillville, IN 464101902004989
- Dennis Jahovic, O.D.Merrillville, IN 464101184731812
- Michael Kelley, O.D.Merrillville, IN 464101558324368
- Timothy McGillen, O.D.Merrillville, IN 464101285769133
- Robert Moses, O.D.Merrillville, IN 464101417938010
Common questions
What is Calvin Butler Yates, O.D.'s NPI number?
Calvin Butler Yates, O.D.'s National Provider Identifier (NPI) is 1093739971, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Calvin Butler Yates, O.D. located?
The NPPES record lists a practice address at 141 E 61St Ave, Merrillville, IN, 46410. Phone: (219) 981-8890. Providers update this record themselves, so call before visiting.
How can I verify Calvin Butler Yates, O.D.'s license?
NPPES lists Indiana license number 18001647A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Calvin Butler Yates, O.D. prescribe under Medicare Part D?
In 2024, Calvin Butler Yates, O.D. had 41 Medicare Part D claims for 15 beneficiaries; the average among optometrist prescribers was 277. 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.