NPPES file of Aug 9, 2026

Gary Tremayne, O.D.

Optometrist · Riverton, UT

Gary Tremayne, O.D. is an optometrist with a practice address in Riverton, Utah, and NPI 1720121700, issued on Feb 15, 2007. Check the license (Utah 6029479-9934, as entered in NPPES) with the Utah board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720121700
Name
Gary Tremayne
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
6029479-9934 UT
CO2478 CO
Self-reported in NPPES; status is on the state search
Practice location
1543 W 12600 S Ste 104, Riverton, UT 84065
Phone
(801) 208-0734
Enumerated
Feb 15, 2007
Record last updated
Oct 10, 2025
Fax
(801) 666-2020
Medicare enrollment
Enrolled (PECOS I20090513000435); accepts Medicare assignment
Medical or professional school
Illinois College Of Optometry At Chicago, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Verify Gary Tremayne in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Utah board licenses this profession
    Search for license 6029479-9934
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Utah license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

85% fewer Medicare Part D claims than the average optometrist in 2024

41 Medicare Part D claims for 13 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Gary Tremayne41
  2. Specialty average277

Most prescribed

  1. Latanoprost28 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: $333.14

9 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gary Tremayne$333.14
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Gary Tremayne among 470 optometrist records in Utah

Gary Tremayne, O.D. is one of 470 optometrist records with a practice address in Utah. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.

  • NPI issued2007 · 50% of these records are older, 44% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2005 · median 2008 among the 278 with a school on file
  • Record last updated2025 · 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 152W00000X and a Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

9 optometrist records list a practice address in Riverton

They are 9 of the 758 NPPES records with a practice address in Riverton, and 470 optometrist records in Utah.

The 8 optometrist records with the nearest ZIP codes

  1. Jayson Buhler, ODRiverton, UT 840651497649131
  2. Bret Butterfield, O.D.Riverton, UT 840651417369984
  3. Scott Kowallis, O.D.Roosevelt, UT 840661861487050
  4. Jason Kowallis, ODRoosevelt, UT 840661942561311
  5. Carson Summers, ODRoosevelt, UT 840661780508606
  6. Jon Wilson, O.D.Roosevelt, UT 840661760477731
  7. John Ellison, O.D.Roy, UT 840671376713586
  8. Aaron Hartman, ODRoy, UT 840671922258375

Common questions

What is Gary Tremayne, O.D.'s NPI number?

Gary Tremayne, O.D.'s National Provider Identifier (NPI) is 1720121700, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Gary Tremayne, O.D. located?

The NPPES record lists a practice address at 1543 W 12600 S Ste 104, Riverton, UT, 84065. Phone: (801) 208-0734. Providers update this record themselves, so call before visiting.

How can I verify Gary Tremayne, O.D.'s license?

NPPES lists Utah license number 6029479-9934, as entered by the provider. Search the Utah board that licenses this profession; the NPPES record confirms identity only.

How much does Gary Tremayne, O.D. prescribe under Medicare Part D?

In 2024, Gary Tremayne, O.D. had 41 Medicare Part D claims for 13 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.