Zachary McLean Oswald, O.D.
Optometrist · Dillon, MT
Zachary McLean Oswald, O.D. is an optometrist with a practice address in Dillon, Montana, and NPI 1275810079, issued on Nov 8, 2011. Check the license (Montana OPT-OPT-LIC-3096, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Zachary McLean Oswald
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- OPT-OPT-LIC-3096 MT
ODP-100231 ID
3437ATI OR
9885098-9934 UT
Self-reported in NPPES; status is on the state search - Practice location
- 25 Johnson Ave, Dillon, MT 59725
- Phone
- (406) 683-2020
- Enumerated
- Nov 8, 2011
- Record last updated
- Mar 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (406) 683-6409
- Medicare enrollment
- Enrolled (PECOS I20180712003433); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 245 in Montana → Look up another NPI →
Also registered at 25 Johnson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bradley Kepp, O.D.Optometrist1982786042
Verify Zachary McLean Oswald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license OPT-OPT-LIC-3096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average optometrist in 2024
338 Medicare Part D claims for 102 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Latanoprost101 claims
- Dorzolamide-Timolol50 claims
- Neomycin-Polymyxin-Dexameth43 claims
- Timolol Maleate37 claims
- Lumigan18 claims
- Prednisolone Acetate13 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 MIPS final score for 2023 (Medicare payment program): 93.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.26
1 payment: 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Zachary McLean Oswald among 245 optometrist records in Montana
Zachary McLean Oswald, O.D. is one of 245 optometrist records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 68% of them.
- NPI issued2011 · 68% of these records are older, 31% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2011 · median 2008 among the 160 with a school on file
- Record last updated2020 · 61% 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 Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 optometrist records list a practice address in Dillon
They are 4 of the 142 NPPES records with a practice address in Dillon, and 245 optometrist records in Montana.
All 245 in Montana → Every provider in Dillon → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Douglas Creger, ODDillon, MT 597251750580361
- John Creger, O.D.Dillon, MT 597251720330053
- Bradley Kepp, O.D.Dillon, MT 597251982786042
- Haley Owens, O.D.Deer Lodge, MT 597221134672751
- Shannon CurrierBozeman, MT 597181982980090
- Julia Dunnavant, ODBozeman, MT 597181467826768
- Callie Harberts, O.D.Bozeman, MT 597181427212380
- Jennipher Harper, O.D.Bozeman, MT 597181407181068
Common questions
What is Zachary McLean Oswald, O.D.'s NPI number?
Zachary McLean Oswald, O.D.'s National Provider Identifier (NPI) is 1275810079, issued on Nov 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Zachary McLean Oswald, O.D. located?
The NPPES record lists a practice address at 25 Johnson Ave, Dillon, MT, 59725. Phone: (406) 683-2020. Providers update this record themselves, so call before visiting.
How can I verify Zachary McLean Oswald, O.D.'s license?
NPPES lists Montana license number OPT-OPT-LIC-3096, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Zachary McLean Oswald, O.D. prescribe under Medicare Part D?
In 2024, Zachary McLean Oswald, O.D. had 338 Medicare Part D claims for 102 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Zachary McLean Oswald, O.D.'s MIPS final score?
The 2023 MIPS final score is 93.7 of 100. 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.