NPI registry status
Active
2026 NPPES data Optometrist NPI 1275810079 O.D.
Verify on CMS → Zachary Oswald, O.D.
Optometrist in Dillon, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 60,484 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
239
Medicare Part D claims · 71 beneficiaries · Optometrist avg: 257
Generic prescribing
55%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.7/100
▲ 11 pts above national avg 83.1 · Exceptional
Industry payments
$15.26
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Zachary Oswald, O.D. reported a CMS MIPS final score of 93.7/100 - above the 83.1 national average - and filed 239 Medicare Part D claims in 2023.
- 93.7/100
- MIPS score · +11 vs avg
- 239
- Part D claims, 2023
- 55%
- generic prescribing
- $15.26
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Zachary Oswald, O.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
94 Top 29% higher than 71% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Zachary Oswald, O.D. sits
This provider among optometrist peers
Across the 6,527 optometrist providers who report both Medicare Part D prescribing and a MIPS quality score, Zachary Oswald, O.D. writes more Part D claims than 37% of them and scores higher on MIPS quality than 74% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one optometrist peer from a representative sample of 60; the gold marker is Zachary Oswald, O.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Zachary Oswald, O.D.?
High performer (top quartile)Primary specialty
Optometrist
Medicare Part D claims
239 7% vs specialty avg
MIPS final score
93.7/100 10.6 pts vs avg
Specialty distribution in Montana
How Optometrist compares to other specialties among Montana providers
Medicare quality performance, MIPS
Zachary Oswald, O.D.'s 2023 MIPS final score plotted against the Optometrist national average
- MIPS Final Score
- 93.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Optometrist) - 93.7/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Zachary Oswald, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 25 JOHNSON AVE, Dillon, MT, 59725, with a listed phone of (406) 683-2020. NPI 1275810079 was issued on 11/08/2011.
Medicare Part D records for calendar year 2023 show 239 prescription claims written by this provider, covering 71 Medicare beneficiaries and totaling roughly $40K in drug spend, split 45% brand-name and 55% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.7/100 for the 2023 performance year (Quality 87.4), compared with the national average of 83.1.
Optometrist is a high-volume specialty nationwide, with 60,484 enrolled providers across 56 states and an average of 257 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1275810079 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 11/08/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
93.7126
Final Score
Avg: 83.1
87.4251
Quality
Reporting: Individual
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Zachary Oswald, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$15
Largest payer
Alcon Vision LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Above average
Zachary Oswald, O.D. - brand share 45.0%
Optometrist average
45% brand-name claims vs 55% generic, on 239 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
239
Total Claims
$40K
Total Drug Cost
71
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 442
- Total Day Supply
- 12,340
- Brand vs Generic
- 45% brand / 55% generic
- Brand Drug Cost
- $36K
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 0.91
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Zachary Oswald, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
63 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
41 claims
- Neomycin-Polymyxin…
Neomycin-Polymyxin-Dexameth
29 claims
- Timolol Maleate
Timolol Maleate
27 claims
- Lumigan 21
Lumigan
21 claims
- Restasis 14
Restasis
14 claims
- Prednisolone Acetate 11
Prednisolone Acetate
11 claims
| Drug | Claims |
|---|---|
| Latanoprost | 63 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 41 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 29 |
| Timolol Maleate | 27 |
| Lumigan Bimatoprost | 21 |
| Restasis Cyclosporine | 14 |
| Prednisolone Acetate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Zachary Oswald, O.D. fits within the Optometrist landscape nationally.
60,484
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider
Zachary Oswald, O.D.'s 239 claims are below the specialty average of 257.
Nearby Optometrist Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Oswald.
Dr. Fred Abraham
OD
Great Falls, MT
Dr. John Anderson
O.D.
Bozeman, MT
Dr. Roger Anderson
OD
Sidney, MT
Dr. Peter Babcock
O.D.
Missoula, MT
Dr. Naomi Barnes
OD
Whitefish, MT
Compare Optometrist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Optometrist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Zachary Oswald, O.D.'s specialty? ▼
Zachary Oswald, O.D. specializes in Optometrist and practices in Dillon, Montana. Credentials: O.D..
How much does Zachary Oswald, O.D. prescribe under Medicare Part D? ▼
In 2023, Zachary Oswald, O.D. wrote 239 Medicare Part D claims totaling $40K in drug costs for 71 beneficiaries.
What is Zachary Oswald, O.D.'s Medicare quality score? ▼
Zachary Oswald, O.D. has a CMS MIPS Final Score of 93.7/100 (Quality: 87.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Zachary Oswald, O.D. located? ▼
Zachary Oswald, O.D. is located at 25 JOHNSON AVE, Dillon, MT, 59725. Phone: (406) 683-2020.
What is Zachary Oswald, O.D.'s NPI number? ▼
Zachary Oswald, O.D.'s National Provider Identifier (NPI) is 1275810079, issued on 11/08/2011.
Does Zachary Oswald, O.D. prescribe more brand-name or generic drugs? ▼
Zachary Oswald, O.D.'s prescribing is 45% brand-name and 55% generic drugs by claim count, with $36K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 60,484 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does Zachary Oswald, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Zachary Oswald, O.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Neomycin-Polymyxin-Dexameth. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Zachary Oswald, O.D. accept Medicare? ▼
Zachary Oswald, O.D. appears in CMS Medicare data with 239 Part D claims and 71 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Zachary Oswald, O.D.'s credentials? ▼
Zachary Oswald, O.D.'s NPI is 1275810079 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.