NPI registry status
Active
2026 NPPES data Optometrist NPI 1043230584 OD
Verify on CMS → Thomas Billars, OD
Optometrist in Sioux Falls, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 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
111
Medicare Part D claims · 29 beneficiaries · Optometrist avg: 279
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.9/100
▼ 1 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Thomas Billars, OD reported a CMS MIPS final score of 82.9/100 - below the 83.5 national average - and filed 111 Medicare Part D claims in 2024.
- 82.9/100
- MIPS score · -1 vs avg
- 111
- Part D claims, 2024
- 73%
- generic prescribing
- ≥36th
- pct among measured MIPS (lower-bound band)
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.
Federal trust snapshot
What official records show about Thomas Billars, OD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1043230584), first enumerated 07/20/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 111 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 82.9/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1043230584 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-INLINE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1043230584
- ENUM-LEGACY 2006
- TAX-MEGA 61K Optometrist
- MIPS-INLINE 82.9/100
- RX-LIGHT 111
- BOOK-THIN 243 in South Dakota
- PHOTO-FINISH Laura Slowey · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Billars · this p…
Billars · this provider
82.9 MIPS pts
- Thomas Swift · h…
Thomas Swift
82.9 MIPS pts
- Laura Slowey · n…
Laura Slowey
82.9 MIPS pts
- Helena Cheng · n…
Helena Cheng
82.9 MIPS pts
- Sandeep Kaur · n…
Sandeep Kaur
82.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Thomas Billars, OD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
83 ≥ 36th percentile 36% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Thomas Billars, OD sits
This provider among optometrist peers
Across the 6,187 optometrist providers who report both Medicare Part D prescribing and a MIPS quality score, Thomas Billars, OD writes more Part D claims than 20% of them and scores higher on MIPS quality than 39% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one optometrist peer from a representative sample of 60; the gold marker is Thomas Billars, OD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Thomas Billars, OD?
Near national averagePrimary specialty
Optometrist
Medicare Part D claims
111 60% vs specialty avg
MIPS final score
82.9/100 0.6 pts vs avg
Specialty distribution in South Dakota
How Optometrist compares to other specialties among South Dakota providers
Medicare quality performance, MIPS
Thomas Billars, OD's 2023 MIPS final score plotted against the Optometrist national average
- MIPS Final Score
- 82.9/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1043230584 |
|---|---|
| Specialty | Optometrist |
| Credentials | OD |
| Gender | Male |
| NPI Issued | 07/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.9088
Final Score
Measured-score avg: 83.5
80.3797
Quality
79
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Above average
Thomas Billars, OD - brand share 27.0%
Optometrist average
27% brand-name claims vs 73% generic, on 111 2024 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 2024.
111
Total Claims
$7K
Total Drug Cost
29
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 185.667
- Total Day Supply
- 5,285
- Brand vs Generic
- 27% brand / 73% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $687
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.04
- Gender Split
- 59% female / 41% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Thomas Billars, OD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
68 claims
- Timolol Maleate 21
Timolol Maleate
21 claims
- Lumigan 18
Lumigan
18 claims
| Drug | Claims |
|---|---|
| Latanoprost | 68 |
| Timolol Maleate | 21 |
| Lumigan Bimatoprost | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Thomas Billars, OD fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Thomas Billars, OD's 111 claims are below the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Billars, both outside South Dakota so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (82.9 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Billars.
One of 243 Optometrist providers enrolled in South Dakota, 5 are shown here.
Dr. Katelin Albers-Kleinsasser
OD
Huron, SD
Dr. Derek Allmer
O.D.
Rapid City, SD
Dr. Eva Anderson
O.D.
Sioux Falls, SD
Dr. Gabrielle Anderson
OD
Sioux Falls, SD
Dr. Paul Anderson
OD
Yankton, SD
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Thomas Billars, OD's specialty? ▼
Thomas Billars, OD specializes in Optometrist and practices in Sioux Falls, South Dakota. Credentials: OD.
How much does Thomas Billars, OD prescribe under Medicare Part D? ▼
In 2024, Thomas Billars, OD wrote 111 Medicare Part D claims totaling $7K in drug costs for 29 beneficiaries.
What is Thomas Billars, OD's Medicare quality score? ▼
Thomas Billars, OD has a CMS MIPS Final Score of 82.9/100 (Quality: 80.4). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Thomas Billars, OD located? ▼
Thomas Billars, OD is located at 200 W 37TH ST, Sioux Falls, SD, 57105. Phone: (605) 336-2020.
What is Thomas Billars, OD's NPI number? ▼
Thomas Billars, OD's National Provider Identifier (NPI) is 1043230584, issued on 07/20/2006.
Does Thomas Billars, OD prescribe more brand-name or generic drugs? ▼
Thomas Billars, OD's prescribing is 27% brand-name and 73% generic drugs by claim count, with $6K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Thomas Billars, OD prescribe most often? ▼
Based on 2024 Medicare Part D data, Thomas Billars, OD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Billars, OD accept Medicare? ▼
Thomas Billars, OD appears in CMS Medicare data with 111 Part D claims and 29 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Billars, OD's credentials? ▼
Thomas Billars, OD's NPI is 1043230584 with credentials OD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.