NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1720217383 D.O
Verify on CMS → Trayton Mains, D.O
Rheumatology Physician in Lima, Ohio.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,200 in Rheumatology Physician, 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
3K
Medicare Part D claims · 562 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
83%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.9/100
▼ 9 pts below national avg 83.5 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Trayton Mains, D.O reported a CMS MIPS final score of 74.9/100 - below the 83.5 national average - and filed 3,041 Medicare Part D claims in 2023.
- 74.9/100
- MIPS score · -9 vs avg
- 3K
- Part D claims, 2023
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Trayton Mains, D.O'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.
75 ≥ 13th percentile 13% 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 Trayton Mains, D.O sits
This provider among rheumatology physician peers
Across the 1,970 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Trayton Mains, D.O writes more Part D claims than 74% of them and scores higher on MIPS quality than 16% - placing this provider in the high-volume, lower-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 rheumatology physician peer from a representative sample of 60; the gold marker is Trayton Mains, D.O. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Trayton Mains, D.O practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Trayton Mains, D.O?
Below national averagePrimary specialty
Rheumatology Physician
Medicare Part D claims
3,041 48% vs specialty avg
MIPS final score
74.9/100 8.6 pts vs avg
Specialty distribution in Ohio
How Rheumatology Physician compares to other specialties among Ohio providers
Medicare quality performance, MIPS
Trayton Mains, D.O's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 74.9/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 74.9/100 vs national avg 83.5
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).
Trayton Mains, D.O appears in the CMS NPPES registry as a Rheumatology Physician provider holding D.O credentials at 825 W MARKET ST STE 260, Lima, OH, 45805, with a listed phone of (419) 996-4003. NPI 1720217383 was issued on 07/03/2009.
Medicare Part D records for calendar year 2023 show 3,041 prescription claims written by this provider, covering 562 Medicare beneficiaries and totaling roughly $2.0 million in drug spend, split 16% brand-name and 83% generic by claim count, with an opioid prescribing rate of 2.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.9/100 for the 2023 performance year (Quality 94.2, Cost 22), compared with the 83.5 average among clinicians with a measured score.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,200 enrolled providers across 52 states and an average of 2,054 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 | 1720217383 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | D.O |
| Gender | Male |
| NPI Issued | 07/03/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.8579
Final Score
Measured-score avg: 83.5
94.1649
Quality
22.028
Cost
100
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Trayton Mains, D.O bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Mercy Health Physicians Lima Specialty Care LLC
Lima, OH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Ohio OMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~48K Ohio medical licensees in 2023 - they are NOT specific to Trayton Mains, D.O. To verify Trayton Mains, D.O's current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases
OMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Trayton Mains, D.O - brand share 16.0%
Rheumatology Physician average
16% brand-name claims vs 83% generic, on 3,041 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.
3,041
Total Claims
$2.0M
Total Drug Cost
562
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,175
- Total Day Supply
- 118,463
- Brand vs Generic
- 16% brand / 83% generic
- Brand Drug Cost
- $1.9M
- Generic Drug Cost
- $109K
- Opioid Claims
- 62 (2.0% rate)
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 69.8 years
- Avg HCC Risk Score
- 1.64
- Gender Split
- 72% female / 28% male
- Age Distribution
- <65: 120, 65-74: 263, 75-84: 160, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Trayton Mains, D.O prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methotrexate
Methotrexate
498 claims
- Prednisone
Prednisone
474 claims
- Leflunomide
Leflunomide
349 claims
- Sulfasalazine
Sulfasalazine
201 claims
- Azathioprine 198
Azathioprine
198 claims
- Hydroxychloroquine… 195
Hydroxychloroquine Sulfate
195 claims
- Mycophenolate Mofe… 127
Mycophenolate Mofetil
127 claims
- Alendronate Sodium 95
Alendronate Sodium
95 claims
| Drug | Claims |
|---|---|
| Methotrexate Methotrexate Sodium | 498 |
| Prednisone | 474 |
| Leflunomide | 349 |
| Sulfasalazine | 201 |
| Azathioprine | 198 |
| Hydroxychloroquine Sulfate | 195 |
| Mycophenolate Mofetil | 127 |
| Alendronate Sodium | 95 |
| Gabapentin | 87 |
| Allopurinol | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Trayton Mains, D.O fits within the Rheumatology Physician landscape nationally.
6,200
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Trayton Mains, D.O's 3,041 claims are above the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Ohio
Other clinicians with the same primary specialty enrolled in Ohio, drawn from the same CMS NPPES roster as Mains.
Dr. Abby Abelson
M.D.
Cleveland, OH
Dr. Aya Abugharbyeh
MD
Toledo, OH
Dr. Mohammed Abusamieh
M.D
Toledo, OH
Dr. Tara Adhikari
MD
Blue Ash, OH
Dr. Mohammed Ahmed
M.D.
Toledo, OH
Compare Rheumatology Physician 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 Ohio medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Rheumatology Physician 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 Trayton Mains, D.O's specialty? ▼
Trayton Mains, D.O specializes in Rheumatology Physician and practices in Lima, Ohio. Credentials: D.O.
How much does Trayton Mains, D.O prescribe under Medicare Part D? ▼
In 2023, Trayton Mains, D.O wrote 3,041 Medicare Part D claims totaling $2.0M in drug costs for 562 beneficiaries.
What is Trayton Mains, D.O's Medicare quality score? ▼
Trayton Mains, D.O has a CMS MIPS Final Score of 74.9/100 (Quality: 94.2, Cost: 22). 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 Trayton Mains, D.O located? ▼
Trayton Mains, D.O is located at 825 W MARKET ST STE 260, Lima, OH, 45805. Phone: (419) 996-4003.
What is Trayton Mains, D.O's NPI number? ▼
Trayton Mains, D.O's National Provider Identifier (NPI) is 1720217383, issued on 07/03/2009.
Does Trayton Mains, D.O prescribe more brand-name or generic drugs? ▼
Trayton Mains, D.O's prescribing is 16% brand-name and 83% generic drugs by claim count, with $1.9M in brand drug costs.
Does Trayton Mains, D.O prescribe opioids? ▼
Yes, Trayton Mains, D.O had 62 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,200 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Trayton Mains, D.O prescribe most often? ▼
Based on 2023 Medicare Part D data, Trayton Mains, D.O's most frequently prescribed drugs include Methotrexate, Prednisone, Leflunomide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Trayton Mains, D.O accept Medicare? ▼
Trayton Mains, D.O appears in CMS Medicare data with 3,041 Part D claims and 562 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Trayton Mains, D.O's credentials? ▼
Trayton Mains, D.O's NPI is 1720217383 with credentials D.O. 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
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 May 2026.