NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1376809616 DO
Verify on CMS → Ruth Chan, DO
Rheumatology Physician in Hilliard, 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
677
Medicare Part D claims · 154 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.3/100
▲ 12 pts above national avg 83.1 · Exceptional
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
Ruth Chan, DO reported a CMS MIPS final score of 95.3/100 - above the 83.1 national average - and filed 677 Medicare Part D claims in 2023.
- 95.3/100
- MIPS score · +12 vs avg
- 677
- Part D claims, 2023
- 91%
- 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.
Ruth Chan, DO's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
95 Top 21% higher than 79% 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 Ruth Chan, DO sits
This provider among rheumatology physician peers
Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ruth Chan, DO writes more Part D claims than 17% of them and scores higher on MIPS quality than 79% - 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 rheumatology physician peer from a representative sample of 60; the gold marker is Ruth Chan, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ruth Chan, DO 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 Ruth Chan, DO?
High performer (top quartile)Primary specialty
Rheumatology Physician
Medicare Part D claims
677 67% vs specialty avg
MIPS final score
95.3/100 12.2 pts vs avg
Specialty distribution in Ohio
How Rheumatology Physician compares to other specialties among Ohio providers
Medicare quality performance, MIPS
Ruth Chan, DO's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 95.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 95.3/100 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).
Ruth Chan, DO appears in the CMS NPPES registry as a Rheumatology Physician provider holding DO credentials at 3691 RIDGE MILL DR, Hilliard, OH, 43026, with a listed phone of (614) 293-4837. NPI 1376809616 was issued on 04/11/2012.
Medicare Part D records for calendar year 2023 show 677 prescription claims written by this provider, covering 154 Medicare beneficiaries and totaling roughly $416K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 2.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 95.3/100 for the 2023 performance year (Quality 76.6), compared with the national average of 83.1.
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 | 1376809616 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 04/11/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
95.311
Final Score
Avg: 83.1
76.5856
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Ruth Chan, DO 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.
Osu Internal Medicine LLC
Columbus, 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 Ruth Chan, DO. To verify Ruth Chan, DO'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 · Generic-heavy
Ruth Chan, DO - brand share 9.0%
Rheumatology Physician average
9% brand-name claims vs 91% generic, on 677 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.
677
Total Claims
$416K
Total Drug Cost
154
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 950
- Total Day Supply
- 26,700
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $400K
- Generic Drug Cost
- $17K
- Opioid Claims
- 14 (2.1% rate)
Patient Demographics
- Average Patient Age
- 67.6 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 75% female / 25% male
- Age Distribution
- <65: 41, 65-74: 70, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ruth Chan, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
197 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
117 claims
- Methotrexate 50
Methotrexate
50 claims
- Gabapentin 39
Gabapentin
39 claims
- Allopurinol 19
Allopurinol
19 claims
- Meloxicam 18
Meloxicam
18 claims
- Diclofenac Sodium 17
Diclofenac Sodium
17 claims
- Mycophenolate Mofe… 17
Mycophenolate Mofetil
17 claims
| Drug | Claims |
|---|---|
| Prednisone | 197 |
| Hydroxychloroquine Sulfate | 117 |
| Methotrexate Methotrexate Sodium | 50 |
| Gabapentin | 39 |
| Allopurinol | 19 |
| Meloxicam | 18 |
| Diclofenac Sodium | 17 |
| Mycophenolate Mofetil | 17 |
| Humira(Cf) Pen Adalimumab | 16 |
| Duloxetine Hcl | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Ruth Chan, DO 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
Ruth Chan, DO's 677 claims are below 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 Chan.
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 Ruth Chan, DO's specialty? ▼
Ruth Chan, DO specializes in Rheumatology Physician and practices in Hilliard, Ohio. Credentials: DO.
How much does Ruth Chan, DO prescribe under Medicare Part D? ▼
In 2023, Ruth Chan, DO wrote 677 Medicare Part D claims totaling $416K in drug costs for 154 beneficiaries.
What is Ruth Chan, DO's Medicare quality score? ▼
Ruth Chan, DO has a CMS MIPS Final Score of 95.3/100 (Quality: 76.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ruth Chan, DO located? ▼
Ruth Chan, DO is located at 3691 RIDGE MILL DR, Hilliard, OH, 43026. Phone: (614) 293-4837.
What is Ruth Chan, DO's NPI number? ▼
Ruth Chan, DO's National Provider Identifier (NPI) is 1376809616, issued on 04/11/2012.
Does Ruth Chan, DO prescribe more brand-name or generic drugs? ▼
Ruth Chan, DO's prescribing is 9% brand-name and 91% generic drugs by claim count, with $400K in brand drug costs.
Does Ruth Chan, DO prescribe opioids? ▼
Yes, Ruth Chan, DO had 14 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
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 Ruth Chan, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Ruth Chan, DO's most frequently prescribed drugs include Prednisone, Hydroxychloroquine Sulfate, Methotrexate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ruth Chan, DO accept Medicare? ▼
Ruth Chan, DO appears in CMS Medicare data with 677 Part D claims and 154 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ruth Chan, DO's credentials? ▼
Ruth Chan, DO's NPI is 1376809616 with credentials DO. 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.
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.