CATHERINE DUNCAN, DO
Physical Medicine & Rehabilitation Physician in APEX, North Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
CATHERINE DUNCAN, DO reported a CMS MIPS final score of 64.468/100 — below the 83.1 national average — and filed 684 Medicare Part D claims in 2023.
- 64.468/100
- MIPS score · -19 vs avg
- 684
- Part D claims, 2023
- 87%
- 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.
CATHERINE DUNCAN, DO's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure
64 6th percentile higher than 6% 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
CATHERINE DUNCAN, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 CATHERINE DUNCAN, DO?
Below national averagePrimary specialty
Medicare Part D claims
MIPS final score
Specialty distribution in North Carolina
How Physical Medicine & Rehabilitation Physician compares to other specialties among North Carolina providers
Physical Medicine & Rehabilitation Physician share within North Carolina
Physical Medicine & Rehabilitation Physician is one of the more visible NUCC categories in North Carolina
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Medicare quality performance — MIPS
CATHERINE DUNCAN, DO's 2023 MIPS final score plotted against the Physical Medicine & Rehabilitation Physician national average
- MIPS Final Score
- 64.468/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physical Medicine & Rehabilitation Physician) — 64.468/100 vs national avg 83.1
Quality benchmarks
- National MIPS avg 2023 reporting year
- Quality dim CMS Quality category
- Cost dim CMS Cost category
- Specialty volume Physical Medicine & Rehabilitation Physician US NPIs
64.468/100 MIPS final score — 18.6 pts below the 83.1 national average
Quality, Cost, Promoting Interoperability, and Improvement Activities composite score for the 2023 performance year. Specialty: Physical Medicine & Rehabilitation Physician. Quality dim: 52.3726. Cost dim: 68.877.
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).
CATHERINE DUNCAN, DO appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding DO credentials at 1031 W WILLIAMS ST, APEX, NC, 27502, with a listed phone of (919) 439-7867. NPI 1396778262 was issued on 07/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUNCAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 684 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $99K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 54.1%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 64.468/100 for the 2023 performance year (Quality 52.3726, Cost 68.877), compared with the national average of 83.1.
Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,306 enrolled providers across 54 states and an average of 781 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 | 1396778262 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 07/07/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm CATHERINE DUNCAN, DO's current license status, disciplinary history, and board certifications with the North Carolina Medical Board in North Carolina before relying on this page for a clinical or care decision.
How we sourced this profile
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
Reporting: Group practice
Brand vs generic prescribing mix · Typical
13% brand-name claims vs 87% generic, on 684 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.
Prescribing Breakdown
- 30-Day Fills
- 781
- Total Day Supply
- 22,645
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $81K
- Generic Drug Cost
- $18K
- Opioid Claims
- 370 (54.1% rate)
Patient Demographics
- Average Patient Age
- 66.9 years
- Avg HCC Risk Score
- 1.95
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 33, 65-74: 38, 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 CATHERINE DUNCAN, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
111 claims
- Oxycodone Hcl
Oxycodone Hcl
71 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
56 claims
- Gabapentin 34
Gabapentin
34 claims
- Pregabalin 20
Pregabalin
20 claims
- Tramadol Hcl 20
Tramadol Hcl
20 claims
- Tizanidine Hcl 19
Tizanidine Hcl
19 claims
- Methadone Hcl 18
Methadone Hcl
18 claims
| Drug | Claims |
|---|---|
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 111 |
| Oxycodone Hcl | 71 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 56 |
| Gabapentin | 34 |
| Pregabalin | 20 |
| Tramadol Hcl | 20 |
| Tizanidine Hcl | 19 |
| Methadone Hcl | 18 |
| Cyclobenzaprine Hcl | 17 |
| Morphine Sulfate Er Morphine Sulfate | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physical Medicine & Rehabilitation Physician Overview
How CATHERINE DUNCAN, DO fits within the Physical Medicine & Rehabilitation Physician landscape nationally.
CATHERINE DUNCAN, DO's 684 claims are below the specialty average of 781.
Nearby Physical Medicine & Rehabilitation Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as DUNCAN.
Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →
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Frequently Asked Questions
What is CATHERINE DUNCAN, DO's specialty? ▼
How much does CATHERINE DUNCAN, DO prescribe under Medicare Part D? ▼
What is CATHERINE DUNCAN, DO's Medicare quality score? ▼
Where is CATHERINE DUNCAN, DO located? ▼
What is CATHERINE DUNCAN, DO's NPI number? ▼
Does CATHERINE DUNCAN, DO prescribe more brand-name or generic drugs? ▼
Does CATHERINE DUNCAN, DO prescribe opioids? ▼
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
What drugs does CATHERINE DUNCAN, DO prescribe most often? ▼
Does CATHERINE DUNCAN, DO accept Medicare? ▼
How can I verify CATHERINE DUNCAN, DO's credentials? ▼
Data Sources
- 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