NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1508851478 M.D.
Verify on CMS → Catherine Hren, M.D.
Dermatology Physician in Cary, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 14,645 in Dermatology 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
604
Medicare Part D claims · 294 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.7/100
▲ 2 pts above national avg 83.1 · Above neutral
Industry payments
$3.7K
139 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
Catherine Hren, M.D. reported a CMS MIPS final score of 84.7/100 - above the 83.1 national average - and filed 604 Medicare Part D claims in 2023.
- 84.7/100
- MIPS score · +2 vs avg
- 604
- 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.
Catherine Hren, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 45th percentile higher than 45% 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 Catherine Hren, M.D. sits
This provider among dermatology physician peers
Across the 6,594 dermatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Catherine Hren, M.D. writes more Part D claims than 43% of them and scores higher on MIPS quality than 50% - 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 dermatology physician peer from a representative sample of 60; the gold marker is Catherine Hren, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Catherine Hren, M.D. 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 Catherine Hren, M.D.?
Near national averagePrimary specialty
Dermatology Physician
Medicare Part D claims
604 17% vs specialty avg
MIPS final score
84.7/100 1.6 pts vs avg
Specialty distribution in North Carolina
How Dermatology Physician compares to other specialties among North Carolina providers
Medicare quality performance, MIPS
Catherine Hren, M.D.'s 2023 MIPS final score plotted against the Dermatology Physician national average
- MIPS Final Score
- 84.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Dermatology Physician) - 84.7/100 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).
Catherine Hren, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 101 SW CARY PKWY, Cary, NC, 27511, with a listed phone of (919) 467-8556. NPI 1508851478 was issued on 09/15/2005.
Medicare Part D records for calendar year 2023 show 604 prescription claims written by this provider, covering 294 Medicare beneficiaries and totaling roughly $770K in drug spend, split 17% brand-name and 83% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 84.7/100 for the 2023 performance year (Quality 72.1), compared with the national average of 83.1.
Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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 | 1508851478 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 09/15/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.6537
Final Score
Avg: 83.1
72.0977
Quality
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Catherine Hren, M.D. 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.
Cary Dermatology Center PA
Cary, NC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Catherine Hren, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$3.7K
Largest payer
ABBVIE INC.
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 · Typical
Catherine Hren, M.D. - brand share 17.0%
Dermatology Physician average
17% brand-name claims vs 83% generic, on 604 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.
604
Total Claims
$770K
Total Drug Cost
294
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 760
- Total Day Supply
- 19,766
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $747K
- Generic Drug Cost
- $23K
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 0.83
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Catherine Hren, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Fluorouracil
Fluorouracil
71 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
69 claims
- Ketoconazole
Ketoconazole
45 claims
- Metronidazole
Metronidazole
33 claims
- Doxycycline Hyclate
Doxycycline Hyclate
30 claims
- Mupirocin 27
Mupirocin
27 claims
- Clobetasol Propion… 24
Clobetasol Propionate
24 claims
- Valacyclovir 23
Valacyclovir
23 claims
| Drug | Claims |
|---|---|
| Fluorouracil | 71 |
| Triamcinolone Acetonide | 69 |
| Ketoconazole | 45 |
| Metronidazole | 33 |
| Doxycycline Hyclate | 30 |
| Mupirocin | 27 |
| Clobetasol Propionate | 24 |
| Valacyclovir Valacyclovir Hcl | 23 |
| Mometasone Furoate | 21 |
| Skyrizi Pen Risankizumab-Rzaa | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Catherine Hren, M.D. fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Catherine Hren, M.D.'s 604 claims are below the specialty average of 729.
Nearby Dermatology Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Hren.
Dr. Maureen Aarons
MD
Raleigh, NC
Dr. Daniel Abraham
D.O.
Jacksonville, NC
Dr. Adewole Adamson
M.D.
Chapel Hill, NC
Dr. Chris Adigun
M.D.
Chapel Hill, NC
Dr. Christine Ahn
MD
Winston Salem, NC
Compare Dermatology 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 North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Dermatology 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 Catherine Hren, M.D.'s specialty? ▼
Catherine Hren, M.D. specializes in Dermatology Physician and practices in Cary, North Carolina. Credentials: M.D..
How much does Catherine Hren, M.D. prescribe under Medicare Part D? ▼
In 2023, Catherine Hren, M.D. wrote 604 Medicare Part D claims totaling $770K in drug costs for 294 beneficiaries.
What is Catherine Hren, M.D.'s Medicare quality score? ▼
Catherine Hren, M.D. has a CMS MIPS Final Score of 84.7/100 (Quality: 72.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Catherine Hren, M.D. located? ▼
Catherine Hren, M.D. is located at 101 SW CARY PKWY, Cary, NC, 27511. Phone: (919) 467-8556.
What is Catherine Hren, M.D.'s NPI number? ▼
Catherine Hren, M.D.'s National Provider Identifier (NPI) is 1508851478, issued on 09/15/2005.
Does Catherine Hren, M.D. prescribe more brand-name or generic drugs? ▼
Catherine Hren, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $747K in brand drug costs.
How many Dermatology Physician providers are there in the US? ▼
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Catherine Hren, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Catherine Hren, M.D.'s most frequently prescribed drugs include Fluorouracil, Triamcinolone Acetonide, Ketoconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Hren, M.D. accept Medicare? ▼
Catherine Hren, M.D. appears in CMS Medicare data with 604 Part D claims and 294 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Hren, M.D.'s credentials? ▼
Catherine Hren, M.D.'s NPI is 1508851478 with credentials M.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.
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.