NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1902194871 D.O.
Verify on CMS → Cathy Koger, D.O.
Dermatology Physician in Boulder, Colorado.
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
391
Medicare Part D claims · 175 beneficiaries · Dermatology Physician avg: 729
MIPS score
91.8/100
▲ 9 pts above national avg 83.1 · Exceptional
Industry payments
$20.6K
110 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Cathy Koger, D.O. reported a CMS MIPS final score of 91.8/100 - above the 83.1 national average - and filed 391 Medicare Part D claims in 2023.
- 91.8/100
- MIPS score · +9 vs avg
- 391
- Part D claims, 2023
- 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.
Cathy Koger, D.O.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 37% higher than 63% 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 Cathy Koger, D.O. 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, Cathy Koger, D.O. writes more Part D claims than 26% of them and scores higher on MIPS quality than 63% - 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 Cathy Koger, D.O.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Cathy Koger, 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 Cathy Koger, D.O.?
High performer (top quartile)Primary specialty
Dermatology Physician
Medicare Part D claims
391 46% vs specialty avg
MIPS final score
91.8/100 8.7 pts vs avg
Specialty distribution in Colorado
How Dermatology Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Cathy Koger, D.O.'s 2023 MIPS final score plotted against the Dermatology Physician national average
- MIPS Final Score
- 91.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Dermatology Physician) - 91.8/100 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).
Cathy Koger, D.O. appears in the CMS NPPES registry as a Dermatology Physician provider holding D.O. credentials at 3434 47TH ST STE 200, Boulder, CO, 80301, with a listed phone of (303) 444-8100. NPI 1902194871 was issued on 07/13/2011.
Medicare Part D records for calendar year 2023 show 391 prescription claims written by this provider, covering 175 Medicare beneficiaries and totaling roughly $19K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.8/100 for the 2023 performance year (Quality 90), 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 | 1902194871 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 07/13/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.8
Final Score
Avg: 83.1
90
Quality
91
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Cathy Koger, 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.
K2 Dermatology LLC
Boulder, CO
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 Cathy Koger, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$20.6K
Largest payer
Lilly USA, LLC
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
391
Total Claims
$19K
Total Drug Cost
175
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 486
- Total Day Supply
- 12,500
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 0.98
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Cathy Koger, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
78 claims
- Doxycycline Hyclate
Doxycycline Hyclate
50 claims
- Mupirocin
Mupirocin
38 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
33 claims
- Acyclovir 25
Acyclovir
25 claims
- Clobetasol Propion… 20
Clobetasol Propionate
20 claims
- Hydrocortisone 18
Hydrocortisone
18 claims
- Valacyclovir 15
Valacyclovir
15 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 78 |
| Doxycycline Hyclate | 50 |
| Mupirocin | 38 |
| Triamcinolone Acetonide | 33 |
| Acyclovir | 25 |
| Clobetasol Propionate | 20 |
| Hydrocortisone | 18 |
| Valacyclovir Valacyclovir Hcl | 15 |
| Spironolactone | 13 |
| Fluocinonide | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Cathy Koger, D.O. fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Cathy Koger, D.O.'s 391 claims are below the specialty average of 729.
Nearby Dermatology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Koger.
Dr. Phillip Albright
M.D.
Denver, CO
Dr. Paola Aldana
MD
Denver, CO
Dr. Theodore Alkousakis
M.D.
Aurora, CO
Dr. Shawn Allen
MD
Boulder, CO
Dr. Carol Alonso
M.D.
Westminster, CO
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 Colorado 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 Cathy Koger, D.O.'s specialty? ▼
Cathy Koger, D.O. specializes in Dermatology Physician and practices in Boulder, Colorado. Credentials: D.O..
How much does Cathy Koger, D.O. prescribe under Medicare Part D? ▼
In 2023, Cathy Koger, D.O. wrote 391 Medicare Part D claims totaling $19K in drug costs for 175 beneficiaries.
What is Cathy Koger, D.O.'s Medicare quality score? ▼
Cathy Koger, D.O. has a CMS MIPS Final Score of 91.8/100 (Quality: 90). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Cathy Koger, D.O. located? ▼
Cathy Koger, D.O. is located at 3434 47TH ST STE 200, Boulder, CO, 80301. Phone: (303) 444-8100.
What is Cathy Koger, D.O.'s NPI number? ▼
Cathy Koger, D.O.'s National Provider Identifier (NPI) is 1902194871, issued on 07/13/2011.
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 Cathy Koger, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Cathy Koger, D.O.'s most frequently prescribed drugs include Ketoconazole, Doxycycline Hyclate, Mupirocin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cathy Koger, D.O. accept Medicare? ▼
Cathy Koger, D.O. appears in CMS Medicare data with 391 Part D claims and 175 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cathy Koger, D.O.'s credentials? ▼
Cathy Koger, D.O.'s NPI is 1902194871 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
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.