2026 NPPES data Dermatology Physician NPI 1902194871 D.O.
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CATHY KOGER, D.O.

Dermatology Physician in BOULDER, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
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 · [object Object]
Industry payments
$20.6K
110 payments · CMS Open Payments (Sunshine Act)

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

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

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)

NPI registry status

Active

Issued 07/13/2011

NPI 1902194871

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

391 46% vs specialty avg

2023 prescription claims

Specialty avg: 729

MIPS final score

91.8/100 8.700000000000003% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Colorado

How Dermatology Physician compares to other specialties among Colorado providers

Colorado providers

Dermatology Physician share within Colorado

1. Dermatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dermatology Physician share within Colorado

Medicare quality performance — MIPS

CATHY KOGER, D.O.'s 2023 MIPS final score plotted against the Dermatology Physician national average

High performer (top quartile)
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

0%100%National avg83%91.8%
MIPS final score (Dermatology Physician) — 91.8/100 vs national avg 83.1

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. is a Dermatology Physician provider practicing in BOULDER, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1902194871. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOGER 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 391 prescription claims written by this provider, covering 175 Medicare beneficiaries and totaling roughly $19K in drug spend. 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 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 14,610 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

3434 47TH ST STE 200
BOULDER, CO 80301

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.

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.

14,610
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.

Compare Dermatology Physician nationally: see state-by-state distribution →

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 14,610 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

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