NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1245367267 MD
Verify on CMS → Karen Kogel, MD
Hematology & Oncology Physician in Denver, 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 11,215 in Hematology & Oncology 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
602
Medicare Part D claims · 129 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Karen Kogel, MD filed 602 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Denver, Colorado, prescribing 75% generic.
- 602
- Part D claims, 2023
- 75%
- 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.
Karen Kogel, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
602 Top 31% higher than 69% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Karen Kogel, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Karen Kogel, MD?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
602 29% vs specialty avg
Specialty distribution in Colorado
How Hematology & Oncology Physician compares to other specialties among Colorado providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hematology & Oncology Physician. Verify directly:
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).
Karen Kogel, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 2045 N FRANKLIN ST, Denver, CO, 80205, with a listed phone of (303) 338-4545. NPI 1245367267 was issued on 02/27/2007.
Medicare Part D records for calendar year 2023 show 602 prescription claims written by this provider, covering 129 Medicare beneficiaries and totaling roughly $1.5 million in drug spend, split 25% brand-name and 75% generic by claim count.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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 | 1245367267 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/27/2007 |
Hospital and facility affiliations
Facilities where Karen Kogel, MD 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.
Colorado Permanente Medical Group PC
Denver, 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).
Brand vs generic prescribing mix · Above average
Karen Kogel, MD - brand share 25.0%
Hematology & Oncology Physician average
25% brand-name claims vs 75% generic, on 602 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.
602
Total Claims
$1.5M
Total Drug Cost
129
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 901
- Total Day Supply
- 23,118
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $1.5M
- Generic Drug Cost
- $78K
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.96
- Gender Split
- 75% female / 25% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Karen Kogel, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
85 claims
- Dexamethasone
Dexamethasone
56 claims
- Hydroxyurea
Hydroxyurea
38 claims
- Imatinib Mesylate
Imatinib Mesylate
36 claims
- Deferasirox 31
Deferasirox
31 claims
- Ondansetron Odt 26
Ondansetron Odt
26 claims
- Acyclovir 25
Acyclovir
25 claims
- Imbruvica 23
Imbruvica
23 claims
| Drug | Claims |
|---|---|
| Anastrozole | 85 |
| Dexamethasone | 56 |
| Hydroxyurea | 38 |
| Imatinib Mesylate | 36 |
| Deferasirox | 31 |
| Ondansetron Odt Ondansetron | 26 |
| Acyclovir | 25 |
| Imbruvica Ibrutinib | 23 |
| Prednisone | 16 |
| Nivestym Filgrastim-Aafi | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Karen Kogel, MD fits within the Hematology & Oncology Physician landscape nationally.
11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Karen Kogel, MD's 602 claims are below the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Kogel.
Dr. Anosheh Afghahi
MD
Aurora, CO
Dr. Raul Alvarez
M.D.
Englewood, CO
Dr. Maria Amaya
MD
Aurora, CO
Dr. David Andorsky
MD
Boulder, CO
Dr. Travis Archuleta
MD
Pueblo, CO
Compare Hematology & Oncology 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 Hematology & Oncology 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 Karen Kogel, MD's specialty? ▼
Karen Kogel, MD specializes in Hematology & Oncology Physician and practices in Denver, Colorado. Credentials: MD.
How much does Karen Kogel, MD prescribe under Medicare Part D? ▼
In 2023, Karen Kogel, MD wrote 602 Medicare Part D claims totaling $1.5M in drug costs for 129 beneficiaries.
Where is Karen Kogel, MD located? ▼
Karen Kogel, MD is located at 2045 N FRANKLIN ST, Denver, CO, 80205. Phone: (303) 338-4545.
What is Karen Kogel, MD's NPI number? ▼
Karen Kogel, MD's National Provider Identifier (NPI) is 1245367267, issued on 02/27/2007.
Does Karen Kogel, MD prescribe more brand-name or generic drugs? ▼
Karen Kogel, MD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $1.5M in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Karen Kogel, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Karen Kogel, MD's most frequently prescribed drugs include Anastrozole, Dexamethasone, Hydroxyurea. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karen Kogel, MD accept Medicare? ▼
Karen Kogel, MD appears in CMS Medicare data with 602 Part D claims and 129 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karen Kogel, MD's credentials? ▼
Karen Kogel, MD's NPI is 1245367267 with credentials MD. 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.
- 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.