NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1780784645 MD
Verify on CMS → Gregory Nanney, MD
Hematology & Oncology Physician in Newton, Kansas.
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
497
Medicare Part D claims · 116 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$119.61
2 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
Gregory Nanney, MD filed 497 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Newton, Kansas, prescribing 86% generic.
- 497
- Part D claims, 2023
- 86%
- 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.
Gregory Nanney, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
497 Top 38% higher than 62% 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)
Gregory Nanney, 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 Gregory Nanney, MD?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
497 41% vs specialty avg
Specialty distribution in Kansas
How Hematology & Oncology Physician compares to other specialties among Kansas 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).
Gregory Nanney, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 730 MEDICAL CENTER DR, Newton, KS, 67114, with a listed phone of (316) 283-1141. NPI 1780784645 was issued on 09/22/2006.
Medicare Part D records for calendar year 2023 show 497 prescription claims written by this provider, covering 116 Medicare beneficiaries and totaling roughly $711K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 14.5%.
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 | 1780784645 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/22/2006 |
Hospital and facility affiliations
Facilities where Gregory Nanney, 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.
Mercy Clinic Joplin LLC
Joplin, MO
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 Gregory Nanney, MD. Source: openpaymentsdata.cms.gov.
Total received
$120
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.
Brand vs generic prescribing mix · Typical
Gregory Nanney, MD - brand share 14.0%
Hematology & Oncology Physician average
14% brand-name claims vs 86% generic, on 497 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.
497
Total Claims
$711K
Total Drug Cost
116
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 678
- Total Day Supply
- 17,834
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $686K
- Generic Drug Cost
- $25K
- Opioid Claims
- 72 (14.5% rate)
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 2.60
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Nanney, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Letrozole
Letrozole
48 claims
- Anastrozole
Anastrozole
36 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
23 claims
- Oxycodone Hcl 17
Oxycodone Hcl
17 claims
- Eliquis 15
Eliquis
15 claims
- Mirtazapine 15
Mirtazapine
15 claims
- Prednisone 15
Prednisone
15 claims
- Allopurinol 14
Allopurinol
14 claims
| Drug | Claims |
|---|---|
| Letrozole | 48 |
| Anastrozole | 36 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 23 |
| Oxycodone Hcl | 17 |
| Eliquis Apixaban | 15 |
| Mirtazapine | 15 |
| Prednisone | 15 |
| Allopurinol | 14 |
| Furosemide | 14 |
| Hydroxyurea | 14 |
* 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 Gregory Nanney, 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
Gregory Nanney, MD's 497 claims are below the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Kansas
Other clinicians with the same primary specialty enrolled in Kansas, drawn from the same CMS NPPES roster as Nanney.
Dr. Haitham Abdelhakim
MBCHB
Westwood, KS
Dr. Sunil Abhyankar
M.D.
Westwood, KS
Dr. Phillip Acosta
MD
Westwood, KS
Dr. Yaman Alali
MD
Topeka, KS
Dr. Sawsan Amireh
MD
Hutchinson, KS
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 Kansas 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 Gregory Nanney, MD's specialty? ▼
Gregory Nanney, MD specializes in Hematology & Oncology Physician and practices in Newton, Kansas. Credentials: MD.
How much does Gregory Nanney, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Nanney, MD wrote 497 Medicare Part D claims totaling $711K in drug costs for 116 beneficiaries.
Where is Gregory Nanney, MD located? ▼
Gregory Nanney, MD is located at 730 MEDICAL CENTER DR, Newton, KS, 67114. Phone: (316) 283-1141.
What is Gregory Nanney, MD's NPI number? ▼
Gregory Nanney, MD's National Provider Identifier (NPI) is 1780784645, issued on 09/22/2006.
Does Gregory Nanney, MD prescribe more brand-name or generic drugs? ▼
Gregory Nanney, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $686K in brand drug costs.
Does Gregory Nanney, MD prescribe opioids? ▼
Yes, Gregory Nanney, MD had 72 opioid claims in 2023 with an opioid prescribing rate of 14.5%.
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 Gregory Nanney, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Nanney, MD's most frequently prescribed drugs include Letrozole, Anastrozole, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Nanney, MD accept Medicare? ▼
Gregory Nanney, MD appears in CMS Medicare data with 497 Part D claims and 116 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Nanney, MD's credentials? ▼
Gregory Nanney, MD's NPI is 1780784645 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.