Dr. Nathan A. Pennell, MD, PhD

  • Cleveland, OH
  • Hematologist and oncologist
NPI1508836438
Medicare services, 2024
380
Medicare patients, 2024
113
Part D claims, 2024
487
Publications
116
Clinical trials
10
Practice address
9500 Euclid Avenue, Cleveland, OH 44195
Practice phone
Call (216) 952-9829
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Cleveland Clinic Main Campus

Hospital · Cleveland, Ohio

See all 3 affiliations

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Dr. Nathan A. Pennell is a hematologist and oncologist in Cleveland, Ohio

Dr. Pennell practices at Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation.

Dr. Pennell's NPI, 1508836438, was assigned on January 24, 2006. Dr. Pennell graduated from University of Florida College of Medicine in 2002. Dr. Pennell holds Ohio license 35091488.

NPI and contact details
NPI enumeration date
January 24, 2006
NPI status
Active
Practice phone
(216) 952-9829
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Dr. Nathan A. Pennell practices at Cleveland Clinic Main Campus in Cleveland, Ohio

Dr. Pennell's primary practice is Cleveland Clinic Main Campus, at 9500 Euclid Avenue, Cleveland, OH 44195 in Cuyahoga County. The practice phone is (216) 952-9829.

Source: Dmand AI Affiliation Data

Dr. Nathan A. Pennell is affiliated with 3 sites of care

Dr. Pennell's primary practice is Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation. Dmand AI also links Dr. Pennell to 2 clinical labs, each named with a free account. Dr. Pennell's employer is on file too: a hospital.

See all 3 affiliations for Dr. Pennell

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Nathan A. Pennell's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pennell practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Cleveland Clinic Main CampusAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Nathan A. Pennell is one of 460 hematologists and oncologists in Ohio

Hematology and oncology is Dr. Pennell's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Pennell is licensed in Ohio.

Specialties and state licenses

  • Hematology and oncology, OhioPrimaryLicense 35091488 · taxonomy 207RH0003X

Hematologists and oncologists near Dr. Pennell

Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Nathan A. Pennell billed Medicare for 380 services in 2024

CMS data shows 380 Medicare services from Dr. Pennell across 5 procedure codes in 2024, for 113 Medicare patients. Medicare paid $17,227 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024380
Medicare patients113
Paid by Medicare$17,227
Procedure codes5

Dr. Pennell's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3292024: 21036%
Other services
2023: 02024: 170

Dr. Pennell compared with the Ohio median for hematologists and oncologists, 2024

  • Dr. Pennell
  • Ohio median
Medicare services
380vs 62639% below
Medicare patients
113vs 23452% below
Part D claims
285vs 47840% below

Medians across 452 hematologists and oncologists in Ohio with Dmand AI profiles that report each measure.

Dr. Pennell's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Pennell

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Nathan A. Pennell treated 113 Medicare patients in 2024, average age 74

CMS counts 113 Medicare patients who saw Dr. Pennell in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have cancer, and 75% have high blood pressure. Their average risk score is 2.89, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Pennell's median patient age at 68, with 66% women.

Medicare patients, 2024113
Average age74
Average risk score2.89

Dr. Pennell's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Pennell's Medicare patients by sex, 2024

  • Women6154%
  • Men5246%

Chronic conditions among Dr. Pennell's Medicare patients, 2024

  1. Cancer75%
  2. High blood pressure75%
  3. High cholesterol72%
  4. COPD50%
  5. Arthritis47%
  6. Mood disorders35%
  7. Atrial fibrillation33%
  8. Anxiety32%

Share of Medicare patients with each condition. A patient can have several.

Dr. Pennell's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 68

Patient panel by sex, all payers

  • Women66%
  • Men32%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Nathan A. Pennell wrote 487 Medicare Part D claims in 2024

In 2024, Dr. Pennell wrote 487 Medicare Part D claims for 72 patients. 67% of them were for generic drugs. CMS names the drug for 285 of them, across 14 drugs with 11 or more claims each, at $946,381 in total drug cost. In 2023, CMS named 235 claims across 10 drugs.

Part D claims, 2024487
Drugs named by CMS14
Total drug cost$946,381
Part D patients72

Dr. Pennell's Part D claims by kind of drug, 2024

  • Generic325 claims67%
  • Brand-name162 claims33%

Dr. Pennell's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Pennell's Part D claims, 2024

  • Opioids3%16 of 487 claims
  • Antibiotics4%20 of 487 claims
  • Antipsychotics, patients 65 and over5%22 of 487 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 2352024: 28521%

Drugs named by CMS: 14 in 2024, 10 in 2023.

See all prescribing by Dr. Pennell

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

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Dr. Nathan A. Pennell has 116 publications on record

Dmand AI links 116 papers to Dr. Pennell, published from 2009 to 2025. 2022 was the busiest year, with 11. The most frequent topics are Lung Neoplasms, Carcinoma, Non-Small-Cell Lung and ErbB Receptors. Dr. Pennell has published most often in Oncologist. Dr. Pennell's most frequent co-authors are Vamsidhar Velcheti, MD, Pradnya Dinkar Patil, MD and Daniel Philip Raymond, MD.

Papers116
Years published2009 to 2025

Dr. Pennell's papers by year, 2016 to 2025

Topics Dr. Pennell writes about most

  • Lung Neoplasms
  • Carcinoma, Non-Small-Cell Lung
  • ErbB Receptors
  • Protein Kinase Inhibitors
  • COVID-19
  • SARS-CoV-2
  • Antineoplastic Combined Chemotherapy Protocols
  • Medical Oncology

Dr. Pennell's most frequent co-authors

Recent publications by Dr. Pennell

See all 116 publications and co-authors

See who Dr. Pennell researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Pennell works with, so you can find a warm path to the right hematologists and oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Nathan A. Pennell has worked on 10 clinical trials

Dmand AI links Dr. Pennell to 10 clinical trials, 4 of them phase 2 studies. 7 are still active or recruiting. Conditions studied include Carcinoma, Bronchogenic, Carcinoma, Medullary and Carcinoma, Non-Small-Cell Lung. National Cancer Institute (NCI) sponsors the most, 5.

Clinical trials with Dr. Pennell by phase

  1. NonePhase 1: no trials
  2. 2Phase 1/2: 2 trials
  3. 4Phase 2: 4 trials
  4. 2Phase 3: 2 trials
  5. NonePhase 4: no trials

Conditions in Dr. Pennell's trials

  • Carcinoma, Bronchogenic
  • Carcinoma, Medullary
  • Carcinoma, Non-Small-Cell Lung
  • Lung Neoplasms
  • Thoracic Neoplasms

Investigators on the most trials with Dr. Pennell

Recent clinical trials with Dr. Pennell

See all 10 clinical trials and co-investigators

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Nathan A. Pennell received $192,876 in industry payments from 2016 to 2025

CMS Open Payments shows 150 general payments to Dr. Pennell from 15 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 74% of the total. AstraZeneca Pharmaceuticals LP paid the most, $51,106. It also lists 3 research payments totaling $687 from 2016 to 2018.

General payments to Dr. Pennell by program year, 2016 to 2025

General payments to Dr. Pennell by kind, 2016 to 2025

$192.9Kin total
  • Consulting fees$142,01574%
  • Speaker and faculty fees$28,08015%
  • Travel and lodging$13,4777%
  • Honoraria$4,5202%
  • Other$4,2842%

Companies that paid Dr. Pennell the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Pennell

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Nathan A. Pennell graduated from University of Florida College of Medicine

Dr. Pennell graduated from University of Florida College of Medicine in 2002.

  1. Medical schoolUniversity of Florida College of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Nathan A. Pennell's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Nathan A. Pennell

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Nathan A. Pennell's NPI number?

Dr. Nathan A. Pennell's NPI number is 1508836438. It was assigned on January 24, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Nathan A. Pennell?

Dr. Nathan A. Pennell is a hematologist and oncologist in Cleveland, Ohio. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).

Where does Dr. Nathan A. Pennell practice?

Dr. Pennell practices at 9500 Euclid Avenue, Cleveland, OH 44195. Dr. Pennell's primary practice is Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation. Dmand AI also links Dr. Pennell to 2 clinical labs.

What is Dr. Nathan A. Pennell's office phone number?

The practice phone on file for Dr. Pennell is (216) 952-9829.

What is Dr. Nathan A. Pennell's medical license number?

Dr. Pennell holds Ohio license 35091488.

Which hospitals is Dr. Nathan A. Pennell affiliated with?

Dr. Pennell practices at Cleveland Clinic Main Campus in Cleveland, Ohio.

Does Dr. Nathan A. Pennell accept Medicare?

Yes. CMS data shows Dr. Pennell billed Medicare for 380 services in 2024.

How many Medicare patients does Dr. Nathan A. Pennell see?

CMS counts 113 Medicare patients who saw Dr. Pennell in 2024, with an average age of 74.

What services does Dr. Nathan A. Pennell bill to Medicare?

In 2024, Dr. Pennell's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99213).

Where did Dr. Nathan A. Pennell go to medical school?

Dr. Pennell graduated from University of Florida College of Medicine in 2002.

Show 5 more questionsShow fewer questions

What drugs does Dr. Nathan A. Pennell prescribe most?

In 2024 Medicare Part D data, Dr. Pennell's most prescribed drugs by claims were Tagrisso, Ondansetron HCl and Olanzapine.

Has Dr. Nathan A. Pennell received payments from drug or device companies?

CMS Open Payments shows $192,876 in general payments to Dr. Pennell from 15 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Nathan A. Pennell been practicing?

Dr. Pennell graduated from medical school in 2002, 24 years ago.

Does Dr. Nathan A. Pennell do research?

Dmand AI links 116 publications to Dr. Pennell, published from 2009 to 2025. Dr. Pennell has worked on 10 clinical trials.

Who does Dr. Nathan A. Pennell publish with?

Dr. Pennell's most frequent co-authors are Vamsidhar Velcheti, MD (16 shared papers), Pradnya Dinkar Patil, MD (13 shared papers) and Daniel Philip Raymond, MD (6 shared papers).

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