NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1629423934
Verify on CMS → James Isaacs
Medical Oncology Physician in Cleveland, Ohio.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,815 in Medical 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
195
Medicare Part D claims · 45 beneficiaries · Medical Oncology Physician avg: 689
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$215.02
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
James Isaacs filed 195 Medicare Part D claims in 2023 as a Medical Oncology Physician in Cleveland, Ohio, prescribing 90% generic.
- 195
- Part D claims, 2023
- 90%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥35th
- pct by Part D claim volume (lower-bound band)
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.
James Isaacs's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
195 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
James Isaacs 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 James Isaacs?
Quality data not reportedPrimary specialty
Medical Oncology Physician
Medicare Part D claims
195 72% vs specialty avg
Specialty distribution in Ohio
How Medical Oncology Physician compares to other specialties among Ohio 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 Medical 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).
James Isaacs appears in the CMS NPPES registry as a Medical Oncology Physician provider at 10201 CARNEGIE AVE, Cleveland, OH, 44106, with a listed phone of (866) 223-8100. NPI 1629423934 was issued on 04/25/2016.
Medicare Part D records for calendar year 2023 show 195 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $145K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 6.7%.
Medical Oncology Physician is a narrow specialty nationwide, with 3,815 enrolled providers across 53 states and an average of 689 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 | 1629423934 |
|---|---|
| Specialty | Medical Oncology Physician |
| Gender | Male |
| NPI Issued | 04/25/2016 |
Hospital and facility affiliations
Facilities where James Isaacs 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.
Cleveland Clinic
★★★★☆ 4/5
Cleveland, OH
Acute Care Hospitals
CMS CCN: 360180
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 James Isaacs. Source: openpaymentsdata.cms.gov.
Total received
$215
Largest payer
E.R. Squibb & Sons, L.L.C.
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.
License & disciplinary context - Ohio OMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~48K Ohio medical licensees in 2023 - they are NOT specific to James Isaacs. To verify James Isaacs's current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases
OMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
James Isaacs - brand share 10.0%
Medical Oncology Physician average
10% brand-name claims vs 90% generic, on 195 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.
195
Total Claims
$145K
Total Drug Cost
45
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 253
- Total Day Supply
- 6,683
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $140K
- Generic Drug Cost
- $5K
- Opioid Claims
- 13 (6.7% rate)
Patient Demographics
- Average Patient Age
- 74.1 years
- Avg HCC Risk Score
- 3.08
- Gender Split
- 29% female / 71% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What James Isaacs prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocortisone
Hydrocortisone
35 claims
- Prednisone
Prednisone
35 claims
- Pantoprazole Sodium 13
Pantoprazole Sodium
13 claims
| Drug | Claims |
|---|---|
| Hydrocortisone | 35 |
| Prednisone | 35 |
| Pantoprazole Sodium | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Oncology Physician Overview
How James Isaacs fits within the Medical Oncology Physician landscape nationally.
3,815
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider
James Isaacs's 195 claims are below the specialty average of 689.
Nearby Medical Oncology Physician Providers in Ohio
Other clinicians with the same primary specialty enrolled in Ohio, drawn from the same CMS NPPES roster as Isaacs.
Dr. Mufti Ahmad
MD
Fairfield Township, OH
Dr. Adnan Al-Khalili
MD
Perrysburg, OH
Dr. Asrar Alahmadi
MD
Columbus, OH
Dr. Adeel Arshad
MD
Columbus, OH
Dr. Robert Baiocchi
M.D.
Columbus, OH
Compare Medical 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 Ohio medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Ohio
Frequently Asked Questions
What is James Isaacs's specialty? ▼
James Isaacs specializes in Medical Oncology Physician and practices in Cleveland, Ohio.
How much does James Isaacs prescribe under Medicare Part D? ▼
In 2023, James Isaacs wrote 195 Medicare Part D claims totaling $145K in drug costs for 45 beneficiaries.
Where is James Isaacs located? ▼
James Isaacs is located at 10201 CARNEGIE AVE, Cleveland, OH, 44106. Phone: (866) 223-8100.
What is James Isaacs's NPI number? ▼
James Isaacs's National Provider Identifier (NPI) is 1629423934, issued on 04/25/2016.
Does James Isaacs prescribe more brand-name or generic drugs? ▼
James Isaacs's prescribing is 10% brand-name and 90% generic drugs by claim count, with $140K in brand drug costs.
Does James Isaacs prescribe opioids? ▼
Yes, James Isaacs had 13 opioid claims in 2023 with an opioid prescribing rate of 6.7%.
How many Medical Oncology Physician providers are there in the US? ▼
There are 3,815 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does James Isaacs prescribe most often? ▼
Based on 2023 Medicare Part D data, James Isaacs's most frequently prescribed drugs include Hydrocortisone, Prednisone, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Isaacs accept Medicare? ▼
James Isaacs appears in CMS Medicare data with 195 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Isaacs's credentials? ▼
James Isaacs's NPI is 1629423934. 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
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.