James Isaacs
NPI 1629423934 · Medical Oncology Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Isaacs is a Medical Oncology Physician provider in Cleveland, OH (NPI 1629423934).
Provider details
- NPI number
- 1629423934
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 35.144466 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
448 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 119 | $137 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 92 | $92 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 87 | $112 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 | $120 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 29 | $92 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 22 | 15 |
| Levothyroxine Sodium | 18 | — |
| Pantoprazole Sodium | 16 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 14 | — |
| Oxycodone Hcl | 13 | — |
| Olanzapine | 12 | — |
| Edoxaban Tosylatebrand: Savaysa |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$215 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-25
- Last updated
- 2022-07-12
- Certified
- 2022-07-12
Frequently asked questions
- What is James Isaacs's NPI number?
- James Isaacs's National Provider Identifier (NPI) is 1629423934, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Isaacs's specialty?
- James Isaacs is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is James Isaacs located?
- James Isaacs's practice location on file with NPPES is 10201 Carnegie Ave, Cleveland, OH 44106-2130.
- What is James Isaacs's phone number?
- The practice phone number listed in the NPPES registry for James Isaacs is (866) 223-8100.
- Does James Isaacs accept Medicare?
- James Isaacs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Isaacs's NPI active?
- Yes — James Isaacs's NPI (1629423934) is active in the NPPES registry as of the last update on 2022-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.