Jonathan Leeman, M.D.
NPI 1871835231 · Radiation Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Leeman, M.D. is a Radiation Oncology Physician provider in Boston, MA (NPI 1871835231).
Provider details
- NPI number
- 1871835231
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 274578 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,011 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) |
|---|---|---|
| Calculation of Radiation Therapy Dose77300 | 1,599 | $34 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 363 | $47 |
| Design and Construction of Radiation Treatment Device for High Precision Radiation Therapy77338 | 191 | $237 |
| High Precision Radiation Therapy Planning77301 | 183 | $442 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 108 | $99 |
| Complex Radiation Therapy Planning77263 | 98 | $177 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 27 | 25 |
| Tamsulosin Hcl | 25 | 13 |
| Lorazepam | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,471 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
Additional practice locations (2)
- 55 Fruit StBoston, MA 02114-2621Phone: (617) 726-8651
- 100 Blossom StBoston, MA 02114-2606Phone: (617) 726-8651
Registry dates
- Enumerated
- 2013-03-25
- Last updated
- 2025-12-01
- Certified
- 2025-12-01
Frequently asked questions
- What is Jonathan Leeman's NPI number?
- Jonathan Leeman's National Provider Identifier (NPI) is 1871835231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Leeman's specialty?
- Jonathan Leeman is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Leeman located?
- Jonathan Leeman's practice location on file with NPPES is 75 Francis St, Boston, MA 02115.
- What is Jonathan Leeman's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Leeman is (617) 732-5500.
- Does Jonathan Leeman accept Medicare?
- Jonathan Leeman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Leeman's NPI active?
- Yes — Jonathan Leeman's NPI (1871835231) is active in the NPPES registry as of the last update on 2025-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.