Jeffrey Clark, MD
NPI 1710951751 · Medical Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Clark, MD is a Medical Oncology Physician provider in Boston, MA (NPI 1710951751).
Provider details
- NPI number
- 1710951751
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 80647 (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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
880 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 218 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 209 | $69 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 119 | $82 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 101 | $98 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 75 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 30 | 15 |
| Prednisone | 27 | 11 |
| Dexamethasone | 16 | — |
| Prochlorperazine Maleate | 15 | — |
| Apixabanbrand: Eliquis | 13 | — |
| Lipase/Protease/Amylasebrand: Creon | 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 , 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.
Practice location
Mailing address
Additional practice locations (1)
- 75 Francis StBoston, MA 02115-6106Phone: (617) 732-5500
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2026-02-03
- Certified
- 2026-02-03
Frequently asked questions
- What is Jeffrey Clark's NPI number?
- Jeffrey Clark's National Provider Identifier (NPI) is 1710951751, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Clark's specialty?
- Jeffrey Clark is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Clark located?
- Jeffrey Clark's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114.
- What is Jeffrey Clark's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Clark is (617) 724-4000.
- Does Jeffrey Clark accept Medicare?
- Jeffrey Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Clark's NPI active?
- Yes — Jeffrey Clark's NPI (1710951751) is active in the NPPES registry as of the last update on 2026-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.