Mark Leick, MD
NPI 1912325143 · Medical Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Leick, MD is a Medical Oncology Physician provider in Boston, MA (NPI 1912325143).
Provider details
- NPI number
- 1912325143
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 270206 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
224 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 224 | $124 |
Typical Medicare-allowed amounts for these services range $124–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 75 Francis StBoston, MA 02115-6106Phone: (617) 732-5500
- The Johns Hopkins Hospital 1800 Orleans StBaltimore, MD 21287-0001Phone: (410) 955-3613
Registry dates
- Enumerated
- 2014-04-04
- Last updated
- 2026-01-22
- Certified
- 2026-01-22
Frequently asked questions
- What is Mark Leick's NPI number?
- Mark Leick's National Provider Identifier (NPI) is 1912325143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Leick's specialty?
- Mark Leick is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Leick located?
- Mark Leick's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Mark Leick's phone number?
- The practice phone number listed in the NPPES registry for Mark Leick is (520) 861-8037.
- Does Mark Leick accept Medicare?
- Mark Leick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Leick's NPI active?
- Yes — Mark Leick's NPI (1912325143) is active in the NPPES registry as of the last update on 2026-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.