Leah Biller
NPI 1063850634 · Medical Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leah Biller is a Medical Oncology Physician provider in Boston, MA (NPI 1063850634).
Provider details
- NPI number
- 1063850634
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 278341 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
368 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 | 86 | $124 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 70 | $168 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 57 | $82 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 50 | $151 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $102 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-05
- Last updated
- 2019-05-31
Frequently asked questions
- What is Leah Biller's NPI number?
- Leah Biller's National Provider Identifier (NPI) is 1063850634, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leah Biller's specialty?
- Leah Biller is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Leah Biller located?
- Leah Biller's practice location on file with NPPES is 450 Brookline Ave, Boston, MA 02215-5418.
- What is Leah Biller's phone number?
- The practice phone number listed in the NPPES registry for Leah Biller is (617) 632-4500.
- Does Leah Biller accept Medicare?
- Leah Biller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leah Biller's NPI active?
- Yes — Leah Biller's NPI (1063850634) is active in the NPPES registry as of the last update on 2019-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.