Leah Portnow, M.D.
NPI 1184984833 · Diagnostic Radiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leah Portnow, M.D. is a Diagnostic Radiology Physician provider in Boston, MA (NPI 1184984833).
Provider details
- NPI number
- 1184984833
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- TRN17296 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
14 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
1,388 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) |
|---|---|---|
| Screening Mammography77067 | 348 | $37 |
| Screening 3d Breast Mammography77063 | 345 | $29 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 138 | $29 |
| Diagnostic Mammography of 1 Breast77065 | 111 | $40 |
| Limited Ultrasound Scan of 1 Breast76642 | 100 | $35 |
| Diagnostic Mammography of Both Breasts77066 | 78 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-29
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Leah Portnow's NPI number?
- Leah Portnow's National Provider Identifier (NPI) is 1184984833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leah Portnow's specialty?
- Leah Portnow is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Leah Portnow located?
- Leah Portnow's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Leah Portnow's phone number?
- The practice phone number listed in the NPPES registry for Leah Portnow is (617) 732-6269.
- Does Leah Portnow accept Medicare?
- Leah Portnow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leah Portnow's NPI active?
- Yes — Leah Portnow's NPI (1184984833) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.