Steve Massaquoi, M.D., PH.D.
NPI 1811934813 · Neurology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steve Massaquoi, M.D., PH.D. is a Neurology Physician provider in Boston, MA (NPI 1811934813).
Provider details
- NPI number
- 1811934813
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 56107 (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
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
160 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 100 | $177 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 60 | $117 |
Typical Medicare-allowed amounts for these services range $117–$177 (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 (1)
- 41 Mall RdBurlington, MA 01805-2621Phone: (781) 744-8000
Registry dates
- Enumerated
- 2006-05-31
- Last updated
- 2023-04-04
- Certified
- 2023-04-04
Frequently asked questions
- What is Steve Massaquoi's NPI number?
- Steve Massaquoi's National Provider Identifier (NPI) is 1811934813, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steve Massaquoi's specialty?
- Steve Massaquoi is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Steve Massaquoi located?
- Steve Massaquoi's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Steve Massaquoi's phone number?
- The practice phone number listed in the NPPES registry for Steve Massaquoi is (617) 726-2000.
- Does Steve Massaquoi accept Medicare?
- Steve Massaquoi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steve Massaquoi's NPI active?
- Yes — Steve Massaquoi's NPI (1811934813) is active in the NPPES registry as of the last update on 2023-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.