Hussein Assi, M.D
NPI 1235544362 · Medical Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hussein Assi, M.D is a Medical Oncology Physician provider in Boston, MA (NPI 1235544362).
Provider details
- NPI number
- 1235544362
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 283659 (MA)
Specialties & taxonomies
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 tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
119 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 40 | $102 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 38 | $151 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 30 | $180 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $136 |
Typical Medicare-allowed amounts for these services range $102–$180 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dexamethasone | 86 | 19 |
| Olanzapine | 46 | — |
| Prochlorperazine Maleate | 34 | 19 |
| Trifluridine/Tipiracil Hclbrand: Lonsurf | 22 | — |
| Apixabanbrand: Eliquis | 18 | — |
| Pralsetinibbrand: Gavreto | 13 | — |
| Everolimus | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,319 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-27
- Last updated
- 2026-05-20
- Certified
- 2026-05-20
Frequently asked questions
- What is Hussein Assi's NPI number?
- Hussein Assi's National Provider Identifier (NPI) is 1235544362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hussein Assi's specialty?
- Hussein Assi is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hussein Assi located?
- Hussein Assi's practice location on file with NPPES is 830 Harrison Avenue, 3rd Fl, Boston, MA 02118-2905.
- What is Hussein Assi's phone number?
- The practice phone number listed in the NPPES registry for Hussein Assi is (617) 638-6428.
- Does Hussein Assi accept Medicare?
- Hussein Assi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hussein Assi's NPI active?
- Yes — Hussein Assi's NPI (1235544362) is active in the NPPES registry as of the last update on 2026-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.