Sebastian Unizony, MD
NPI 1821227745 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sebastian Unizony, MD is a Rheumatology Physician provider in Boston, MA (NPI 1821227745).
Provider details
- NPI number
- 1821227745
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 247019 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 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
626 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 | 361 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $137 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 33 | $102 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 32 | $49 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 27 | $17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 281 | 105 |
| Methotrexate Sodiumbrand: Methotrexate | 165 | 47 |
| Tocilizumabbrand: Actemra Actpen | 131 | 22 |
| Hydroxychloroquine Sulfate | 109 | 37 |
| Gabapentin | 98 | 35 |
| Duloxetine Hcl | 77 | 20 |
| Nortriptyline Hcl | 71 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$750 across 2 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
- 2009-07-13
- Last updated
- 2011-06-08
Frequently asked questions
- What is Sebastian Unizony's NPI number?
- Sebastian Unizony's National Provider Identifier (NPI) is 1821227745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sebastian Unizony's specialty?
- Sebastian Unizony is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sebastian Unizony located?
- Sebastian Unizony's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Sebastian Unizony's phone number?
- The practice phone number listed in the NPPES registry for Sebastian Unizony is (617) 726-2000.
- Does Sebastian Unizony accept Medicare?
- Sebastian Unizony is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sebastian Unizony's NPI active?
- Yes — Sebastian Unizony's NPI (1821227745) is active in the NPPES registry as of the last update on 2011-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.