Mark Matza
NPI 1306264577 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Matza is a Rheumatology Physician provider in Boston, MA (NPI 1306264577).
Provider details
- NPI number
- 1306264577
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 278791 (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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,033 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 | 198 | $138 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 191 | $102 |
| 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 | 148 | $17 |
| 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 | 114 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 198 | 63 |
| Tocilizumabbrand: Actemra Actpen | 154 | 19 |
| Methotrexate Sodiumbrand: Methotrexate | 105 | 29 |
| Allopurinol | 105 | 25 |
| Hydroxychloroquine Sulfate | 102 | 26 |
| Alendronate Sodium | 53 | 20 |
| Tocilizumabbrand: Actemra | 51 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,579 across 6 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
Additional practice locations (1)
- 75 Francis StBoston, MA 02115-6110Phone: (617) 732-5500
Registry dates
- Enumerated
- 2014-04-03
- Last updated
- 2026-04-15
- Certified
- 2026-04-15
Frequently asked questions
- What is Mark Matza's NPI number?
- Mark Matza's National Provider Identifier (NPI) is 1306264577, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Matza's specialty?
- Mark Matza is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Matza located?
- Mark Matza's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2696.
- What is Mark Matza's phone number?
- The practice phone number listed in the NPPES registry for Mark Matza is (617) 726-7938.
- Does Mark Matza accept Medicare?
- Mark Matza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Matza's NPI active?
- Yes — Mark Matza's NPI (1306264577) is active in the NPPES registry as of the last update on 2026-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.