Michael Diiorio, MD
NPI 1598224859 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Diiorio, MD is a Rheumatology Physician provider in Boston, MA (NPI 1598224859).
Provider details
- NPI number
- 1598224859
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
122 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 | 48 | $137 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 41 | $179 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $98 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 12 | $70 |
Typical Medicare-allowed amounts for these services range $70–$179 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 117 | 32 |
| Colchicine | 53 | 13 |
| Adalimumabbrand: Humira(cf) Pen | 31 | — |
| Methotrexate Sodiumbrand: Methotrexate | 30 | — |
| Allopurinol | 30 | — |
| Alendronate Sodium | 27 | — |
| Celecoxib | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$216 across 10 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)
- 250 Pond StBraintree, MA 02184-5351Phone: (178) 134-8250
Registry dates
- Enumerated
- 2019-03-17
- Last updated
- 2024-06-10
- Certified
- 2024-06-10
Frequently asked questions
- What is Michael Diiorio's NPI number?
- Michael Diiorio's National Provider Identifier (NPI) is 1598224859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Diiorio's specialty?
- Michael Diiorio is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Diiorio located?
- Michael Diiorio's practice location on file with NPPES is 60 Fenwood Rd, Boston, MA 02115-6128.
- What is Michael Diiorio's phone number?
- The practice phone number listed in the NPPES registry for Michael Diiorio is (617) 732-5500.
- Does Michael Diiorio accept Medicare?
- Michael Diiorio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Diiorio's NPI active?
- Yes — Michael Diiorio's NPI (1598224859) is active in the NPPES registry as of the last update on 2024-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.