Michael Mariorenzi, MD
NPI 1861870321 · Orthopaedic Surgery Physician · Cranston, RI
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Mariorenzi, MD is a Orthopaedic Surgery Physician provider in Cranston, RI (NPI 1861870321).
Provider details
- NPI number
- 1861870321
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD17077 (RI)
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
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
817 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 177 | $90 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 148 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $129 |
| X-Ray of Knee, 3 Views73562 | 124 | $49 |
| X-Ray of Hip, 2-3 Views73502 | 91 | $46 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 109 | 41 |
| Prednisone | 75 | 68 |
| Ibuprofen | 24 | — |
| Cephalexin | 23 | 18 |
| Methocarbamol | 17 | — |
| Oxycodone Hcl | 16 | 13 |
| Tramadol Hcl | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$204 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
- 2015-05-15
- Last updated
- 2023-05-23
- Certified
- 2023-05-23
Frequently asked questions
- What is Michael Mariorenzi's NPI number?
- Michael Mariorenzi's National Provider Identifier (NPI) is 1861870321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Mariorenzi's specialty?
- Michael Mariorenzi is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Mariorenzi located?
- Michael Mariorenzi's practice location on file with NPPES is 725 Reservoir Ave Ste 101, Cranston, RI 02910-4450.
- What is Michael Mariorenzi's phone number?
- The practice phone number listed in the NPPES registry for Michael Mariorenzi is (401) 944-3800.
- Does Michael Mariorenzi accept Medicare?
- Michael Mariorenzi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Mariorenzi's NPI active?
- Yes — Michael Mariorenzi's NPI (1861870321) is active in the NPPES registry as of the last update on 2023-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.