Michael Rivera Rios, MD
NPI 1255872164 · Emergency Medicine Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Rivera Rios, MD is a Emergency Medicine Physician provider in Hartford, CT (NPI 1255872164).
Provider details
- NPI number
- 1255872164
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34715 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
267 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 153 | $178 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 50 | $123 |
| Critical Care, First 30-74 Minutes99291 | 47 | $216 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 17 | $72 |
Typical Medicare-allowed amounts for these services range $72–$216 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 23 | 23 |
| Prednisone | 21 | 20 |
| Naproxen | 16 | 16 |
| Cephalexin | 14 | 14 |
| Meclizine Hcl | 13 | 13 |
| Omeprazole | 13 | 12 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 12 | 12 |
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.
Practice location
Mailing address
Additional practice locations (3)
- 100 Grand StNew Britain, CT 06052Phone: (860) 224-5771
- Carretera 3 Km. 8.3Ave 65 De InfanteriaCarolina, PR 00984Phone: (787) 757-1800
- Hc 02 Box 5553Lares, PR 00669Phone: (787) 244-0751
Registry dates
- Enumerated
- 2017-03-10
- Last updated
- 2022-05-17
- Certified
- 2022-05-17
Frequently asked questions
- What is Michael Rivera Rios's NPI number?
- Michael Rivera Rios's National Provider Identifier (NPI) is 1255872164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Rivera Rios's specialty?
- Michael Rivera Rios is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Rivera Rios located?
- Michael Rivera Rios's practice location on file with NPPES is 80 Seymour St, Hartford, CT 06102.
- What is Michael Rivera Rios's phone number?
- The practice phone number listed in the NPPES registry for Michael Rivera Rios is (860) 224-5771.
- Does Michael Rivera Rios accept Medicare?
- Michael Rivera Rios is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Rivera Rios's NPI active?
- Yes — Michael Rivera Rios's NPI (1255872164) is active in the NPPES registry as of the last update on 2022-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.