NPPES file of Aug 9, 2026

Michael Joel Rivera Rios, MD

Emergency Medicine Physician · Hartford, CT

Michael Joel Rivera Rios, MD is an emergency medicine physician with a practice address in Hartford, Connecticut, and NPI 1255872164, issued on Mar 10, 2017. Check the license (Connecticut 70141, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255872164
Name
Michael Joel Rivera Rios
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
70141 CT
34715 PR
Self-reported in NPPES; status is on the state search
Practice location
80 Seymour St, Hartford, CT 06102
Phone
(860) 224-5771
Enumerated
Mar 10, 2017
Record last updated
May 17, 2022
Medicare enrollment
Enrolled (PECOS I20220527000558); accepts Medicare assignment
Medical or professional school
University Of Puerto Rico School Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 80 Seymour St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gazang Abdulla, PA-CPhysician Assistant1396566956
  2. Evelyn Abernathy, M.D.Anatomic Pathology & Clinical Pathology Physician1982680195
  3. Rimanatou Adamou-DodoFamily Nurse Practitioner1588532980
  4. Hassana Addai-Boateng, MDInternal Medicine Physician1477226777
  5. Santosh Adhikari, MDHospitalist Physician1487331450
  6. Matthew AgsaludStudent in an Organized Health Care Education/Training Program1053025676

Verify Michael Joel Rivera Rios in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 70141
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4% fewer Medicare Part D claims than the average emergency medicine physician in 2024

216 Medicare Part D claims for 161 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 24 claims were for opioids.

  1. Michael Rivera Rios216
  2. Specialty average226

Most prescribed

  1. Oxycodone Hcl23 claims
  2. Prednisone21 claims
  3. Naproxen16 claims
  4. Cephalexin14 claims
  5. Meclizine Hcl13 claims
  6. Omeprazole13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 91.3 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.4
  2. Costout of 100 · 30%56.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. The Hospital OF Central Connecticut AT New Britain General And BradleyNew Britain, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michael Joel Rivera Rios among 846 emergency medicine physician records in Connecticut

Michael Joel Rivera Rios, MD is one of 846 emergency medicine physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 76% of them.

  • NPI issued2017 · 76% of these records are older, 21% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2019 · median 2011 among the 574 with a school on file
  • Record last updated2022 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

119 emergency medicine physician records list a practice address in Hartford

They are 119 of the 6,317 NPPES records with a practice address in Hartford, and 846 emergency medicine physician records in Connecticut.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Lincoln Abbott, MDHartford, CT 061021518965433
  2. Harry Arters, DOHartford, CT 061021649253725
  3. Stanley Chartoff, M.D.Hartford, CT 061021184605198
  4. Joao Delgado, MDHartford, CT 061021457359523
  5. Michael Drescher, M.D.Hartford, CT 061021295869113
  6. Susan Dufel, M.D.Hartford, CT 061021467584185
  7. Rockman Ferrigno, MDHartford, CT 061021497774228
  8. Jeffrey Finkelstein, MDHartford, CT 061021245281914

Common questions

What is Michael Joel Rivera Rios, MD's NPI number?

Michael Joel Rivera Rios, MD's National Provider Identifier (NPI) is 1255872164, issued on Mar 10, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Michael Joel Rivera Rios, MD located?

The NPPES record lists a practice address at 80 Seymour St, Hartford, CT, 06102. Phone: (860) 224-5771. Providers update this record themselves, so call before visiting.

How can I verify Michael Joel Rivera Rios, MD's license?

NPPES lists Connecticut license number 70141, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Michael Joel Rivera Rios, MD prescribe under Medicare Part D?

In 2024, Michael Joel Rivera Rios, MD had 216 Medicare Part D claims for 161 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is Michael Joel Rivera Rios, MD's MIPS final score?

The 2023 MIPS final score is 91.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.