Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Obstetrics/Gynecology

Mari Charisse B. Trinidad, MD

Works at hospitals in Rochester, MN · Minnesota

Summary

Dr. Mari Charisse B. Trinidad, MD is an OB-GYN at 1400 Bellinger St, Eau Claire, WI 54703. Phone: (715) 838-5222. Accepts Medicare assignment. In 2024, Mari Charisse B. Trinidad had 18 Original Medicare patients and 78 services. NPI 1336386093. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 1400 Bellinger St, Eau Claire, WI 54703 · Directions (3 more locations)
  • Phone: (715) 838‑5222
  • Medicare: Accepts Medicare assignment
  • Hospital: Mayo Clinic Hospital Rochester
  • Group practice: Mayo Clinic (+1 more)
  • Medical school: graduated 2003 (23 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mari Charisse B. Trinidad, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Mari Charisse B. Trinidad accept Medicare assignment?
Yes. Medicare's clinician data says Mari Charisse B. Trinidad accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Mari Charisse B. Trinidad see?
In 2024, CMS data shows 18 Original Medicare patients and 78 services for Mari Charisse B. Trinidad. This counts Original Medicare only and measures volume, not quality.
What is Mari Charisse B. Trinidad's NPI number?
1336386093. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Mari Charisse B. Trinidad, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients18
Services billed to Medicare78
Different services or procedures18
Participating Medicare providerYes
Average age of these patients33

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • Anxiety75%
  • Depression67%

Hospitals where Mari Charisse B. Trinidad works

Medicare's Facility Affiliation Data lists Mari Charisse B. Trinidad at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Mari Charisse B. Trinidad is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mari Charisse B. Trinidad as a member of these groups (CMS data updated October 2, 2026).

  • Mayo Clinic4,956 clinicians in the group
  • Mayo Clinic Health System-Northwest Wisconsin Region Inc802 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Wisconsin →

Other OB-GYNs in Eau Claire

Clinicians with the same Medicare primary specialty in Eau Claire, WI — not a recommendation.

All OB-GYNs in Eau Claire →

Other clinicians in Mayo Clinic

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2003 (23 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1336386093
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians