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

Emergency Medicine

Tristan L. Davis, DO

Works at hospitals in Shelby, MI · Grand Haven, MI · Muskegon, MI · Michigan

Summary

Dr. Tristan L. Davis, DO is an emergency medicine doctor at 1500 E Sherman Blvd, Mercy Health, Muskegon, MI 49444. Phone: (231) 728-4601. Accepts Medicare assignment. In 2024, Tristan L. Davis had 198 Original Medicare patients and 236 services. NPI 1174044259. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Tristan L. Davis, 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 Tristan L. Davis accept Medicare assignment?
Yes. Medicare's clinician data says Tristan L. Davis 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 Tristan L. Davis see?
In 2024, CMS data shows 198 Original Medicare patients and 236 services for Tristan L. Davis. This counts Original Medicare only and measures volume, not quality.
What is Tristan L. Davis's NPI number?
1174044259. 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 Tristan L. Davis, 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 patients198
Services billed to Medicare236
Different services or procedures21
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)108 services
  2. Emergency department visit with moderate level of medical decision making (99284)47 services
  3. Critical care, first 30-74 minutes (99291)45 services

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).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis56%
  • Chronic kidney disease46%
  • Anxiety45%
  • Heart failure45%

Hospitals where Tristan L. Davis works

Medicare's Facility Affiliation Data lists Tristan L. Davis 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 Tristan L. Davis is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Tristan L. Davis as a member of these groups (CMS data updated October 2, 2026).

  • Lake Michigan Emergency Specialists, PLLC36 clinicians in the group
  • Lake Michigan Observation Services PLLC27 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Michigan →

Other emergency medicine doctors in Muskegon

Clinicians with the same Medicare primary specialty in Muskegon, MI — not a recommendation.

All emergency medicine doctors in Muskegon →

Other clinicians in Lake Michigan Emergency Specialists, PLLC

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

Clinician information

CredentialDO
Medical schoolMichigan State University College Of Osteopathic Medicine
Graduation year2017 (9 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174044259
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