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Family Practice

G B. Dowden Iii, MD

Works at hospitals in Port Huron, MI · Michigan

Summary

Dr. G B. Dowden Iii, MD is a family doctor at 1163 S Carney Dr, Saint Clair, MI 48079. Phone: (810) 561-8450. Accepts Medicare assignment. In 2024, G B. Dowden Iii had 31 Original Medicare patients and 60 services. NPI 1750379194. 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: Family doctor (Medicare lists Family Practice)
  • Address: 1163 S Carney Dr, Saint Clair, MI 48079 · Directions (1 more location)
  • Phone: (810) 561‑8450
  • Medicare: Accepts Medicare assignment
  • Hospital: McLaren Port Huron
  • Group practice: McLaren Port Huron
  • Medical school: Indiana University School Of Medicine · graduated 2003 (23 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about G B. Dowden Iii, 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 G B. Dowden Iii accept Medicare assignment?
Yes. Medicare's clinician data says G B. Dowden Iii 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 G B. Dowden Iii see?
In 2024, CMS data shows 31 Original Medicare patients and 60 services for G B. Dowden Iii. This counts Original Medicare only and measures volume, not quality.
What is G B. Dowden Iii's NPI number?
1750379194. 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 G B. Dowden Iii, 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 patients31
Services billed to Medicare60
Different services or procedures10
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)23 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 cholesterol75%
  • High blood pressure74%
  • Arthritis61%
  • Chronic kidney disease42%

Hospitals where G B. Dowden Iii works

Medicare's Facility Affiliation Data lists G B. Dowden Iii 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.

  • McLaren Port HuronPort Huron, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230216

Practice locations

Addresses where G B. Dowden Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists G B. Dowden Iii as a member of this group (CMS data updated October 2, 2026).

  • McLaren Port Huron52 clinicians in the group

Specialties

Find other Family Practice doctors in Michigan →

Other family doctors in Michigan

Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.

All family doctors in Michigan →

Other clinicians in McLaren Port Huron

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

Clinician information

CredentialMD
Medical schoolIndiana University School Of Medicine
Graduation year2003 (23 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750379194
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