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Family Practice

Deborah L. Duncan, MD

Sees patients in Fenton, MI · Michigan

Summary

Dr. Deborah L. Duncan, MD is a family doctor at 102 N Adelaide, Fenton, MI 48430. Phone: (810) 629-2245. Accepts Medicare assignment. In 2024, Deborah L. Duncan had 301 Original Medicare patients and 2,930 services. NPI 1760452247. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 102 N Adelaide, Fenton, MI 48430 · Directions (1 more location)
  • Phone: (810) 629‑2245
  • Medicare: Accepts Medicare assignment
  • Group practice: Fenton Medical Center
  • Medical school: graduated 1987 (39 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Deborah L. Duncan, 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 Deborah L. Duncan accept Medicare assignment?
Yes. Medicare's clinician data says Deborah L. Duncan 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 Deborah L. Duncan see?
In 2024, CMS data shows 301 Original Medicare patients and 2,930 services for Deborah L. Duncan. This counts Original Medicare only and measures volume, not quality.
What is Deborah L. Duncan's NPI number?
1760452247. 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 Deborah L. Duncan, 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 patients301
Services billed to Medicare2,930
Different services or procedures49
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, denosumab, 1 mg (J0897)1,080 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)444 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)249 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)147 services
  5. Urinalysis, manual test (81002)144 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 pressure73%
  • Arthritis46%
  • Chronic kidney disease30%
  • Depression29%
  • Anxiety27%

Practice locations

Addresses where Deborah L. Duncan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Deborah L. Duncan as a member of this group (CMS data updated October 2, 2026).

  • Fenton Medical Center9 clinicians in the group

Specialties

Find other Family Practice doctors in Michigan →

Other family doctors in Fenton

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

All family doctors in Fenton →

Other clinicians in Fenton Medical Center

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

Clinician information

CredentialMD
Graduation year1987 (39 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1760452247
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians