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Internal Medicine

Charles B. Dinwiddie Jr.

Works at hospitals in Muncie, IN · Indiana

Summary

Charles B. Dinwiddie Jr. is an internal medicine doctor at 3607 N Everbrook Ln, Muncie, IN 47304. Phone: (765) 288-8577. Accepts Medicare assignment. In 2024, Charles B. Dinwiddie Jr. had 192 Original Medicare patients and 1,214 services. NPI 1477526200. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 3607 N Everbrook Ln, Muncie, IN 47304 · Directions (1 more location)
  • Phone: (765) 288‑8577
  • Medicare: Accepts Medicare assignment
  • Hospital: Indiana University Health Ball Memorial Hospital
  • Group practice: US Therapy Inc
  • Medical school: Indiana University School Of Medicine · graduated 1984 (42 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Charles B. Dinwiddie Jr., 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 Charles B. Dinwiddie Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Charles B. Dinwiddie Jr. 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 Charles B. Dinwiddie Jr. see?
In 2024, CMS data shows 192 Original Medicare patients and 1,214 services for Charles B. Dinwiddie Jr.. This counts Original Medicare only and measures volume, not quality.
What is Charles B. Dinwiddie Jr.'s NPI number?
1477526200. 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 Charles B. Dinwiddie Jr., 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 patients192
Services billed to Medicare1,214
Different services or procedures23
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)482 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)237 services
  3. Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage (90656)100 services
  4. Administration of influenza virus vaccine (G0008)100 services
  5. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)33 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%
  • Arthritis45%
  • Diabetes35%
  • Ischemic heart disease24%
  • Chronic kidney disease20%

Hospitals where Charles B. Dinwiddie Jr. works

Medicare's Facility Affiliation Data lists Charles B. Dinwiddie Jr. 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 Charles B. Dinwiddie Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Charles B. Dinwiddie Jr. as a member of this group (CMS data updated October 2, 2026).

  • US Therapy Inc82 clinicians in the group

Specialties

Find other Internal Medicine doctors in Indiana →

Other internal medicine doctors in Muncie

Clinicians with the same Medicare primary specialty in Muncie, IN — not a recommendation.

All internal medicine doctors in Muncie →

Other clinicians in US Therapy Inc

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

Clinician information

Medical schoolIndiana University School Of Medicine
Graduation year1984 (42 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477526200
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