Charlotte L. Chang, MD

Medicare activity in 2024

Official CMS public-use data for Charlotte L. Chang, 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.

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)273 services
2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)264 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)81 services
4. Hemoglobin a1c level (83036)75 services
5. Influenza vaccine split virus, preservative free (90662)44 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 cholesterol73%
• High blood pressure66%
• Arthritis44%
• Diabetes21%
• Osteoporosis21%
• Ischemic heart disease19%

Hospitals where Charlotte L. Chang works

Medicare's Facility Affiliation Data lists Charlotte L. Chang 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.

• Boone Hospital CenterColumbia, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260068
• University of Missouri Health CareColumbia, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260141

Practice locations

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

• 900 W Nifong Blvd, Suite 101Columbia, MO 65203 (573) 815‑6640

Group practices

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

• Boone Physician Services LLC250 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Missouri →

Other internal medicine doctors in Columbia

Clinicians with the same Medicare primary specialty in Columbia, MO — not a recommendation.

• Abigail K. Emerson, MD
• Morgan Green, DO
• Julia S. Halsey, MD
• Lyndell D. Scoles, MD
• Clayton J. Butcher, MD
• John A. Fernando, MD
• Venkata Kenguva, MD
• Kevin D. Halsey, MD

All internal medicine doctors in Columbia →

Other clinicians in Boone Physician Services LLC

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

• Noah B. Cunningham
• Richard Downey, MD
• Nakeya L. Steele, NP
• Jessica D. Chaney, PT
• Denise J. Freidel, DO
• Kathryn Darkow

Clinician information

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