Jean Y. Guan, MD

Medicare activity in 2024

Official CMS public-use data for Jean Y. Guan, 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. Insertion of needle into vein for collection of blood sample (36415)817 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)662 services
3. Blood test, basic group of blood chemicals (calcium, total) (80048)345 services
4. Blood test, comprehensive group of blood chemicals (80053)331 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)312 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%
• Arthritis44%
• Osteoporosis34%
• Chronic kidney disease30%
• Diabetes25%

Hospitals where Jean Y. Guan works

Medicare's Facility Affiliation Data lists Jean Y. Guan 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.

• Cox Medical Center BransonBranson, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260094
• Cox Medical CentersSpringfield, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260040
• Cox Monett HospitalMonett, MO · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 261329

Practice locations

Addresses where Jean Y. Guan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1001 E Primrose, Ferrell Duncan ClinicSpringfield, MO 65807 (417) 875‑3000
• 607 W Battlefield StSpringfield, MO 65807 (417) 869‑2000

Group practices

Medicare enrollment lists Jean Y. Guan as a member of these groups (CMS data updated October 2, 2026).

• Lester E Cox Medical Centers232 clinicians in the group
• Cherry Health Center, LLC90 clinicians in the group

Specialties

• Internal Medicineprimary
• Geriatric Medicinealso

Find other Internal Medicine doctors in Missouri →

Other internal medicine doctors in Springfield

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

• Michelle Darmadi, MD
• John Waites, MD
• Sarah El Chami, MD
• Mostafa M. Elgayesh, MD
• Chukwudi Eke, MD
• Lilian Bizzocchi, MD
• Luke Nayak, MD
• Pranav Rana, MD

All internal medicine doctors in Springfield →

Other clinicians in Lester E Cox Medical Centers

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

• Heather Young
• Seth T. Knight, MD
• David C. Hicks, MD
• Rebecca L. Wiley, MD
• Lindsey Kollmeyer
• Sailesh Nayar, MD

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