Ana Rivas Mejia, MD

Medicare activity in 2024

Official CMS public-use data for Ana Rivas Mejia, 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)291 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)252 services
3. Dxa bone density measurement of hip, pelvis, spine (77080)250 services
4. Blood test, comprehensive group of blood chemicals (80053)201 services
5. Blood test, thyroid stimulating hormone (tsh) (84443)117 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 pressure72%
• Arthritis51%
• Diabetes39%
• Osteoporosis35%
• Chronic kidney disease26%

Hospitals where Ana Rivas Mejia works

Medicare's Facility Affiliation Data lists Ana Rivas Mejia 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 Ana Rivas Mejia is enrolled with Medicare (CMS data updated October 2, 2026).

• 3801 S National Ave 9th Fl, Glycemic Mgmt ServicesSpringfield, MO 65807 (417) 269‑5158
• 960 E Walnut Lawn, 201 Adult Medicine and Endocrinology SpecialiSpringfield, MO 65807 (417) 269‑4450

Group practices

Medicare enrollment lists Ana Rivas Mejia as a member of this group (CMS data updated October 2, 2026).

• Lester E Cox Medical Centers246 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in Missouri →

Other endocrinologists in Springfield

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

• Muriel Tania Go, MD
• Rani K. Nair, MD
• Nicola W. Gathaiya, MD
• Jubran Afzal Khan Rind, MD
• Vinay Singh, MD
• Brian Robinson, DO

All endocrinologists in Springfield →

Other clinicians in Lester E Cox Medical Centers

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

• Sarah E. Smitherman, MD
• Darryl W. Campbell, DO
• James E. Van Riessen, MD
• William K. Rosen, MD
• Muriel Tania Go, MD
• Herman Singh, 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