Jaime Z. Santos Jr., MD

Medicare activity in 2024

Official CMS public-use data for Jaime Z. Santos 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.

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)234 services
2. Insertion of needle into vein for collection of blood sample (36415)184 services
3. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)128 services
4. Blood test, comprehensive group of blood chemicals (80053)127 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)118 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%
• Arthritis31%
• Anxiety31%
• Ischemic heart disease28%
• Diabetes27%

Hospitals where Jaime Z. Santos Jr. works

Medicare's Facility Affiliation Data lists Jaime Z. Santos 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.

• Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260077
• Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260020
• Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 260108

Practice locations

Addresses where Jaime Z. Santos Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 13303 Tesson Ferry Rd, Suite 100Saint Louis, MO 63128 (314) 722‑4741

Group practices

Medicare enrollment lists Jaime Z. Santos Jr. as a member of this group (CMS data updated October 2, 2026).

• American Multispecialty Group Inc116 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Missouri →

Other family doctors in Saint Louis

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

• Gretchen M. Landgraf, DO
• Jarrett G. Dawson
• Jeremy D. Defoe, DO
• Christian Verry, MD
• Jack A. Galbraith, MD
• Ashley N. Denmark, DO
• Mark C. Howard, MD
• Jason M. Maddox, DO

All family doctors in Saint Louis →

Other clinicians in American Multispecialty Group Inc

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

• William Knapp, MD
• Susan C. Ferbet, NP
• Stephanie M. Bingham, NP
• Dermond C. Henry, DO
• Daniel J. Meshoto, DO
• Bethany M. Stern

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