Stephen A. Agatston, MD

Medicare activity in 2024

Official CMS public-use data for Stephen A. Agatston, 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. Injection, gadobutrol, 0.1 ml (A9585)13,838 services
2. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)12,700 services
3. Screening 3d breast mammography (77063)1,678 services
4. Screening mammography (77067)1,673 services
5. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)325 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 cholesterol75%
• High blood pressure61%
• Arthritis43%
• Ischemic heart disease23%
• Osteoporosis23%
• Anxiety21%

Hospitals where Stephen A. Agatston works

Medicare's Facility Affiliation Data lists Stephen A. Agatston 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.

• Ascension Seton Cedar ParkCedar Park, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 670043
• CHRISTUS Santa Rosa Hospital-San MarcosSan Marcos, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450272
• St David's Medical CenterAustin, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450431

Practice locations

Addresses where Stephen A. Agatston is enrolled with Medicare (CMS data updated October 2, 2026).

• 12800 W Parmer Lane, Suite 200Cedar Park, TX 78613 (512) 485‑7199
• 8720 Chalk Knoll DrAustin, TX 78735 (512) 795‑5100

Group practices

Medicare enrollment lists Stephen A. Agatston as a member of these groups (CMS data updated October 2, 2026).

• Singleton Associates PA838 clinicians in the group
• Austin Radiological Association127 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Texas →

Other radiologists in Texas

Clinicians with the same Medicare primary specialty in Texas — not a recommendation.

• John M. Barkley, MD
• James P. Willis, MD
• Robert E. Lynch, MD
• Cynthia S. Sherry, MD
• Praveen G. Ranganath, MD
• Jason Chandrapal, MD
• Chih-Yang Juan, DO
• Amit Mittal, MD

All radiologists in Texas →

Other clinicians in Singleton Associates PA

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

• Robert E. Lynch, MD
• Aaditya Nagaraj, MD
• Praveen G. Ranganath, MD
• Jerry Powell, MD
• Esmeralda Carrillo, PA
• Christopher Porter, 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