Armando F. Siqueiros, MD

Medicare activity in 2024

Official CMS public-use data for Armando F. Siqueiros, 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 low level od decision making, if using time, 20 minutes or more (99213)327 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)154 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)49 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 pressure71%
• Arthritis43%
• Atrial fibrillation26%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)17%
• Ischemic heart disease16%

Hospitals where Armando F. Siqueiros works

Medicare's Facility Affiliation Data lists Armando F. Siqueiros 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.

• Adventist Health Sierra VistaSan Luis Obispo, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050506
• French Hospital Medical CenterSan Luis Obispo, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050232
• Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050107

Practice locations

Addresses where Armando F. Siqueiros is enrolled with Medicare (CMS data updated October 2, 2026).

• 1051 Las Tablas RdTempleton, CA 93465
• 842 California BlvdSan Luis Obispo, CA 93401 (805) 549‑5277

Group practices

Medicare enrollment lists Armando F. Siqueiros as a member of this group (CMS data updated October 2, 2026).

• David B. Hammer123 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Templeton

Clinicians with the same Medicare primary specialty in Templeton, CA — not a recommendation.

• Steven J. McAllen, MD
• Niraj Bhalani, DO
• Avinaj M. John, DO
• Kevin Colton, MD
• Suvarna Choudhari, MD
• Gary E. Foresman, MD
• Anphong L. Nguyen, MD
• Gregg Ellison, MD

All internal medicine doctors in Templeton →

Other clinicians in David B. Hammer

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

• Steven J. McAllen, MD
• Jesse D. Larson, DPM
• Craig M. Chanin, MD
• Gerald P. Keane, MD
• Timothy Kuang, MD
• Kathryn H. Estopinal, NP

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