Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Armando F Siqueiros, MD

Individual provider Internal Medicine Physician · NPI 1699758540

Dr. Armando F Siqueiros, MD practises Internal Medicine in San Luis Obispo, California. Graduated from University of California, Irvine, California College of Medicine in 1989, 37 years ago. Practices with David B. Hammer, a 116-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

842 California Blvd
San Luis Obispo, CA 93401-2902
Phone: (805) 549-5277
Fax: (805) 549-5293
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G71396 (CA)

Record details

NPI number1699758540
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 23, 2005
Last updated in NPPESMay 9, 2023
Certification dateMay 9, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice David B. Hammer — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients221
Services billed 547 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Central Coast Home Health Inc Home health agency · San Luis Obispo, CA · listed as Central Coast Home Health, Inc
  • Dignity Health Home Health Home health agency · Santa Maria, CA · listed as Dignity Health
  • Adventist Health Sierra Vista Hospital · San Luis Obispo, CA
  • French Hospital Medical Center Hospital · San Luis Obispo, CA
  • Marian Regional Medical Center Hospital · Santa Maria, CA

Colleagues at David B. Hammer

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 116 clinicians in the practice; 12 are shown here.

Other providers in San Luis Obispo