Quick answers
- Does Ana Maria Calderon accept Medicare assignment?
- Yes. Medicare's clinician data says Ana Maria Calderon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ana Maria Calderon see?
- In 2024, CMS data shows 267 Original Medicare patients and 2,196 services for Ana Maria Calderon. This counts Original Medicare only and measures volume, not quality.
- What is Ana Maria Calderon's NPI number?
- 1578845574. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ana Maria Calderon, 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.
| Original Medicare patients | 267 |
|---|---|
| Services billed to Medicare | 2,196 |
| Different services or procedures | 64 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)443 services
- Insertion of needle into vein for collection of blood sample (36415)243 services
- Blood test, comprehensive group of blood chemicals (80053)170 services
- Blood test, lipids (cholesterol and triglycerides) (80061)139 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)125 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 cholesterol71%
- High blood pressure69%
- Arthritis42%
- Depression27%
- Diabetes26%
- Chronic kidney disease23%
Practice locations
Addresses where Ana Maria Calderon is enrolled with Medicare (CMS data updated October 2, 2026).
- 8542 Wurzbach Rd, Physician Primecare WurzbachSan Antonio, TX 78240 (210) 616‑7300
Group practices
Medicare enrollment lists Ana Maria Calderon as a member of this group (CMS data updated October 2, 2026).
- Physician Primecare, Inc64 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Other clinicians in Physician Primecare, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578845574 |
| Corrections | Report an error or suggest an update → |
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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians