Quick answers
- Does Anna Astashchanka accept Medicare assignment?
- Yes. Medicare's clinician data says Anna Astashchanka 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 Anna Astashchanka see?
- In 2024, CMS data shows 26 Original Medicare patients and 33 services for Anna Astashchanka. This counts Original Medicare only and measures volume, not quality.
- What is Anna Astashchanka's NPI number?
- 1821594359. 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 Anna Astashchanka, 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 | 26 |
|---|---|
| Services billed to Medicare | 33 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Critical care, first 30-74 minutes (99291)21 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%
- Heart failure62%
- Diabetes58%
- Chronic kidney disease54%
- Ischemic heart disease46%
Hospitals where Anna Astashchanka works
Medicare's Facility Affiliation Data lists Anna Astashchanka 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.
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
- Sharp Coronado Hospital and Healthcare CenterCoronado, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050234
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100
Practice locations
Addresses where Anna Astashchanka is enrolled with Medicare (CMS data updated October 2, 2026).
- 751 Med Ctr CtChula Vista, CA 91911 (619) 502‑5800
- 7901 Frost StSan Diego, CA 92123 (858) 939‑3400
Group practices
Medicare enrollment lists Anna Astashchanka as a member of these groups (CMS data updated October 2, 2026).
- Emergency and Acute Care Medical Corporation422 clinicians in the group
- Chest Medicine and Critical Care Medical Group Inc25 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
Other pulmonologists in Chula Vista
Clinicians with the same Medicare primary specialty in Chula Vista, CA — not a recommendation.
Other clinicians in Emergency and Acute Care Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821594359 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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