Quick answers
- Does Sabina R. Wallach accept Medicare assignment?
- Yes. Medicare's clinician data says Sabina R. Wallach 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 Sabina R. Wallach see?
- In 2024, CMS data shows 438 Original Medicare patients and 102,895 services for Sabina R. Wallach. This counts Original Medicare only and measures volume, not quality.
- What is Sabina R. Wallach's NPI number?
- 1871529081. 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 Sabina R. Wallach, 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 | 438 |
|---|---|
| Services billed to Medicare | 102,895 |
| Different services or procedures | 95 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, ferric carboxymaltose, 1 mg (J1439)16,500 services
- Injection, denosumab, 1 mg (J0897)13,320 services
- Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units (Q5106)6,000 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)1,008 services
- Insertion of needle into vein for collection of blood sample (36415)974 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 pressure64%
- Osteoporosis50%
- Arthritis49%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)46%
- Ischemic heart disease23%
Hospitals where Sabina R. Wallach works
Medicare's Facility Affiliation Data lists Sabina R. Wallach 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.
- Scripps Green HospitalLa Jolla, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050424
- Scripps Memorial Hospital - EncinitasEncinitas, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050503
- Scripps Memorial Hospital La JollaLa Jolla, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050324
- Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050077
Practice locations
Addresses where Sabina R. Wallach is enrolled with Medicare (CMS data updated October 2, 2026).
- 9850 Genesee Ave, Suite 400La Jolla, CA 92037 (858) 558‑8666
Group practices
Medicare enrollment lists Sabina R. Wallach as a member of this group (CMS data updated October 2, 2026).
- Medical Oncology Associates of San Diego a Medical Group Inc14 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in La Jolla
Clinicians with the same Medicare primary specialty in La Jolla, CA — not a recommendation.
Other clinicians in Medical Oncology Associates of San Diego a Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 (52 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) | 1871529081 |
| 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