Quick answers
- Does John P. Schwerkoske accept Medicare assignment?
- Yes. Medicare's clinician data says John P. Schwerkoske 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 John P. Schwerkoske see?
- In 2024, CMS data shows 86 Original Medicare patients and 24,034 services for John P. Schwerkoske. This counts Original Medicare only and measures volume, not quality.
- What is John P. Schwerkoske's NPI number?
- 1912260829. 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 John P. Schwerkoske, 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 | 86 |
|---|---|
| Services billed to Medicare | 24,034 |
| Different services or procedures | 66 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Administration of chemotherapy into vein, 1 hour or less (96413)94 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)77 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)48 services
- Injection of drug or substance under skin or into muscle (96372)19 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)51%
- Diabetes45%
- Arthritis43%
- Ischemic heart disease35%
Practice locations
Addresses where John P. Schwerkoske is enrolled with Medicare (CMS data updated October 2, 2026).
- 2067 W Vista Way, Suite 295Vista, CA 92083 (526) 735‑3226
Group practices
Medicare enrollment lists John P. Schwerkoske as a member of this group (CMS data updated October 2, 2026).
- The Oncology Institute Ca, a Professional Corporation113 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in The Oncology Institute Ca, a Professional Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1912260829 |
| 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