John Schwerkoske, MD
NPI 1912260829 · Hematology & Oncology Physician · Chula Vista, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Schwerkoske, MD is a Hematology & Oncology Physician provider in Chula Vista, CA (NPI 1912260829).
Provider details
- NPI number
- 1912260829
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A136414 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
238 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 94 | $144 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 77 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $95 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 19 | $16 |
Typical Medicare-allowed amounts for these services range $16–$144 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 220 | 76 |
| Letrozole | 113 | 34 |
| Alendronate Sodium | 66 | 26 |
| Famotidine | 54 | 26 |
| Ondansetron Hcl | 51 | 32 |
| Hydroxyurea | 44 | 14 |
| Pantoprazole Sodium | 42 | 22 |
| Apixabanbrand: Eliquis | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,264 across 167 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-17
- Last updated
- 2022-01-03
- Certified
- 2022-01-03
Frequently asked questions
- What is John Schwerkoske's NPI number?
- John Schwerkoske's National Provider Identifier (NPI) is 1912260829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Schwerkoske's specialty?
- John Schwerkoske is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Schwerkoske located?
- John Schwerkoske's practice location on file with NPPES is 450 4th Ave Ste 311, Chula Vista, CA 91910-4429.
- What is John Schwerkoske's phone number?
- The practice phone number listed in the NPPES registry for John Schwerkoske is (619) 371-9156.
- Does John Schwerkoske accept Medicare?
- John Schwerkoske is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Schwerkoske's NPI active?
- Yes — John Schwerkoske's NPI (1912260829) is active in the NPPES registry as of the last update on 2022-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.