William Jawien, MD
NPI 1417904020 · Hematology & Oncology Physician · Fresno, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Jawien, MD is a Hematology & Oncology Physician provider in Fresno, CA (NPI 1417904020).
Provider details
- NPI number
- 1417904020
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G74904 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
12,277 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,556 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,484 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,203 | $130 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,026 | $10 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 928 | $15 |
| Iron Level83540 | 433 | $6 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 173 | 31 |
| Amino Ac 8 %/D14w/Electrolytesbrand: Clinimix E | 87 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 79 | 23 |
| Warfarin Sodium | 67 | — |
| Ondansetronbrand: Ondansetron Odt | 64 | 24 |
| Apixabanbrand: Eliquis | 59 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,316 across 110 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
Additional practice locations (1)
- 1125 E Spruce Ave Ste 103Fresno, CA 93720-3387Phone: (559) 878-4510Fax: (559) 878-4515
Registry dates
- Enumerated
- 2006-05-28
- Last updated
- 2025-10-09
- Certified
- 2025-10-09
Frequently asked questions
- What is William Jawien's NPI number?
- William Jawien's National Provider Identifier (NPI) is 1417904020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Jawien's specialty?
- William Jawien is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William Jawien located?
- William Jawien's practice location on file with NPPES is 7130 N Millbrook Ave, Fresno, CA 93720-3347.
- What is William Jawien's phone number?
- The practice phone number listed in the NPPES registry for William Jawien is (559) 326-1222.
- Does William Jawien accept Medicare?
- William Jawien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Jawien's NPI active?
- Yes — William Jawien's NPI (1417904020) is active in the NPPES registry as of the last update on 2025-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.