Warren Paroly, MD
NPI 1306981527 · Hematology & Oncology Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Paroly, MD is a Hematology & Oncology Physician provider in Oceanside, CA (NPI 1306981527).
Provider details
- NPI number
- 1306981527
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G29867 (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
19 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
1,981 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 | 613 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 599 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 269 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 197 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 195 | $137 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Prednisone | 30 |
| Acyclovir | 28 |
| Exemestane | 24 |
| Enzalutamidebrand: Xtandi | 24 |
| Ibrutinibbrand: Imbruvica | 23 |
| Letrozole | 22 |
| Epoetin Alfa-Epbxbrand: Retacrit | 19 |
| Zanubrutinibbrand: Brukinsa | 15 |
| Hydroxyurea | 15 |
| Lenalidomide | 14 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$802 across 29 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
- 2007-02-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Warren Paroly's NPI number?
- Warren Paroly's National Provider Identifier (NPI) is 1306981527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Paroly's specialty?
- Warren Paroly is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Paroly located?
- Warren Paroly's practice location on file with NPPES is 3925 Waring Rd Ste C, Oceanside, CA 92056-4459.
- What is Warren Paroly's phone number?
- The practice phone number listed in the NPPES registry for Warren Paroly is (760) 758-5770.
- Does Warren Paroly accept Medicare?
- Warren Paroly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Paroly's NPI active?
- Yes — Warren Paroly's NPI (1306981527) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.