Warren Steven Paroly, MD
Hematology & Oncology Physician · Oceanside, CA
Warren Steven Paroly, MD is a hematology & oncology physician with a practice address in Oceanside, California, and NPI 1306981527, issued on Feb 21, 2007. Check the license (California G29867, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Warren Steven Paroly
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G29867 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3925 Waring RD Ste C, Oceanside, CA 92056
- Phone
- (760) 758-5770
- Enumerated
- Feb 21, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (760) 758-0566
- Medicaid ID
- 00G298670 CA
- Medicare enrollment
- Enrolled (PECOS I20120224000244); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1972
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify Warren Steven Paroly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G29867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
374 Medicare Part D claims for 75 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims. 12 claims were for opioids.
Most prescribed
- Prednisone30 claims
- Acyclovir28 claims
- Exemestane24 claims
- Xtandi24 claims
- Imbruvica23 claims
- Letrozole22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $802.26
29 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- North County Oncology Medical Clinic IncOceanside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Warren Steven Paroly among 1,583 hematology & oncology physician records in California
Warren Steven Paroly, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1972 · median 2003 among the 1,124 with a school on file
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Oceanside → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- David Oblon, MDOceanside, CA 920561215072434
- Catherine Quinn, M.D.Oceanside, CA 920561427403641
- Nayyar Siddique, MDOceanside, CA 920561497890610
- Himani Singh, MDOceanside, CA 920561558546192
- Christine White, M.D.Rancho Santa Fe, CA 920671265535728
- Philip Marjon, M.D.San Marcos, CA 920691912234121
- Oyewale Abidoye, M.D.La Jolla, CA 920371790841815
- Sonia Ali, M.D.La Jolla, CA 920371730451089
Common questions
What is Warren Steven Paroly, MD's NPI number?
Warren Steven Paroly, MD's National Provider Identifier (NPI) is 1306981527, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Warren Steven Paroly, MD located?
The NPPES record lists a practice address at 3925 Waring RD Ste C, Oceanside, CA, 92056. Phone: (760) 758-5770. Providers update this record themselves, so call before visiting.
How can I verify Warren Steven Paroly, MD's license?
NPPES lists California license number G29867, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Warren Steven Paroly, MD prescribe under Medicare Part D?
In 2024, Warren Steven Paroly, MD had 374 Medicare Part D claims for 75 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.