Cathryn Marie O'Neill, M.D.
Family Medicine Physician · Redlands, CA
Cathryn Marie O'Neill, M.D. is a family medicine physician with a practice address in Redlands, California, and NPI 1093071763, issued on Apr 7, 2012. Check the license (California A150885, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cathryn Marie O'Neill
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A150885 CA
Self-reported in NPPES; status is on the state search - Practice location
- 350 Terracina Blvd, Redlands, CA 92373
- Phone
- (909) 335-5500
- Enumerated
- Apr 7, 2012
- Record last updated
- Sep 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20171219000000); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 350 Terracina Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cathryn Marie O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A150885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
427 Medicare Part D claims for 303 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Ipratropium Bromide97 claims
- Cefadroxil22 claims
- Meloxicam22 claims
- Prednisone19 claims
- Amoxicillin-Clavulanate Potass17 claims
- Doxycycline Monohydrate11 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.
Cathryn Marie O'Neill among 17,133 family medicine physician records in California
Cathryn Marie O'Neill, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2011 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 family medicine physician records list a practice address in Redlands
They are 62 of the 2,498 NPPES records with a practice address in Redlands, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Redlands → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kenneth Ballou, M.D.Redlands, CA 923731831145374
- Craig Banta, M.D.Redlands, CA 923731235174087
- Maria Garcia De Benitez, M.D.Redlands, CA 923731336198415
- Jean-Claude Hage, M.D.Redlands, CA 923731982646832
- Calvin Hagglov, M.D.Redlands, CA 923731023048816
- Jonathan Horstmann, MDRedlands, CA 923731699715953
- Marvin Lee, M.D. MPHRedlands, CA 923731407820855
- Harold Luke, M.D.Redlands, CA 923731700828779
Common questions
What is Cathryn Marie O'Neill, M.D.'s NPI number?
Cathryn Marie O'Neill, M.D.'s National Provider Identifier (NPI) is 1093071763, issued on Apr 7, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Cathryn Marie O'Neill, M.D. located?
The NPPES record lists a practice address at 350 Terracina Blvd, Redlands, CA, 92373. Phone: (909) 335-5500. Providers update this record themselves, so call before visiting.
How can I verify Cathryn Marie O'Neill, M.D.'s license?
NPPES lists California license number A150885, 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 Cathryn Marie O'Neill, M.D. prescribe under Medicare Part D?
In 2024, Cathryn Marie O'Neill, M.D. had 427 Medicare Part D claims for 303 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.