Donna Dorriz, D.O.
Family Medicine Physician · Santa Clarita, CA
Donna Dorriz, D.O. is a family medicine physician with a practice address in Santa Clarita, California, and NPI 1033642608, issued on Apr 10, 2017. Check the license (California 20A18442, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Donna Dorriz
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A18442 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24035 Newhall Ranch RD, Santa Clarita, CA 91355
- Phone
- (661) 291-3444
- Enumerated
- Apr 10, 2017
- Record last updated
- May 15, 2023
- Medicare enrollment
- Enrolled (PECOS I20210504002430); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 24035 Newhall Ranch RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anthony Avnaim, D.O.Family Medicine Physician1770878811
- Lorena Del Valle, P.A.Physician Assistant1972840338
- Lisa Garner, FNP-CFamily Nurse Practitioner1184167736
- Namele MezaMarriage & Family Therapist1861090417
- Jennifer Yasharal, PA-CPhysician Assistant1952739617
Verify Donna Dorriz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18442Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average family medicine physician in 2024
452 Medicare Part D claims for 192 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin23 claims
- Rosuvastatin Calcium23 claims
- Losartan Potassium20 claims
- Prednisone19 claims
- Albuterol Sulfate Hfa15 claims
- Atorvastatin Calcium14 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.
Bills Medicare through 2 group practices
- Hmts IncAliso Viejo, CA
- Hoag ClinicAliso Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donna Dorriz among 17,133 family medicine physician records in California
Donna Dorriz, D.O. 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · 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).
31 family medicine physician records list a practice address in Santa Clarita
They are 31 of the 1,835 NPPES records with a practice address in Santa Clarita, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Clarita → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brian Downs, D.O.Valencia, CA 913551881795631
- Giovinetza Hasbun, M.D.Valencia, CA 913551255353496
- Michael Johnson, M.D.Valencia, CA 913551275590267
- Richard Kim, M.D.Valencia, CA 913551366427510
- Dennis Lewis, MDValencia, CA 913551780608190
- Geoffrey Lloyd, D.O.Valencia, CA 913551821104845
- Heather Mullen, MD, MSJSanta Clarita, CA 913551720185382
- Jeffrey Nordella, M.D.Valencia, CA 913551487755419
Common questions
What is Donna Dorriz, D.O.'s NPI number?
Donna Dorriz, D.O.'s National Provider Identifier (NPI) is 1033642608, issued on Apr 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Donna Dorriz, D.O. located?
The NPPES record lists a practice address at 24035 Newhall Ranch RD, Santa Clarita, CA, 91355. Phone: (661) 291-3444. Providers update this record themselves, so call before visiting.
How can I verify Donna Dorriz, D.O.'s license?
NPPES lists California license number 20A18442, 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 Donna Dorriz, D.O. prescribe under Medicare Part D?
In 2024, Donna Dorriz, D.O. had 452 Medicare Part D claims for 192 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.