Derrick Pratte Olzack, P.A.
Family Medicine Physician · Atwater, CA
Derrick Pratte Olzack, P.A. is a family medicine physician with a practice address in Atwater, California, and NPI 1114456738, issued on Jun 7, 2017. Check the license (California 54432, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Derrick Pratte Olzack
- Credential
- P.A.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 54432 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1775 Third St, Atwater, CA 95301
- Phone
- (209) 358-5611
- Enumerated
- Jun 7, 2017
- Record last updated
- Jul 21, 2022
- Fax
- (209) 358-0219
- Medicare enrollment
- Enrolled (PECOS I20191228000162); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Derrick Pratte Olzack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 54432Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
535 Medicare Part D claims for 89 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium38 claims
- Metformin Hcl23 claims
- Amlodipine Besylate18 claims
- Simvastatin17 claims
- Lisinopril16 claims
- Omeprazole15 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 one group practice
- Community Health Centers OF AmericaMariposa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derrick Pratte Olzack among 17,133 family medicine physician records in California
Derrick Pratte Olzack, P.A. 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 updated2022 · 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).
11 family medicine physician records list a practice address in Atwater
They are 11 of the 679 NPPES records with a practice address in Atwater, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Atwater → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jose Buenrostro, M.D.Atwater, CA 953011861839151
- Bernadette Chiu, MDAtwater, CA 953011770233819
- Patrick De Dios, MDAtwater, CA 953011245927896
- Rodrigo Dezubiria, M.DAtwater, CA 953011215040563
- Eric Disbrow, M.D.Atwater, CA 953011730150897
- Donald Golden, M.DAtwater, CA 953011942224811
- William Nation, M.D.Atwater, CA 953011558438622
- Thavalinh Sphabmixay, M.D.Atwater, CA 953011841445277
Common questions
What is Derrick Pratte Olzack, P.A.'s NPI number?
Derrick Pratte Olzack, P.A.'s National Provider Identifier (NPI) is 1114456738, issued on Jun 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Derrick Pratte Olzack, P.A. located?
The NPPES record lists a practice address at 1775 Third St, Atwater, CA, 95301. Phone: (209) 358-5611. Providers update this record themselves, so call before visiting.
How can I verify Derrick Pratte Olzack, P.A.'s license?
NPPES lists California license number 54432, 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 Derrick Pratte Olzack, P.A. prescribe under Medicare Part D?
In 2024, Derrick Pratte Olzack, P.A. had 535 Medicare Part D claims for 89 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.