Darin Chambers, M.D.
Family Medicine Physician · Oxnard, CA
Darin Chambers, M.D. is a family medicine physician with a practice address in Oxnard, California, and NPI 1316108053, issued on Jun 24, 2008. Check the license (California A107109, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Darin Chambers
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A107109 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2400 S C St, Oxnard, CA 93033
- Phone
- (805) 240-7000
- Enumerated
- Jun 24, 2008
- Record last updated
- Jul 10, 2023
- Medicare enrollment
- Enrolled (PECOS I20110104000084); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2007
- Entity
- Type 1 · individual
Also registered at 2400 S C St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mitchell Brand, FNPFamily Nurse Practitioner1568980589
- Herlinda Delgadillo, LMFTMarriage & Family Therapist1720312879
- Holly Le-WongPrimary Care Nurse Practitioner1467233247
- Yohan Perera, MDFamily Medicine Physician1275021743
- Samuel Phang, MDFamily Medicine Physician1346516143
- Erica Wall, PA-CPhysician Assistant1467180315
Verify Darin Chambers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average family medicine physician in 2024
4,470 Medicare Part D claims for 233 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 142 claims were for opioids.
Most prescribed
- Metformin Hcl233 claims
- Atorvastatin Calcium158 claims
- Losartan Potassium151 claims
- Omeprazole143 claims
- Amlodipine Besylate109 claims
- Lisinopril103 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $96.30
5 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- County OF VenturaVentura, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
74 family medicine physician records list a practice address in Oxnard
They are 74 of the 3,211 NPPES records with a practice address in Oxnard, and 17,133 family medicine physician records in California.
All 74 in Oxnard → All 17,133 in California → Every provider in Oxnard →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Darin Chambers, M.D.'s NPI number?
Darin Chambers, M.D.'s National Provider Identifier (NPI) is 1316108053, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Darin Chambers, M.D. located?
The NPPES record lists a practice address at 2400 S C St, Oxnard, CA, 93033. Phone: (805) 240-7000. Providers update this record themselves, so call before visiting.
How can I verify Darin Chambers, M.D.'s license?
NPPES lists California license number A107109, 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 Darin Chambers, M.D. prescribe under Medicare Part D?
In 2024, Darin Chambers, M.D. had 4,470 Medicare Part D claims for 233 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Darin Chambers, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.