Ashley Darnell-Sakata, O.D.
Optometrist · Brentwood, CA
Ashley Darnell-Sakata, O.D. is an optometrist with a practice address in Brentwood, California, and NPI 1376923037, issued on Jun 8, 2015. Check the license (California 15215, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ashley Darnell-Sakata
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 15215 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8440 Brentwood Blvd Ste F, Brentwood, CA 94513
- Phone
- (925) 634-0303
- Enumerated
- Jun 8, 2015
- Record last updated
- Jan 31, 2024
- Medicare enrollment
- Enrolled (PECOS I20150820012351); accepts Medicare assignment
- Medical or professional school
- Pennsylvania College Of Optometry, 2015
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 8440 Brentwood Blvd Ste F
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carol Buchanan, ODOptometrist1336153741
Verify Ashley Darnell-Sakata in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 15215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average optometrist in 2024
38 Medicare Part D claims for 17 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of 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: $469.15
15 payments; by number, the most common kind was food and beverage; the largest payer was Abb Con-Cise Optical Group LLC. The 34,453 providers of this specialty with any payment received $769.99 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
- Dr Ashley Darnell-Sakata OD Optometric CorporationBrentwood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashley Darnell-Sakata among 8,308 optometrist records in California
Ashley Darnell-Sakata, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 71% of them.
- NPI issued2015 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2015 · median 2008 among the 3,573 with a school on file
- Record last updated2024 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 optometrist records list a practice address in Brentwood
They are 11 of the 1,212 NPPES records with a practice address in Brentwood, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Brentwood → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Poonam Bains, O.D.Brentwood, CA 945131336539576
- Matthew Bronge, O.D.Brentwood, CA 945131689623738
- Carol Buchanan, ODBrentwood, CA 945131336153741
- Mary Leong, O.D.Brentwood, CA 945131003968249
- Barbara Mostardi, ODBrentwood, CA 945131689688095
- Winson Ong, O.D.Brentwood, CA 945131821132143
- Joyce Roberts-Evans, O.D.Brentwood, CA 945131831213990
- Ingrid Stevens-Farinas, O.D.Brentwood, CA 945131841317344
Common questions
What is Ashley Darnell-Sakata, O.D.'s NPI number?
Ashley Darnell-Sakata, O.D.'s National Provider Identifier (NPI) is 1376923037, issued on Jun 8, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ashley Darnell-Sakata, O.D. located?
The NPPES record lists a practice address at 8440 Brentwood Blvd Ste F, Brentwood, CA, 94513. Phone: (925) 634-0303. Providers update this record themselves, so call before visiting.
How can I verify Ashley Darnell-Sakata, O.D.'s license?
NPPES lists California license number 15215, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ashley Darnell-Sakata, O.D. prescribe under Medicare Part D?
In 2024, Ashley Darnell-Sakata, O.D. had 38 Medicare Part D claims for 17 beneficiaries; the average among optometrist prescribers was 277. 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.