Ashley Faith Darnell-Sakata, OD
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 38
- Hospital affiliations
- 2
- Industry payments
- $200
- Medical group
- 1
- Practice address
- 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Ashley Darnell-Sakata's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Ashley Faith Darnell-Sakata is an optometrist in Walnut Creek, California
Ashley Darnell-Sakata practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
Ashley Darnell-Sakata's NPI, 1376923037, was assigned on June 8, 2015. Ashley Darnell-Sakata graduated from Pennsylvania College of Optometry in 2015. Ashley Darnell-Sakata holds California license 15215.
- NPI
- 1376923037NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749595619
- NPI enumeration date
- June 8, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 939-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ashley Faith Darnell-Sakata practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
Ashley Darnell-Sakata's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.
- John Muir Medical Center, Walnut Creek1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 939-3000
Source: Dmand AI Affiliation Data
Ashley Faith Darnell-Sakata is affiliated with 3 sites of care and 1 medical group
Ashley Darnell-Sakata's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Ashley Darnell-Sakata to 1 hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Ashley Faith Darnell-Sakata's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ashley Darnell-Sakata practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center, Walnut Creek | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Ashley Faith Darnell-Sakata is one of 7,206 optometrists in California
Optometrist is Ashley Darnell-Sakata's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Ashley Darnell-Sakata is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Ashley Darnell-Sakata
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Ashley Faith Darnell-Sakata treated 39 Medicare patients in 2024, average age 75
CMS counts 39 Medicare patients who saw Ashley Darnell-Sakata in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have high blood pressure, and 74% have high cholesterol. Their average risk score is 0.80, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ashley Darnell-Sakata's median patient age at 63, with 60% women.
Ashley Darnell-Sakata's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Ashley Darnell-Sakata's Medicare patients by sex, 2024
- Women2872%
- Men1128%
Chronic conditions among Ashley Darnell-Sakata's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis56%
Share of Medicare patients with each condition. A patient can have several.
Ashley Darnell-Sakata's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ashley Faith Darnell-Sakata wrote 38 Medicare Part D claims in 2024
In 2024, Ashley Darnell-Sakata wrote 38 Medicare Part D claims for 17 patients. 47% of them were for generic drugs.
Ashley Darnell-Sakata's Part D claims by kind of drug, 2024
- Generic18 claims47%
- Brand-name20 claims53%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Ashley Faith Darnell-Sakata takes part in Medicare
Ashley Darnell-Sakata accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Ashley Faith Darnell-Sakata received $200 in industry payments in 2025
CMS Open Payments shows 7 general payments to Ashley Darnell-Sakata from 5 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $66.
Companies that paid Ashley Darnell-Sakata the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Ashley Faith Darnell-Sakata graduated from Pennsylvania College of Optometry
Ashley Darnell-Sakata graduated from Pennsylvania College of Optometry in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Ashley Faith Darnell-Sakata's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Ashley Faith Darnell-Sakata
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ashley Faith Darnell-Sakata's NPI number?
Ashley Faith Darnell-Sakata's NPI number is 1376923037. It was assigned on June 8, 2015, and it is active in the NPI Registry.
What does Ashley Faith Darnell-Sakata specialize in?
Ashley Faith Darnell-Sakata is an optometrist in Walnut Creek, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Ashley Faith Darnell-Sakata practice?
Ashley Darnell-Sakata practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Ashley Darnell-Sakata's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Ashley Darnell-Sakata to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Ashley Faith Darnell-Sakata's office phone number?
The practice phone on file for Ashley Darnell-Sakata is (925) 939-3000.
What is Ashley Faith Darnell-Sakata's medical license number?
Ashley Darnell-Sakata holds California license 15215.
Which hospitals is Ashley Faith Darnell-Sakata affiliated with?
Ashley Darnell-Sakata practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dmand AI links Ashley Darnell-Sakata to 1 more hospital.
Does Ashley Faith Darnell-Sakata accept Medicare?
Yes. CMS lists Ashley Darnell-Sakata as accepting Medicare assignment.
How many Medicare patients does Ashley Faith Darnell-Sakata see?
CMS counts 39 Medicare patients who saw Ashley Darnell-Sakata in 2024, with an average age of 75.
Where did Ashley Faith Darnell-Sakata go to medical school?
Ashley Darnell-Sakata graduated from Pennsylvania College of Optometry in 2015.
Has Ashley Faith Darnell-Sakata received payments from drug or device companies?
CMS Open Payments shows $200 in general payments to Ashley Darnell-Sakata from 5 companies from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Ashley Faith Darnell-Sakata been practicing?
Ashley Darnell-Sakata graduated from medical school in 2015, 11 years ago.
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