Mark Winkle Darnell, DDS
- Part D claims, 2024
- 47
- Industry payments
- $48
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 890 Sunset Dr Suite D-1a Suite D-1a, Hollister, CA 95023
- Practice phone
- Call (831) 637-4623
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hollister Family & Cosmetic Dentistry
Physician office · Hollister, California
Find Mark Darnell'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.
Mark Winkle Darnell is a general practice dentistry in Hollister, California
Mark Darnell practices at Hollister Family & Cosmetic Dentistry in Hollister, California.
Mark Darnell's NPI, 1528263589, was assigned on June 19, 2007. Mark Darnell holds California license 48899.
- NPI
- 1528263589NPI Registry (opens in a new tab)
- NPI enumeration date
- June 19, 2007
- NPI status
- Active
- Practice phone
- (831) 637-4623
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Mark Winkle Darnell practices at Hollister Family & Cosmetic Dentistry in Hollister, California
Mark Darnell's primary practice is Hollister Family & Cosmetic Dentistry, at 890 Sunset Dr Suite D-1a Suite D-1a, Hollister, CA 95023. The practice phone is (831) 637-4623.
- Hollister Family & Cosmetic Dentistry890 Sunset Dr Suite D-1a Suite D-1a, Hollister, CA 95023Phone(831) 637-4623
Source: Dmand AI Affiliation Data
Mark Winkle Darnell is affiliated with 1 site of care
Mark Darnell's primary practice is Hollister Family & Cosmetic Dentistry in Hollister, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark Winkle Darnell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Darnell practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hollister Family & Cosmetic Dentistry | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Winkle Darnell is one of 7,627 general practice dentistrys in California
General practice is Mark Darnell's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. Mark Darnell is licensed in California.
Specialties and state licenses
- General practice dentistry, CaliforniaPrimary
General practice dentistrys near Mark Darnell
Counts of general practice dentistrys 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
Mark Winkle Darnell wrote 47 Medicare Part D claims in 2024
In 2024, Mark Darnell wrote 47 Medicare Part D claims for 30 patients. 94% of them were for generic drugs.
Mark Darnell's Part D claims by kind of drug, 2024
- Generic44 claims94%
- Brand-name and other3 claims6%
Drug classes CMS tracks in Mark Darnell's Part D claims, 2024
- Antibiotics68%32 of 47 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Mark Winkle Darnell received $48 in industry payments in 2025
CMS Open Payments shows 4 general payments to Mark Darnell from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Align Technology, Inc. paid the most, $48.
Companies that paid Mark Darnell the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark Winkle Darnell'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Mark Winkle Darnell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Winkle Darnell's NPI number?
Mark Winkle Darnell's NPI number is 1528263589. It was assigned on June 19, 2007, and it is active in the NPI Registry.
What does Mark Winkle Darnell specialize in?
Mark Winkle Darnell is a general practice dentistry in Hollister, California. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does Mark Winkle Darnell practice?
Mark Darnell practices at 890 Sunset Dr Suite D-1a Suite D-1a, Hollister, CA 95023. Mark Darnell's primary practice is Hollister Family & Cosmetic Dentistry in Hollister, California.
What is Mark Winkle Darnell's office phone number?
The practice phone on file for Mark Darnell is (831) 637-4623.
What is Mark Winkle Darnell's medical license number?
Mark Darnell holds California license 48899.
Has Mark Winkle Darnell received payments from drug or device companies?
CMS Open Payments shows $48 in general payments to Mark Darnell from 1 company from 2025 to 2025. The largest total came from Align Technology, Inc.
How long has Mark Winkle Darnell been practicing?
Mark Darnell's NPI was assigned in 2007.
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