James Warren, DDS
- Part D claims, 2024
- 14
- Industry payments
- $903
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 453 Broadway, Millbrae, CA 94030-1905
- Practice phone
- Call (650) 697-2073
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chris Johns
Dental practice · Millbrae, California
Find James Warren'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.
James Warren is a general practice dentistry in Millbrae, California
James Warren practices at Chris Johns in Millbrae, California.
James Warren's NPI, 1861877623, was assigned on July 22, 2015. James Warren holds California license 64795.
- NPI
- 1861877623NPI Registry (opens in a new tab)
- NPI enumeration date
- July 22, 2015
- NPI status
- Active
- Practice phone
- (650) 697-2073
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
James Warren practices at Chris Johns in Millbrae, California
James Warren's primary practice is Chris Johns, at 453 Broadway, Millbrae, CA 94030-1905. The practice phone is (650) 697-2073.
- Chris Johns453 Broadway, Millbrae, CA 94030-1905Phone(650) 697-2073
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
James Warren is affiliated with 1 site of care and 1 medical group
James Warren's primary practice is Chris Johns in Millbrae, California. Dmand AI also links James Warren to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at James Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where James Warren practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chris Johns | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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James Warren is one of 7,627 general practice dentistrys in California
General practice is James Warren's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. James Warren is licensed in California.
Specialties and state licenses
- General practice dentistry, CaliforniaPrimary
General practice dentistrys near James Warren
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
James Warren wrote 14 Medicare Part D claims in 2024
In 2024, James Warren wrote 14 Medicare Part D claims for 12 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in James Warren's Part D claims, 2024
- Antibiotics93%13 of 14 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
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.
James Warren received $903 in industry payments in 2025
CMS Open Payments shows 13 general payments to James Warren from 4 drug and device companies in 2025. Education make up the largest share, 72% of the total. Straumann USA LLC paid the most, $634.
General payments to James Warren by kind, 2025 to 2025
- Education$65072%
- Food and beverage$25328%
Companies that paid James Warren 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 James Warren'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 James Warren
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is James Warren's NPI number?
James Warren's NPI number is 1861877623. It was assigned on July 22, 2015, and it is active in the NPI Registry.
What does James Warren specialize in?
James Warren is a general practice dentistry in Millbrae, California. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does James Warren practice?
James Warren practices at 453 Broadway, Millbrae, CA 94030-1905. James Warren's primary practice is Chris Johns in Millbrae, California. Dmand AI also links James Warren to 1 medical group.
What is James Warren's office phone number?
The practice phone on file for James Warren is (650) 697-2073.
What is James Warren's medical license number?
James Warren holds California license 64795.
Has James Warren received payments from drug or device companies?
CMS Open Payments shows $903 in general payments to James Warren from 4 companies from 2025 to 2025. The largest total came from Straumann USA LLC.
How long has James Warren been practicing?
James Warren's NPI was assigned in 2015.
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