Mark Warner, D.D.S.
Mark Warner, D.D.S. is a provider specialising in Dentist in Fairfield, CA, registered under NPI 1003188202. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Fairfield, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 500 ft away. There is EV charging 0.21 mi from the office (Tesla Destination Charger) — useful if you are driving in from out of town. The nearest transit stop is 663 ft away, served by Raley's. If you arrive early, there is a coffee shop 0.27 mi away.
Getting here and what is nearby
Transit Oliver Rd and Holiday 178 ft ~1 min
Restaurant McDonald's 289 ft ~2 min
3080 Travis Boulevard, Fairfield 94533-3443
07:00-19:00
Parking 304 ft ~2 min
Parking 396 ft ~2 min
Restaurant Taco Bell 350 ft ~2 min
3070 Travis Boulevard, Fairfield 94534
Mo-Th 07:00-01:00; Fr-Sa 07:00-02:00; Su 07:00-01:00
Restaurant Subway 389 ft ~2 min
3089 Travis Boulevard, Fairfield 94534
Parking 500 ft ~2 min
Grocery Spice 4 Less 615 ft ~3 min
1349 Oliver Road, 94534
Transit Raley's 663 ft ~3 min
Grocery Raley's 663 ft ~3 min
EV charging Tesla Supercharger 817 ft ~4 min
Coffee Peet's Coffee 960 ft ~4 min
1380 Holiday Lane
EV charging Tesla Supercharger 1,029 ft ~4 min
Gas station Chevron 984 ft ~4 min
Convenience ExtraMile 0.20 mi ~4 min
2990 Travis Boulevard
Hotel Motel 6 0.20 mi ~4 min
1473 Holiday Lane, Fairfield 94534
Coffee Starbucks 0.21 mi ~5 min
2980 Holiday Lane, Fairfield 94534
EV charging Tesla Destination Charger 0.21 mi ~5 min
Hotel Courtyard 0.22 mi ~5 min
1350 Holiday Lane, Fairfield 94534
Hotel Courtyard Fairfield Napa Valley Area 0.22 mi ~5 min
Coffee Starbucks 0.27 mi ~6 min
Gas station Kwik Serve 0.32 mi ~7 min
1051 Oliver Road, Fairfield 94534
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 416913 | CA | Dentist primary |
This provider holds licence 416913 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Dentist covers
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist. NUCC Health Care Provider Taxonomy, code 122300000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003188202 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 2, 2012 |
| Last updated | Feb 2, 2012 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | D.D.S. |
| Practice address |
1291 OLIVER RD Fairfield, CA 94534 (707) 422-7633 Fax (707) 422-2630 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 8 | 8 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 7 | 2 | 0 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.