Kristina Williams
Kristina Williams is a Family Nurse Practitioner in La Mesa, CA, registered under NPI 1003768946. 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 La Mesa, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 759 ft away. There is EV charging 0.43 mi from the office (La Mesa Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.30 mi away.
Getting here and what is nearby
Parking 291 ft ~2 min
Parking 417 ft ~2 min
Parking 759 ft ~3 min
Grocery Albertsons 982 ft ~4 min
Restaurant Señor Burro 0.26 mi ~6 min
Transit Grossmont Transit Center 0.27 mi ~6 min
Transit Grossmont Denter Dr & Healthcare Dr 0.29 mi ~6 min
Transit 0.30 mi ~6 min
Grocery Trader Joe's 0.34 mi ~7 min
5495 Grossmont Center Drive, La Mesa 91942
Mo-Su 08:00-21:00
Restaurant Rubio's 0.39 mi ~8 min
5500 suite D-22 Grossmont Center Drive, La Mesa 91942
Mo-We 10:30-21:30; Th-Sa 10:30-22:00; Su 10:30-21:00
Restaurant Claim Jumper 0.41 mi ~9 min
EV charging La Mesa Supercharger 0.43 mi ~9 min
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 |
|---|---|---|
| 95037861 | CA | Family Nurse Practitioner primary |
This provider holds licence 95037861 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 Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003768946 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 12, 2026 |
| Last updated | Feb 12, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
8881 FLETCHER PKWY STE 250 La Mesa, CA 91942 (714) 609-0201 |
| Mailing address |
1720 W KNAPP DR Vista, CA 92083 |
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 | 7 | 6 | 8 | 9 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 6 | 7 | 9 | 8 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.