Rodger Questin, PHD
Rodger Questin, PHD is a Psychologist in San Diego, CA, registered under NPI 1003246364. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 San Diego, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 783 ft away. The nearest transit stop is 605 ft away. A pharmacy sits 0.28 mi from the entrance (Community Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.23 mi away.
Getting here and what is nearby
Transit 117 ft ~1 min
Restaurant La Bonne Table 418 ft ~2 min
3696 5th Avenue, San Diego 92103
Transit 495 ft ~2 min
Hotel Abpopa Hillcrest 457 ft ~2 min
3776 4th Avenue, 92103
Convenience 7-Eleven 546 ft ~3 min
Restaurant Huapangos Mexican Cuisine 527 ft ~2 min
3693 5th Avenue, San Diego 92103
Restaurant Cocina de Barrio 527 ft ~2 min
3707 5th Avenue, San Diego 92104
Tu-Sa 10:00-21:30; Su 10:00-16:00
Transit 605 ft ~3 min
Parking 662 ft ~3 min
Parking 684 ft ~3 min
Parking 783 ft ~3 min
Pharmacy Walgreens 0.20 mi ~4 min
Coffee Peet's Coffee 0.22 mi ~5 min
350 University Avenue, 92103
Mo-Fr 05:30-17:30; Sa-Su 06:00-17:00
Coffee Little Nap Cafe 0.23 mi ~5 min
Coffee Creme De La Crepe 0.23 mi ~5 min
142 University Avenue, San Diego 92103
Mo-Tu 08:00-22:00, Th-Su 08:00-22:00
Pharmacy Hillcrest Pharmacy 0.23 mi ~5 min
Pharmacy Community Pharmacy 0.28 mi ~6 min
640 University Avenue, San Diego 92103
Mo-Fr 08:00-18:00; Sa 10:00-14:00
Grocery Whole Foods Market 0.30 mi ~6 min
711 University Avenue, San Diego 92103
Mo-Su 07:00-22:00
Gas station Shell 0.33 mi ~7 min
Convenience Shell Food Mart 0.35 mi ~7 min
Hotel Vantaggio Suites Extended Stays 0.36 mi ~8 min
Convenience 7-Eleven 0.44 mi ~9 min
Grocery Pavilions 0.46 mi ~10 min
Hotel Inn at the Park 0.48 mi ~10 min
525 Spruce Street, San Diego 92103
Grocery lazy acres market 0.50 mi ~10 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 |
|---|---|---|
| 31181 | CA | Clinical Psychologist |
| 31181 | CA | Psychologist primary |
This provider holds licence 31181 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 Psychologist covers
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public. NUCC Health Care Provider Taxonomy, code 103T00000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist Clinical | 31181 | CA | |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — | |
| 103T00000X | Psychologist | 31181 | CA | primary |
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 | 1003246364 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 22, 2013 |
| Last updated | Nov 24, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | PHD |
| Practice address |
3702 4TH AVE San Diego, CA 92103 (760) 607-7257 |
| Other identifiers |
01261511
· Medicaid (CA) |
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 | 2 | 4 | 6 | 3 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 4 | 3 | 3 | 3 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.