Chi Rajalingam, PH.D.
Chi Rajalingam, PH.D. is a Clinical Psychologist in Santa Ana, CA, registered under NPI 1003274390.
Getting there
Here is what surrounds this office in Santa Ana, based on OpenStreetMap data collected Sep 15, 2026. Parking is available about 0.24 mi away. There is EV charging 0.29 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 912 ft away, served by Ross-3rd. A pharmacy sits 0.31 mi from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.21 mi away.
Getting here and what is nearby
Transit Ross-Santa Ana 481 ft ~2 min
Coffee Starbucks 487 ft ~2 min
Transit Ross-4th 559 ft ~3 min
Parking 645 ft ~3 min
420 N. Main St., Santa Ana 92701
Transit Ross-3rd 912 ft ~4 min
Pharmacy Main Street Pharmacy 1,013 ft ~4 min
510 North Main Street, Santa Ana 92701
Mo-Fr 09:00-17:30
Coffee The Den 0.21 mi ~5 min
125D West 2nd Street, Santa Ana
Parking 0.21 mi ~5 min
690 Civic Center Drive West, Santa Ana
Restaurant McFadden Public Market 0.22 mi ~5 min
Restaurant Tacompadre Tacos Chingones 0.22 mi ~5 min
Mo off; Tu-Th 10:00-21:00; Fr 10:00-25:00; Sa 13:00-25:00; Su 13:00-20:00
Restaurant Munchies Vegan Diner 0.22 mi ~5 min
Convenience 7-Eleven 0.23 mi ~5 min
Parking 0.24 mi ~5 min
445 Civic Center Drive West, Santa Ana 92701
Pharmacy CVS Pharmacy 0.28 mi ~6 min
EV charging Tesla Supercharger 0.29 mi ~6 min
Pharmacy Rite Aid 0.31 mi ~7 min
Grocery Commercial Nutrition Mexicana 0.31 mi ~7 min
Convenience 7-Eleven 0.42 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 |
|---|---|---|
| PSY20161 | CA | Clinical Psychologist primary |
This provider holds licence PSY20161 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 Clinical covers
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
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 | 1003274390 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 2, 2016 |
| Last updated | Feb 2, 2016 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PH.D. |
| Practice address |
405 W 5TH ST STE 410 Santa Ana, CA 92701 (714) 834-5937 |
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 | 7 | 4 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 7 | 8 | 3 | 9 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.