Karen Loaiza, PH.D.
Karen Loaiza, PH.D. is a Clinical Psychologist in Webster Groves, MO, registered under NPI 1003044215.
Getting there
Here is what surrounds this office in Webster Groves, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 0.38 mi away. A pharmacy sits 0.46 mi from the entrance (CVS), which helps if you leave with a prescription.
Getting here and what is nearby
Parking 220 ft ~1 min
Gas station BP 0.20 mi ~4 min
3157 South Brentwood Boulevard
Mo-Fr 06:00-22:00; Sa 07:00-22:00; Su 08:00-21:30
Parking Brentwood Park Public Parking 0.28 mi ~6 min
Parking 0.38 mi ~8 min
Hotel Tuxedo Park STL Bed & Breakfast Inn 0.39 mi ~8 min
Pharmacy CVS 0.46 mi ~10 min
8800 Manchester Road
Mo-Fr 09:00-13:30, 14:00-19:00; Sa 10:00-13:30, 14:00-18:00; Su 11:00-13:30, 14:00-17:00
Grocery Schnucks 0.46 mi ~10 min
Restaurant Arby's 0.49 mi ~10 min
8720 Manchester Road, Brentwood 63144
10:00-23:00
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 |
|---|---|---|
| 2009027882 | MO | Clinical Psychologist primary |
This provider holds licence 2009027882 issued in MO. 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 | 1003044215 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 25, 2009 |
| Last updated | Aug 24, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PH.D. |
| Practice address |
357 MARSHALL AVE STE 2 Webster Groves, MO 63119 (314) 337-4220 |
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 | 0 | 4 | 4 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 8 | 2 | 2 |
Sum = 45 · next multiple of 10 = 50 · check digit = 5 · actual last digit = 5
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.