Mark Souris, PSYD
Mark Souris, PSYD is a Clinical Psychologist in Woodland Hills, CA, registered under NPI 1003098427. 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 Woodland Hills, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 428 ft away. There is EV charging 0.45 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 766 ft away, served by Ventura / Canoga. A pharmacy sits 481 ft from the entrance (Delight Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Parking 278 ft ~2 min
Parking 348 ft ~2 min
Parking 428 ft ~2 min
Restaurant Prose Kitchen & Bar 423 ft ~2 min
Hotel Courtyard 472 ft ~2 min
Pharmacy Delight Pharmacy 481 ft ~2 min
Restaurant H.O.M Italian Eatery 467 ft ~2 min
21136 Ventura Boulevard, Woodland Hills 91364
Transit Ventura/Alhama 606 ft ~3 min
Transit Ventura/Alhama 629 ft ~3 min
Grocery Whole Foods Market 714 ft ~3 min
21347 Ventura Boulevard, Woodland Hills 91364
Mo-Su 07:00-22:00
Grocery Trader Joe's 755 ft ~3 min
21055 Ventura Boulevard, Woodland Hills 91364
Mo-Su 08:00-21:00
Transit Ventura / Canoga 766 ft ~3 min
Restaurant Burger King 781 ft ~3 min
5450 Canoga Avenue, Woodland Hills 91367-6619
Mo-Sa 06:30-20:00; Su 07:00-20:00
Convenience Rocket 821 ft ~4 min
Gas station Chevron 836 ft ~4 min
Coffee Blue Bottle Coffee 0.29 mi ~6 min
Coffee Starbucks 0.35 mi ~8 min
Convenience Rocket 0.35 mi ~7 min
Gas station Chevron 0.35 mi ~8 min
Coffee Re: Coffee 0.39 mi ~8 min
EV charging 0.45 mi ~9 min
Grocery Sprouts Farmers Market 0.49 mi ~10 min
19800 Ventura Boulevard, Woodland Hills 91364
Mo-Su 07:00-22:00
Hotel Best Western Woodland Hills Inn 0.50 mi ~10 min
21830 Ventura Boulevard, Woodland Hills 91364-1837
Hotel Best Western 0.50 mi ~10 min
21830 Ventura Boulevard, Woodland Hills 91364-1837
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 |
|---|---|---|
| PSY14283 | CA | Clinical Psychologist primary |
This provider holds licence PSY14283 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Psychologist
- PAC ID
- 6305890229
- Enrollment ID
- I20180702001491
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
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 | 1003098427 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 27, 2007 |
| Last updated | Nov 17, 2016 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | PSYD |
| Practice address |
21243 VENTURA BLVD SUITE 207 Woodland Hills, CA 91364 (818) 635-9705 Fax (747) 300-9246 |
| Mailing address |
19701 TUBA ST Chatsworth, CA 91311 |
| Other identifiers |
14283
· Other (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 | 0 | 9 | 8 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 7 | 4 | 4 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.