Sonja Ryst, M.A., CF-SLP
Sonja Ryst, M.A., CF-SLP is a provider specialising in Speech-Language Pathologist in Brooklyn, NY, registered under NPI 1003304924. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Brooklyn, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 507 ft away. The nearest transit stop is 712 ft away, served by 18th Avenue & Ocean Parkway. A pharmacy sits 0.36 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Parking 344 ft ~2 min
Parking 405 ft ~2 min
Transit 18th Avenue & East 3rd Street 478 ft ~2 min
Parking 507 ft ~2 min
Restaurant Holy Schnitzel 518 ft ~2 min
Transit 18th Avenue & East 5th Street 567 ft ~3 min
Grocery Fortune Supermarket 556 ft ~3 min
Transit 18th Avenue & Ocean Parkway 712 ft ~3 min
Convenience 18th Ave Deli Grocery 722 ft ~3 min
Restaurant China Dragon 881 ft ~4 min
Convenience International News 0.20 mi ~5 min
954 McDonald Avenue, 11230
Pharmacy Spectrum Pharmacy 0.21 mi ~5 min
952 McDonald Avenue
Restaurant U & I Restaurant 0.21 mi ~5 min
Pharmacy First Care Pharmacy 0.27 mi ~6 min
Grocery Rosners 0.28 mi ~6 min
856 McDonald Avenue
Coffee The Little Things 0.32 mi ~7 min
Coffee Gong Cha 0.34 mi ~7 min
1015 Foster Avenue, Brooklyn 11230
Mo-Su 11:00-23:00
Grocery Interfood 0.34 mi ~7 min
506 Ditmas Avenue
Coffee Chocolate Connects 0.36 mi ~8 min
Pharmacy CVS Pharmacy 0.36 mi ~8 min
Convenience Zamzam 0.38 mi ~8 min
Hotel Best Western Plus 0.39 mi ~8 min
Gas station Speedway 0.40 mi ~8 min
Gas station Sunoco 0.46 mi ~10 min
Gas station BP 0.48 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Speech-Language Pathologist covers
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing. NUCC Health Care Provider Taxonomy, code 235Z00000X
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 | |
|---|---|---|---|---|
| 2355S0801X | Speech-Language Assistant Speech-Language Assistant | — | — | |
| 235Z00000X | Speech-Language Pathologist | — | — | |
| 235Z00000X | Speech-Language Pathologist | — | NY | 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 | 1003304924 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 26, 2018 |
| Last updated | Apr 26, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.A., CF-SLP |
| Practice address |
175 LAWRENCE AVE Brooklyn, NY 11230 (718) 436-7600 |
| Mailing address |
4124 29TH ST APT 4B Long Island City, NY 11101 |
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 | 3 | 0 | 4 | 9 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 0 | 8 | 9 | 4 |
Sum = 56 · next multiple of 10 = 60 · 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.