Tien-san Yang
Tien-san Yang is a Mental Health Counselor in New York, NY, registered under NPI 1003652504. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Oct 12, 2026. Parking is available about 0.38 mi away. There is EV charging 0.49 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 253 ft away, served by East 23rd Street & Park Avenue South. A pharmacy sits 0.25 mi from the entrance (ProHealth Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 300 ft away.
Getting here and what is nearby
Transit East 23rd Street & Lexington Avenue 77 ft ~1 min
Restaurant Chipotle 41 ft ~1 min
125 East 23rd Street, New York 10010
Mo-Su 11:00-22:00
Restaurant Kung Fu Tea/TKK Fried Chicken 126 ft ~1 min
Coffee CoCo Fresh Tea & Juice 169 ft ~1 min
38B Lexington Avenue
Restaurant Andiamo Pizza 140 ft ~1 min
Transit East 23rd Street & Park Avenue 187 ft ~1 min
Transit East 23rd Street & Park Avenue South 253 ft ~1 min
Coffee Smile To Go 241 ft ~1 min
Hotel SpringHill Suites 285 ft ~2 min
Coffee Paris Baguette 300 ft ~2 min
Pharmacy CVS Pharmacy 535 ft ~3 min
300 Park Avenue South, 10010
Mo-Fr 08:00-18:00; Sa,Su 10:00-17:00
Hotel Lex Hotel NYC 587 ft ~3 min
Convenience M&M Gourmet Deli & Grill 610 ft ~3 min
Mo-Sa 06:00-02:00, Su 06:00-24:00
Convenience Heavenly Market 623 ft ~3 min
Grocery Morton Williams 616 ft ~3 min
Hotel Carlton Arms Hotel 666 ft ~3 min
Convenience Third Ave Deli & Grill 771 ft ~3 min
EV charging ChargePoint 822 ft ~4 min
Parking 822 ft ~4 min
47 East 21st Street, New York 10010
Grocery Eden Gourmet Marketplace 873 ft ~4 min
Grocery D'Agostino 887 ft ~4 min
341 3rd Avenue, New York 10010
Mo-Su 07:00-22:00; Dec 31 07:00-21:00; Jan 01 08:00-22:00
Pharmacy Duane Reade 0.23 mi ~5 min
401 Park Avenue South, New York 10016
Mo-Su 07:00-23:00
Pharmacy ProHealth Pharmacy 0.25 mi ~6 min
385 2nd Avenue, 10010
Mo-Fr 09:00-21:00; Sa 09:00-18:00; Su 10:00-16:00
EV charging ChargePoint 0.37 mi ~8 min
Parking Red Ball Garage 0.37 mi ~8 min
142 East 31st Street, 10016
Parking 0.38 mi ~8 min
10 East 30th Street, New York 10016
EV charging ChargePoint 0.49 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 |
|---|---|---|
| P129228 | NY | Mental Health Counselor primary |
This provider holds licence P129228 issued in NY. 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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor Mental Health | P129228 | NY | primary |
| 101Y00000X | Counselor | — | — | |
| 106H00000X | Marriage & Family Therapist | — | — |
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 | 1003652504 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 3, 2024 |
| Last updated | Jul 3, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
125 E 23RD ST STE 500 New York, NY 10010 (516) 808-0862 |
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 | 6 | 5 | 2 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 5 | 4 | 5 | 0 |
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.