Courtney Dunn, LCSW
Courtney Dunn, LCSW is a provider specialising in Clinical Social Worker in New York, NY, registered under NPI 1003215377.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 0.51 mi away at Red Ball Garage. The nearest transit stop is 389 ft away, served by 1 Av & E 25 St. A pharmacy sits 792 ft from the entrance (Rite Way Drugs & Surgicals), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 972 ft away.
Getting here and what is nearby
Transit 1st Avenue & East 23rd Street 353 ft ~2 min
Transit 1st Avenue & East 23rd Street 365 ft ~2 min
Transit 1 Av & E 25 St 389 ft ~2 min
Grocery Gracefully 437 ft ~2 min
Mo-Fr 06:00-18:00; Sa,Su 08:00-16:00
Coffee Starbucks 470 ft ~2 min
400 East 23rd st, New York 10010
Mo-Fr 05:00-19:30; Sa,Su 05:30-19:00
Coffee Möge Tee 639 ft ~3 min
Pharmacy Halpern Pharmacy 620 ft ~3 min
331 East 23rd Street, 10010
Mo-Fr 09:00-18:00; Sa 09:00-15:00
Restaurant McDonald's 637 ft ~3 min
336 East 23rd Street, New York 10010
Mo-Sa 07:00-22:00; Su 08:00-20:00
Parking 683 ft ~3 min
Pharmacy CVS Pharmacy 668 ft ~3 min
338 East 23rd Street, 10010
00:00-24:00 open "Store" ||Mo-Fr 08:00-21:00; Sa, Su 09:00-18:00 open "Pharmacy"
Restaurant Jugos 677 ft ~3 min
Convenience Peter Cooper Village Deli 727 ft ~3 min
Convenience C&S Mart 751 ft ~3 min
Mo-Sa 08:00-21:00; Su 08:30-20:00
Pharmacy Rite Way Drugs & Surgicals 792 ft ~4 min
Restaurant Frank's Trattoria 772 ft ~3 min
Grocery Morton Williams 921 ft ~4 min
Coffee Tal Bagels 972 ft ~4 min
Gas station BP 961 ft ~4 min
Grocery Gristedes 969 ft ~4 min
25 Waterside Plaza
Convenience Empire Gourmet 0.20 mi ~5 min
Parking Skyport 0.20 mi ~5 min
Hotel The Marcel 0.33 mi ~7 min
Hotel Carlton Arms Hotel 0.37 mi ~8 min
Hotel Hotel 17 0.43 mi ~9 min
Parking Red Ball Garage 0.51 mi ~11 min
142 East 31st Street, 10016
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 |
|---|---|---|
| 084038 | NY | Clinical Social Worker primary |
This provider holds licence 084038 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 Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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 | 1003215377 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 22, 2014 |
| Last updated | Nov 2, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LCSW |
| Practice address |
423 E 23RD ST New York, NY 10010 (212) 686-7500 |
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 | 1 | 5 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 1 | 1 | 3 | 5 |
Sum = 43 · next multiple of 10 = 50 · 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.