DR DEL PSYCHOTHERAPY IN PRINCETON
DR DEL PSYCHOTHERAPY IN PRINCETON is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003692377, based in Princeton, NJ. It is classified under Adult Mental Health Clinic/Center.
Getting there
Here is what surrounds this office in Princeton, based on OpenStreetMap data collected Oct 15, 2026. Parking is available about 930 ft away at Hulfish Garage. The nearest transit stop is 763 ft away, served by Nassau Street at Palmer Square. If you arrive early, there is a coffee shop 561 ft away.
Getting here and what is nearby
Transit Nassau St at South Tulane St 126 ft ~1 min
Restaurant Alfalfa 98 ft ~1 min
Restaurant J S Foodies 267 ft ~2 min
14 South Tulane Street, Princeton 08542
Restaurant Tacoria 295 ft ~2 min
110 Nassau Street, Princeton 08542
Mo-Th, Su 11:30-21:00; Fr, Sa 11:30-22:00
Coffee illy Coffee At Earth's End Princeton 366 ft ~2 min
Coffee Starbucks 393 ft ~2 min
100 Nassau Street, Princeton 08542
Mo-Su 06:00-20:00
Parking 373 ft ~2 min
Convenience D'Angelo Italian Market 420 ft ~2 min
35 Spring Street, 08542
Coffee Junbi 561 ft ~3 min
27 Witherspoon Street, Princeton 08542
Mo-Su 07:00-22:00
Parking Spring Street Garage 609 ft ~3 min
Transit Nassau St at Palmer Sq 752 ft ~3 min
Transit Nassau Street at Palmer Square 763 ft ~3 min
Hotel Nassau Inn 809 ft ~4 min
10 Palmer Square East, Princeton 08542
Hotel Nassau Inn 958 ft ~4 min
10 Palmer Square East, Princeton 08542
Parking Hulfish Garage 930 ft ~4 min
7 Hulfish Street, Princeton 08542
Hotel Graduate by Hilton Princeton 0.26 mi ~6 min
Convenience 7-Eleven 0.43 mi ~9 min
Gas station Gulf 0.45 mi ~10 min
Gas station Sunoco 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
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 Adult Mental Health covers
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disorders in adults. NUCC Health Care Provider Taxonomy, code 261QM0850X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003692377 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Sep 4, 2023 |
| Last updated | Sep 4, 2023 |
| Status | Active |
| Practice address |
138 NASSAU ST Princeton, NJ 08542 (917) 576-1544 |
| Mailing address |
8 PENZIAS PL Highland Park, NJ 08904 |
| Other names |
Delverlon Hall Professional Name |
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 | 9 | 2 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 9 | 4 | 3 | 5 |
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.