Mark Penn
Mark Penn is a provider specialising in Behavior Analyst in New York, NY, registered under NPI 1003468430. 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 New York, based on OpenStreetMap data collected Sep 29, 2026. Parking is available about 0.41 mi away. The nearest transit stop is 320 ft away, served by Saint Nicholas Avenue & West 141st Street. A pharmacy sits 0.42 mi from the entrance (Capsule), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.22 mi away.
Getting here and what is nearby
Transit Saint Nicholas Avenue & West 142nd Street 202 ft ~1 min
Transit Saint Nicholas Avenue & West 141st Street 258 ft ~1 min
Transit Saint Nicholas Avenue & West 141st Street 320 ft ~2 min
Parking Hamilton Grange 494 ft ~2 min
Restaurant The Edge 691 ft ~3 min
101 Edgecombe Avenue, 10030
Restaurant Jacob Restaurant 707 ft ~3 min
2695 Frederick Douglas Boulevard
Mo-Su 10:00-22:00
Parking Centerpark Harlem Parking Garage 716 ft ~3 min
Convenience Sequoia Food & Deli 808 ft ~4 min
2709 Frederick Douglass Boulevard, 10030
Restaurant Charles Pan-Fried Chicken 788 ft ~3 min
340 West 145th Street, 10030
Mo-Th 11:00-22:00; Fr-Sa 11:00-23:00; Su 11:00-23:00
Pharmacy Duane Reade 844 ft ~4 min
320 West 145th Street, 10030
07:00-22:00 open "Store" || Mo-Fr 09:00-20:00; Sa 09:00-18:00; Su 10:00-17:00 open "Pharmacy"
Coffee Sugar Hill Café 909 ft ~4 min
410 West 145th Street, New York 10031
Mo-Fr 07:30-15:30;Sa-Su 09:00-15:00
Coffee Starbucks 989 ft ~4 min
301 West 145th Street, New York 10039
Mo-Fr 05:30-21:00; Sa, Su 06:00-21:00
Grocery Super Foodtown 996 ft ~4 min
Convenience Skyline Food Center 0.20 mi ~5 min
2726 Frederick Douglass Boulevard, 10030
Convenience Heights Food Deli 0.20 mi ~5 min
Coffee Café One 0.22 mi ~5 min
1619 Amsterdam Avenue, New York 10031
Mo-Fr 07:30-20:00; Sa 08:00-19:00; Su 08:00-18:00
Gas station Shell 0.26 mi ~6 min
Grocery Associated 0.28 mi ~6 min
2444 Adam Clayton Powell Jr. Boulevard, 10030
Pharmacy Sugar Hill Pharmacy 0.30 mi ~6 min
752 Saint Nicholas Avenue, 10031
Mo-Fr 08:30-18:30; Sa 10:00-19:00
Grocery Foodtown 0.32 mi ~7 min
756 Saint Nicholas Avenue, New York 10031
Mo-Fr 07:00-22:00; Sa-Su 07:00-21:00
Hotel Lotus Accomodation 0.34 mi ~7 min
Gas station Mobil 0.39 mi ~8 min
Parking 0.41 mi ~9 min
Pharmacy Capsule 0.42 mi ~9 min
122 West 146th Street, 10039
Mo-Fr 08:00-22:00; Sa, Su 10:00-18:00
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 Behavior Analyst covers
A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans. NUCC Health Care Provider Taxonomy, code 103K00000X
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 | 1003468430 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 16, 2019 |
| Last updated | Jul 16, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
634 SAINT NICHOLAS AVE APT 1G New York, NY 10030 (757) 918-0068 |
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 | 4 | 6 | 8 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 6 | 7 | 4 | 6 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.