Caleb Yoo
Caleb Yoo is a Physician Assistant in New York, NY, registered under NPI 1003705443. 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 Oct 18, 2026. Parking is available about 0.38 mi away. There is EV charging 0.48 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 474 ft away, served by East 72nd Street & York Avenue. A pharmacy sits 0.34 mi from the entrance (Health Wise Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.20 mi away.
Getting here and what is nearby
Transit York Avenue & East 72nd Street 367 ft ~2 min
Convenience Green Gourmet 390 ft ~2 min
Restaurant Finestra Restaurant 431 ft ~2 min
Restaurant Tanoshi Sushi NYC 448 ft ~2 min
Transit York Avenue & East 72nd Street 461 ft ~2 min
Transit East 72nd Street & York Avenue 474 ft ~2 min
Restaurant York Ave Pizza 560 ft ~3 min
434 East 72nd Street
Mo 10:00-20:00; Tu-Fr 10:00-21:00; Sa 11:00-21:00
Coffee Alex Cafe & Deli 733 ft ~3 min
Coffee Chez les Frenchies 831 ft ~4 min
501 East 75th Street
Mo-Fr 08:00-16:00; Sa 09:00-15:00
Convenience York Grill & Juice Bar 906 ft ~4 min
Convenience Prime Convenience 972 ft ~4 min
1413 York Avenue
Hotel Ronald McDonald House New York 937 ft ~4 min
405 East 73rd Street
Coffee Oslo Coffee Roasters 0.20 mi ~4 min
Mo-Fr 07:00-18:00; Sa-Su 08:00-18:00
Pharmacy Duane Reade 0.20 mi ~4 min
1352 1st Avenue, New York 10021
00:00-24:00 open "Store" || Mo-Fr 08:00-13:30, 14:00-22:00; Sa 09:00-13:30, 14:00-18:00; Su 10:00-13:30, 14:00-18:00 open "Pharmacy"
Grocery A Matter of Health 0.22 mi ~5 min
Grocery Morton Williams 0.23 mi ~5 min
1331 1st Avenue, New York 10021
PH,Mo-Su 00:00-23:59
Parking Surrey Garage 0.29 mi ~6 min
439 East 77th Street, 10075
Grocery Foodtown 0.31 mi ~7 min
686 Main Street, New York 10044
Mo-Fr 07:00-22:00,10:00-20:00; Sa 07:00-22:00,10:00-18:00; Su 07:00-22:00,10:00-14:00
Parking Motorgate Public Parking Garage 0.33 mi ~7 min
686 Main Street, 10044
Pharmacy CVS Pharmacy 0.34 mi ~7 min
1396 2nd Avenue, New York 10021
Mo-Fr 08:00-13:30, 14:00-22:00; Sa, Su 08:00-20:00 open "Pharmacy" || 24/7 open "Store"
Pharmacy Health Wise Pharmacy 0.34 mi ~7 min
1494 York Avenue
Parking 0.38 mi ~8 min
403 East 65th Street, New York 10065
EV charging ChargePoint 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | 1003705443 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 1, 2025 |
| Last updated | Jul 1, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
523 E 72ND ST FL 5 New York, NY 10021 (646) 797-8305 |
| Mailing address |
5520 LORNA ST Torrance, CA 90503 |
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 | 7 | 0 | 5 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 0 | 1 | 4 | 8 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.