Brendan Tannenbaum, DO
Brendan Tannenbaum, DO is a provider specialising in Student in an Organized Health Care Education/Training Program in Phoenixville, PA, registered under NPI 1003609819. 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 Phoenixville, based on OpenStreetMap data collected Oct 10, 2026. Parking is available about 265 ft away. The nearest transit stop is 0.29 mi away. A pharmacy sits 563 ft from the entrance (Gateway Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Parking Visitor Lot A 227 ft ~1 min
Parking Visitor Lot B 255 ft ~1 min
Parking 265 ft ~2 min
Pharmacy Gateway Pharmacy 563 ft ~3 min
165 Nutt Road, Phoenixville 19460
Mo-Fr 08:00-21:00; Sa 09:00-19:00; Su 09:00-17:00
Restaurant Soko Bag Korean Fried Chicken 684 ft ~3 min
95 Nutt Road, Phoenixville 19460
Mo-Tu off; We-Th 11:30-21:00; Fr-Sa 11:30-22:00; Su 11:30-20:00
Convenience 7-Eleven 761 ft ~3 min
Gas station Sunoco 760 ft ~3 min
Restaurant Dunkin' 745 ft ~3 min
218 Nutt Road, Phoenixville 19460
Mo 05:00-18:00; Tu-Sa 04:00-20:00; Su 05:00-19:00
Transit 0.29 mi ~6 min
Transit 0.29 mi ~6 min
Restaurant Hog Island Steaks 0.41 mi ~9 min
785 Starr Street, Phoenixville 19460
Mo-Th 10:00-22:00; Fr-Sa 10:00-23:00; Su 11:00-22:00
Grocery Acme 0.43 mi ~9 min
785 Starr Street, Phoenixville 19460
07:00-23:00
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 Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
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 | 1003609819 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 24, 2025 |
| Last updated | May 24, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | DO |
| Practice address |
140 NUTT RD Phoenixville, PA 19460 (610) 983-1000 |
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 | 0 | 9 | 8 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 0 | 9 | 8 | 2 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.