Allyson Seibert, CRNP
Allyson Seibert, CRNP is a Family Nurse Practitioner in Philadelphia, PA, registered under NPI 1003520628.
Getting there
Here is what surrounds this office in Philadelphia, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 900 ft away at Ontario West Parking Garage. The nearest transit stop is 0.33 mi away. A pharmacy sits 1,027 ft from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 545 ft away.
Getting here and what is nearby
Parking Ontario Parking Garage 284 ft ~2 min
Coffee Starbucks 545 ft ~3 min
Parking Carlisle West Parking Garage 719 ft ~3 min
3400 North Carlisle Street, Philadelphia
Transit 786 ft ~3 min
Parking Ontario West Parking Garage 900 ft ~4 min
3301 North 15th Street, Philadelphia
Pharmacy Rite Aid 1,027 ft ~4 min
Convenience Corner Food Market 0.24 mi ~5 min
Transit 0.28 mi ~6 min
Restaurant Dunkin' 0.29 mi ~6 min
3705 Germantown Avenue, Philadelphia 19140
04:30-19:00
Restaurant McDonald's 0.30 mi ~6 min
3137 North Broad Street, Philadelphia 19132
06:00-23:00
Transit 0.33 mi ~7 min
Convenience Primo's Grocery 0.34 mi ~7 min
Convenience 17th St. Deli 0.35 mi ~7 min
Restaurant KFC 0.41 mi ~9 min
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 |
|---|---|---|
| SP026731 | PA | Family Nurse Practitioner primary |
This provider holds licence SP026731 issued in PA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Nurse Practitioner
- PAC ID
- 8224400163
- Enrollment ID
- I20230202001691
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003520628 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 9, 2023 |
| Last updated | May 26, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | CRNP |
| Practice address |
3401 N BROAD ST Philadelphia, PA 19140 (215) 707-3008 Fax (215) 707-1387 |
| Mailing address |
3509 N BROAD ST Philadelphia, PA 19140 |
| Other names |
Allyson Petosa Former Legal Business 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 | 5 | 2 | 0 | 6 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 2 | 0 | 6 | 4 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.