Carissa Werkheiser, PA
Carissa Werkheiser, PA is a Physician Assistant in Allentown, PA, registered under NPI 1003181397.
Getting there
Here is what surrounds this office in Allentown, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 0.28 mi away. There is EV charging 0.37 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town.
Getting here and what is nearby
Restaurant Sal's Pizza 935 ft ~4 min
4767 Tilghman Street, Allentown 18104
Restaurant China House 978 ft ~4 min
4783 Tilghman Street, Allentown 18104
Restaurant Thai Avenue Restaurant 1,020 ft ~4 min
Parking 0.21 mi ~5 min
Parking 0.24 mi ~5 min
Parking 0.28 mi ~6 min
Hotel Allenwood Motel 0.31 mi ~7 min
EV charging Tesla Supercharger 0.37 mi ~8 min
Hotel Red Carpet Inn 0.37 mi ~8 min
731 Hausman Road, Allentown 18104
Hotel Red Carpet Inn 0.38 mi ~8 min
731 Hausman Road, Allentown 18104
Grocery Grocery Outlet 0.46 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
| Licence | State | Specialty |
|---|---|---|
| MA055245 | PA | Physician Assistant primary |
This provider holds licence MA055245 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 - Physician Assistant
- PAC ID
- 1052574589
- Enrollment ID
- I20120521000553
Medicare enrolment is recorded as approved under the provider type Practitioner - Physician Assistant. 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 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 | 1003181397 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 20, 2012 |
| Last updated | Dec 24, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PA |
| Practice address |
798 HAUSMAN RD SUITE 270 Allentown, PA 18104 (610) 871-3400 Fax (610) 871-5566 |
| Mailing address |
PO BOX 783311 Philadelphia, PA 19178 |
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 | 1 | 8 | 1 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 2 | 3 | 9 |
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.