Adrienne Carnahan, PA-C
Adrienne Carnahan, PA-C is a Physician Assistant in Lancaster, PA, registered under NPI 1003045139.
Getting there
Here is what surrounds this office in Lancaster, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 0.27 mi away. The nearest transit stop is 0.45 mi away, served by Manheim Pike and Pizza Hut. A pharmacy sits 0.50 mi from the entrance (Weis Markets Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.31 mi away.
Getting here and what is nearby
Hotel Homewood Suites by Hilton Lancaster 487 ft ~2 min
Parking 602 ft ~3 min
Convenience Turkey Hill 902 ft ~4 min
Gas station Turkey Hill 975 ft ~4 min
Hotel Fairfield Inn & Suites Lancaster 924 ft ~4 min
Restaurant Chili's 0.23 mi ~5 min
1525 Manheim Pike, Lancaster 17601
Mo-Th,Su 11:00-22:00; Fr-Sa 11:00-23:00
Parking 0.25 mi ~6 min
Restaurant Big Dog Craft Brewing 0.26 mi ~6 min
1559 Manheim Pike, Lancaster 17601
Mo off; Tu-Th 11:30-21:00; Fr-Sa 11:30-22:00; Su 11:30-20:00
Restaurant KFC 0.26 mi ~6 min
Parking 0.27 mi ~6 min
Coffee Taylor Chip 0.31 mi ~7 min
Transit 0.33 mi ~7 min
Transit Plaza Boulevard and Manheim Pike 0.40 mi ~8 min
Transit Manheim Pike and Pizza Hut 0.45 mi ~10 min
Pharmacy Weis Markets Pharmacy 0.50 mi ~10 min
1643 Manheim Pike, Lancaster 17601
Mo-Fr 09:00-13:00,13:30-21:00; Sa 09:00-13:00,13:30-18:00; Su 10:00-13:00,13:30-14:00
Grocery Weis 0.51 mi ~11 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 |
|---|---|---|
| MA055499 | PA | Physician Assistant primary |
This provider holds licence MA055499 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
- 4082750237
- Enrollment ID
- I20120823000433
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 | 1003045139 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 10, 2009 |
| Last updated | Jan 30, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PA-C |
| Practice address |
231 GRANITE RUN DR Lancaster, PA 17601 (717) 560-4200 Fax (717) 560-4159 |
| Other names |
Adrienne Riotte 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 | 0 | 4 | 5 | 1 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 1 | 1 | 6 |
Sum = 41 · next multiple of 10 = 50 · 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.