Gretchen Zettlemoyer, CRNP
Gretchen Zettlemoyer, CRNP is an Acute Care Nurse Practitioner in Wynnewood, PA, registered under NPI 1851720932.
Getting there
The practice address on file is 100 E LANCASTER AVE HEART PAVILION, MEZZANINE, Wynnewood, PA 19096. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| SP013283 | PA | Acute Care Nurse Practitioner primary |
This provider holds licence SP013283 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
- 4385969997
- Enrollment ID
- I20150202001367
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 Acute Care covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2100X
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 | 1851720932 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 8, 2013 |
| Last updated | Jan 21, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | CRNP |
| Practice address |
100 E LANCASTER AVE HEART PAVILION, MEZZANINE Wynnewood, PA 19096 (484) 476-1000 Fax (484) 476-9000 |
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 | 8 | 5 | 1 | 7 | 2 | 0 | 9 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 1 | 1 | 5 | 2 | 0 | 9 | 6 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.