Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Heather Lynn Diffendall, CRNP

Individual provider Gerontology Nurse Practitioner · NPI 1194197731

Heather Lynn Diffendall, CRNP is a Nurse Practitioner in Lebanon, Pennsylvania. Qualified in 2015, 11 years ago. Practices with Wellspan Medical Group, a 2,342-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
11
Licensed in
PA
In the registry since
2015
Specialties on file
2
What do these letters mean?
CRNP — Certified Registered Nurse Practitioner
The title Pennsylvania and some other states use for a nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

775 Norman Dr
Lebanon, PA 17042-7497
Phone: (717) 272-8173
Fax: (717) 272-4029
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 169 Martin Ave, Ephrata, PA 17522-1734 — (717) 738-6753
  • 252 S 4th St, Lebanon, PA 17042-6111 — (717) 639-3150
  • 1001 S George St, York, PA 17403-3676 — (717) 851-3467

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence SP015445 (PA)
Gerontology Nurse Practitioner Taxonomy 363LG0600X · Licence MD3716339 (PA)

Record details

NPI number1194197731
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedOctober 22, 2015
Last updated in NPPESMay 6, 2026
Certification dateMay 6, 2026
Mailing address601 Memory Ln, York, PA 17402-2231

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Wellspan Medical Group — 2342 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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