Gillian Grannum, PHD
NPI 1407292162 · Clinical Psychologist · Ephrata, PA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Grannum, PHD is a Clinical Psychologist provider in Ephrata, PA (NPI 1407292162).
Provider details
- NPI number
- 1407292162
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PS018690 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 169 Martin AveEphrata, PA 17522-1724Phone: (717) 733-0311Fax: (717) 738-6735
Registry dates
- Enumerated
- 2013-05-21
- Last updated
- 2024-09-16
- Certified
- 2024-09-16
Frequently asked questions
- What is Gillian Grannum's NPI number?
- Gillian Grannum's National Provider Identifier (NPI) is 1407292162, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Grannum's specialty?
- Gillian Grannum is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gillian Grannum located?
- Gillian Grannum's practice location on file with NPPES is 344 N Reading Rd, Ephrata, PA 17522-1651.
- What is Gillian Grannum's phone number?
- The practice phone number listed in the NPPES registry for Gillian Grannum is (717) 738-1125.
- Does Gillian Grannum accept Medicare?
- Gillian Grannum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Grannum's NPI active?
- Yes — Gillian Grannum's NPI (1407292162) is active in the NPPES registry as of the last update on 2024-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.