Gillian D. Grannum, PhD
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2013
- Practice locations
- 2
- Practice address
- 344 N Reading Rd, Ephrata, PA 17522
- Practice phone
- Call (717) 738-1125
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd)
Behavioral health practice · Ephrata, Pennsylvania
Find Gillian Grannum's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Gillian D. Grannum is a clinical psychologist in Ephrata, Pennsylvania
Gillian Grannum practices at Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd) in Ephrata, Pennsylvania.
Gillian Grannum's NPI, 1407292162, was assigned on May 21, 2013. Gillian Grannum holds Pennsylvania license PS018690.
- NPI
- 1407292162NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355686437
- NPI enumeration date
- May 21, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (717) 738-1125
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gillian D. Grannum practices at 2 locations in Ephrata, Pennsylvania
Gillian Grannum's primary practice is Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd), at 344 N Reading Rd, Ephrata, PA 17522. The practice phone is (717) 738-1125. The NPI Registry lists Gillian Grannum's practice address as 334 N Reading Rd, Ephrata, PA 17522.
- Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd)Primary344 N Reading Rd, Ephrata, PA 17522Phone(717) 738-1125
- NPI Registry address334 N Reading Rd, Ephrata, PA 17522 · Lancaster County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Gillian D. Grannum is affiliated with 1 site of care and 2 medical groups
Gillian Grannum's primary practice is Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd) in Ephrata, Pennsylvania. The medical group on file is WellSpan Philhaven. Dmand AI also links Gillian Grannum to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Gillian D. Grannum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gillian Grannum practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd) | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Gillian D. Grannum is one of 828 clinical psychologists in Pennsylvania
Clinical is Gillian Grannum's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. Gillian Grannum is licensed in Pennsylvania.
Specialties and state licenses
- Clinical psychologist, PennsylvaniaPrimary
Clinical psychologists near Gillian Grannum
Counts of clinical psychologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Gillian D. Grannum's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Gillian Grannum's median patient age at 56, with 86% women.
Gillian Grannum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women86%
- Men14%
Source: Dmand AI Patient Panel Data
Gillian D. Grannum offers telehealth to Medicare patients
Gillian Grannum accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Gillian Grannum as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Gillian D. Grannum's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Gillian D. Grannum
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What is Gillian D. Grannum's NPI number?
Gillian D. Grannum's NPI number is 1407292162. It was assigned on May 21, 2013, and it is active in the NPI Registry.
What does Gillian D. Grannum specialize in?
Gillian D. Grannum is a clinical psychologist in Ephrata, Pennsylvania. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does Gillian D. Grannum practice?
Gillian Grannum practices at 344 N Reading Rd, Ephrata, PA 17522. Gillian Grannum also practices at 334 N Reading Rd, Ephrata, PA 17522. Gillian Grannum's primary practice is Wellspan Medical Group - Behavioral & Mental Health - Ephrata (N Reading Rd) in Ephrata, Pennsylvania. Dmand AI also links Gillian Grannum to 1 medical group.
What is Gillian D. Grannum's office phone number?
The practice phone on file for Gillian Grannum is (717) 738-1125.
What is Gillian D. Grannum's medical license number?
Gillian Grannum holds Pennsylvania license PS018690.
What medical group is Gillian D. Grannum part of?
Gillian Grannum is linked to WellSpan Philhaven. Dmand AI links Gillian Grannum to 1 more medical group.
Does Gillian D. Grannum accept Medicare?
Yes. CMS lists Gillian Grannum as accepting Medicare assignment.
Does Gillian D. Grannum offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Gillian Grannum as offering telehealth services.
How long has Gillian D. Grannum been practicing?
Gillian Grannum graduated from medical school in 2017, 9 years ago.
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