GILLIAN GRANNUM (PHD) – Clinical Psychologist, NPI 1407292162
Clinical Psychologist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,669 CLINICAL PSYCHOLOGIST in PA
Provider Addresses for GILLIAN GRANNUM (PHD)
169 Martin Ave
Ephrata, PA 175221724
Phone: (717) 733-0311
Fax: (717) 738-6735
Type: Location
69 WESTPOINTE DR
EPHRATA, PA 175222488
Phone: (267) 934-1940
Type: Mailing
354 N READING RD
EPHRATA, PA 175221651
Phone: (267) 934-1940
Type: Location
601 MEMORY LN
YORK, PA 174022231
Phone: (717) 851-1405
Fax: (717) 851-6969
Type: Mailing
344 N READING RD
EPHRATA, PA 175221651
Phone: (717) 738-1125
Fax: (717) 738-0606
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2018-12-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20181218001127 | I | Clinical Psychologist | PA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 17522)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | PA | |
| - | KY | |
| - | OH | |
| - | PA | |
| Clinical Psychologist | PA | |
| Clinical Social Worker | PA | |
| - | PA | |
| - | PA | |
| P S Y C H I A T R Y | PA | |
| - | PA |
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