DR. SHANNON LEIGH TOSOUNIAN D.O.
NPI 1013398734
Internal Medicine - Gastroenterology in Center Valley, PA
About Dr. Shannon Leigh Tosounian D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHANNON LEIGH TOSOUNIAN D.O. (NPI 1013398734) is an individual gastroenterology provider in Center Valley, Pennsylvania, licensed in Pennsylvania (OS021519) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with St Lukes Quakertown Hospital, and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2015).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Shannon Leigh Tosounian D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Shannon Tosounian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Center Valley, PA 18034
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: St Lukes Physician Group Inc
- 2,851 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 12
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Lukes Quakertown Hospital
Acute Care Hospitals · Quakertown, PASt Luke's Hospital Bethlehem
Acute Care Hospitals · Bethlehem, PASt Luke's Miners Memorial Hospital
Acute Care Hospitals · Coaldale, PASt Luke's Hospital - Carbon Campus
Acute Care Hospitals · Lehighton, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 18034 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Shannon Tosounian's NPI number?
The NPI number for Shannon Tosounian is 1013398734. It was assigned to this individual provider in the NPPES registry on June 18, 2015.
Where is Shannon Tosounian located?
Shannon Tosounian practices at 5405 Saucon Creek Rd Suite 200, Center Valley, PA 18034. The listed phone number is (484) 526-6545.
What is Shannon Tosounian's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Shannon Tosounian enrolled in Medicare?
Yes. Shannon Tosounian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Shannon Tosounian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Tosounian reassigns Medicare benefits to St. Luke's Physician Group, Inc. (Center Valley, PA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Shannon Tosounian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Shannon Tosounian affiliated with any hospitals?
According to CMS data, Shannon Tosounian is affiliated with St Lukes Quakertown Hospital, St Luke's Hospital Bethlehem, St Luke's Miners Memorial Hospital and St Luke's Hospital - Carbon Campus.
When was this NPI record last updated?
The NPPES record for Shannon Tosounian was last updated on September 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Shannon Leigh Tosounian, D.O. · NPI 1013398734
Gastroenterology physician in Center Valley, Pennsylvania. Individual provider, active in the CMS NPPES registry since June 18, 2015.
## Identity
- **NPI:** 1013398734 (Entity type: Individual)
- **Enumerated:** June 18, 2015
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** OS021519 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 5405 SAUCON CREEK RD, SUITE 200, Center Valley, PA 18034-3018
- **Phone:** (484) 526-6545
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** St. Luke's Physician Group, Inc. (NPI 1437101540, Center Valley, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie College Of Osteopathic Medicine, Erie, class of 2015
## Record status
- **NPPES last updated:** September 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1013398734) · Data from the CMS NPPES public registry.