Shannon Tosounian, D.O.
NPI 1013398734 · Gastroenterology Physician · Center Valley, PA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shannon Tosounian, D.O. is a Gastroenterology Physician provider in Center Valley, PA (NPI 1013398734).
Provider details
- NPI number
- 1013398734
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- OS021519 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
583 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 111 | $123 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 84 | $100 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 63 | $245 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 58 | $78 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 46 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 94 | 39 |
| Pantoprazole Sodium | 62 | 18 |
| Esomeprazole Magnesium | 43 | 14 |
| Dicyclomine Hcl | 31 | 15 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 22 | 21 |
| Famotidine | 20 | — |
| Linaclotidebrand: Linzess | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-18
- Last updated
- 2025-09-12
- Certified
- 2025-09-12
Frequently asked questions
- What is Shannon Tosounian's NPI number?
- Shannon Tosounian's National Provider Identifier (NPI) is 1013398734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Tosounian's specialty?
- Shannon Tosounian is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Shannon Tosounian located?
- Shannon Tosounian's practice location on file with NPPES is 5405 Saucon Creek Rd, Center Valley, PA 18034-3018.
- What is Shannon Tosounian's phone number?
- The practice phone number listed in the NPPES registry for Shannon Tosounian is (484) 526-6545.
- Does Shannon Tosounian accept Medicare?
- Shannon Tosounian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shannon Tosounian's NPI active?
- Yes — Shannon Tosounian's NPI (1013398734) is active in the NPPES registry as of the last update on 2025-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.