DR. SHANNON LEIGH TOSOUNIAN D.O.
NPI 1013398734
Internal Medicine - Gastroenterology in Center Valley, PA

Q: 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.

Q: What is Shannon Tosounian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: 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 11 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.

Active since June 18, 2015PECOS EnrolledAccepts Medicare Assignment

95.64/100

CMS Quality Rating

5405 SAUCON CREEK RD, SUITE 200, CENTER VALLEY, PA 18034(484) 526-6545 Get Directions Write a Review

NPPES record last updated: September 12, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 12, 2025, Nov 22, 2024 (2 updates tracked since 2024).

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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

NPI1013398734

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. SHANNON LEIGH TOSOUNIANCredential: D.O.

Location Address5405 SAUCON CREEK RD, SUITE 200Center Valley, PA 18034-3018

Mailing Address4505 Saucon Creek RdCenter Valley, PA 18034-8481 · (484) 526-6545

Phone(484) 526-6545

Sole ProprietorNo

Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2015

Enumeration DateJune 18, 2015

Last NPPES UpdateSeptember 12, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 12, 2025

✔ NPI 1013398734 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in PA · OS021519

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

5405 SAUCON CREEK RD, Center Valley, PA 18034

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID1355749094

PECOS Enrollment IDI20211008002855

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

111 services80 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

84 services84 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

63 services63 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

58 services40 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

39 services39 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

38 services36 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

29 services27 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

26 services26 patients

Study of rectum sensitivity and function 91122

This procedure examines the rectum's sensitivity and functionality. It involves a small, soft balloon inserted into the rectum and inflated to various degrees. The goal is to assess how well your rectum can sense and respond to different volumes. It's a crucial test for diagnosing certain digestive issues.

25 services25 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

23 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

22 services22 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

19 services19 patients

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, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390035

Location3000 St. Luke's DriveQuakertown, PA 18951 · Bucks County

Emergency services Birthing friendly

St Luke's Hospital Bethlehem

Acute Care Hospitals · Bethlehem, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390049

Location801 Ostrum StreetBethlehem, PA 18015 · Northampton County

Emergency services Birthing friendly

St Luke's Miners Memorial Hospital

Acute Care Hospitals · Coaldale, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390183

Location360 W Ruddle StreetCoaldale, PA 18218 · Schuylkill County

Emergency services

St Luke's Hospital - Carbon Campus

Acute Care Hospitals · Lehighton, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390335

Location500 St Luke's DriveLehighton, PA 18235 · Carbon County

Emergency services

Physician 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.

New Patient

$126.34 typical visit price

range $54.64 – $166.87

Typical copayment $31.58 (range $13.66 – $41.71)

Most-billed visit code 99204

Established Patient

$96.82 typical visit price

range $17.33 – $135.84

Typical copayment $24.20 (range $4.33 – $33.96)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

95.64/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

80.57

Promoting Interoperability

100

Improvement Activities

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.

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 11 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.