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ADVANCED GASTROENTEROLOGY ASSOCIATES
NPI 1003199076
Internal Medicine - Gastroenterology in Crystal River, FL

Active since September 26, 2011CLIA 10D2051281 · Waiver
6152 W CORPORATE OAKS DR, CRYSTAL RIVER, FL 34429(352) 564-3900(352) 564-3903 Get Directions Write a Review

NPPES record last updated: August 7, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Advanced Gastroenterology Associates NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ADVANCED GASTROENTEROLOGY ASSOCIATES (NPI 1003199076) is a healthcare organization registered as a gastroenterology in Crystal River, Florida and active in the NPI registry since September 2011. The organization holds a CLIA Waiver certificate valid through December 16, 2026 and lists Barrett Jeffrey Wallis, Owner, as its authorized official.

NPPES Registry Identity

NPI1003199076
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameB JEFFREY WALLIS MD PA
Location Address6152 W CORPORATE OAKS DRCrystal River, FL 34429-8722
Mailing Address6152 W Corporate Oaks DrCrystal River, FL 34429-8722 · (352) 564-3900 · Fax (352) 564-3906
Phone(352) 564-3900
Fax(352) 564-3903
Organization SubpartNo
Authorized OfficialBarrett Jeffrey WallisOwner · (352) 400-8000
Enumeration DateSeptember 26, 2011
Last NPPES UpdateAugust 7, 2012
✔ NPI 1003199076 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
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.
6152 W CORPORATE OAKS DR, Crystal River, FL 34429
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Other Names 1

Doing Business AsAdvanced Gastroenterology Associates

Other Identifiers 2

Medicaid001690000FL
Medicare UPIN50520FL

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 10D2051281

Advanced Gastroenterology · Crystal River, FL
Active · expires Dec 16, 2026
CLIA Number10D2051281
Laboratory TypePhysician Office
Certificate Effective DateDecember 17, 2024
Certificate Expiration DateDecember 16, 2026
Laboratory DirectorB Jeffrey Wallis
Laboratory Phone(352) 564-3900
Laboratory LocationAdvanced Gastroenterology6152 W Corporate Oaks Dr, Crystal River, FL 34429
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

QUINTESSENTIAL HEALTH SERVICES, INC
Clinic/Center (Rural Health)
6152 W CORPORATE OAKS DR
CRYSTAL RIVER, FL 34429
Citrus County (352) 794-5086
BARRETT JEFFREY WALLIS MD
Internal Medicine (Gastroenterology)
6152 W CORPORATE OAKS DR
CRYSTAL RIVER, FL 34429
Citrus County (352) 564-3900
KENNETH WAYNE SPILIOS PA-C
Physician Assistant (Medical)
6152 W CORPORATE OAKS DR
CRYSTAL RIVER, FL 34429
Citrus County (352) 794-5086
MR. JOSHUA TAYLOR WILLIAMS PA-C
Physician Assistant
6152 W CORPORATE OAKS DR
CRYSTAL RIVER, FL 34429
Citrus County (352) 564-3900

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 B Jeffrey Wallis MD PA's NPI number?

The NPI number for B Jeffrey Wallis MD PA is 1003199076. It was assigned to this organization in the NPPES registry on September 26, 2011. The provider is doing business as Advanced Gastroenterology Associates.

Where is B Jeffrey Wallis MD PA located?

B Jeffrey Wallis MD PA is located at 6152 W Corporate Oaks Dr, Crystal River, FL 34429. The listed phone number is (352) 564-3900.

What is B Jeffrey Wallis MD PA's specialty?

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

Does B Jeffrey Wallis MD PA hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 10D2051281) is associated with this NPI, valid through December 16, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for B Jeffrey Wallis MD PA was last updated on August 7, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.