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DIGESTIVE DISEASE CONSULTANTS OF ORANGE COUNTY INC
NPI 1780843458
Internal Medicine - Gastroenterology in Irvine, CA

Active since June 06, 2008CLIA 05D2115034 · Certificate of Compliance
113 WATERWORKS WAY, SUITE 155, IRVINE, CA 92618(949) 612-9090(949) 612-9091 Get Directions Write a Review

NPPES record last updated: October 22, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 22, 2019, May 22, 2019, Jan 9, 2017 (3 updates tracked since 2017).

About Digestive Disease Consultants Of Orange County Inc NPPES

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

DIGESTIVE DISEASE CONSULTANTS OF ORANGE COUNTY INC (NPI 1780843458) is a healthcare organization registered as a gastroenterology in Irvine, California and active in the NPI registry since June 2008. The organization holds a CLIA Certificate of Compliance certificate valid through January 10, 2027 and lists Paul S Lee, Owner, as its authorized official.

NPPES Registry Identity

NPI1780843458
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameDIGESTIVE DISEASE CONSULTANTS OF ORANGE COUNTY INC
Location Address113 WATERWORKS WAY, SUITE 155Irvine, CA 92618-3167
Mailing AddressPo Box 53366Irvine, CA 92619-3366 · (949) 612-9090 · Fax (949) 612-9091
Phone(949) 612-9090
Fax(949) 612-9091
Organization SubpartNo
Authorized OfficialPaul S LeeOwner · (949) 612-9090
Enumeration DateJune 6, 2008
Last NPPES UpdateOctober 22, 20193 updates tracked since enumeration
✔ NPI 1780843458 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A79889
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.
Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X
113 WATERWORKS WAY, Irvine, CA 92618
Open in Google Maps ↗

Other Identifiers 1

OtherB836611CA · Kaiser National User Id

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Digestive Disease Consultants Of Orange County Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

11

Medicare enrollment records show 11 clinicians reassign Medicare billing to Digestive Disease Consultants Of Orange County Inc, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 10 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 4

Gastroenterology6
Nurse Practitioner3
Internal Medicine1
Pathology1

Clinicians, nearest first (11)

Paul Lee, MD
Gastroenterology
NPI 1760531693
113 WATERWORKS WAY SUITE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
Victor Yu, M.D.
Gastroenterology
NPI 1235205477
113 WATERWORKS WAY SUITE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
Shahrooz Bemanian
Internal Medicine
NPI 1629123070
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
David Choi, D.O.
Gastroenterology
NPI 1922490044
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
Grace Liu, NP
Nurse Practitioner
NPI 1740994797
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
Khatere Naderi-Ashour, AGNP
Nurse Practitioner
NPI 1295446078
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOS✔ Accepts MedicareSame address
Timothy Zaki, MD
Gastroenterology
NPI 1790312486
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 612-9090
✔ PECOSSame address
Heba Ashraf, MD
Gastroenterology
NPI 1720492267
113 WATERWORKS WAY STE 155
Irvine, CA 92618
(949) 258-7229
✔ PECOS✔ Accepts Medicare0.1 mi
Lina Ho
Nurse Practitioner
NPI 1538835079
150 PAULARINO AVE STE D182
Costa Mesa, CA 92626
(949) 668-5227
✔ PECOS6.6 mi
Khodadad Mehraein, M.D.
Pathology
NPI 1316147374
1415 E 17TH ST SUITE 280
Santa Ana, CA 92705
(562) 225-2002
✔ PECOS✔ Accepts Medicare8.2 mi
Matthew Oman, M.D.
Gastroenterology
NPI 1548461155
11175 CAMPUS ST
Loma Linda, CA 92350
(909) 558-8242
✔ PECOS✔ Accepts Medicare39 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Compliance 05D2115034

Digestive Disease Consultants Of Orange County Inc · Irvine, CA
Active · expires Jan 10, 2027
CLIA Number05D2115034
Laboratory TypePhysician Office
Certificate Effective DateJanuary 11, 2025
Certificate Expiration DateJanuary 10, 2027
Laboratory DirectorKhodadad Mehraein MD
Laboratory Phone(949) 612-9090
Laboratory LocationDigestive Disease Consultants Of Orange County Inc113 Waterworks Way Ste 155, Irvine, CA 92618
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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 Digestive Disease Consultants Of Orange County Inc's NPI number?

The NPI number for Digestive Disease Consultants Of Orange County Inc is 1780843458. It was assigned to this organization in the NPPES registry on June 6, 2008.

Where is Digestive Disease Consultants Of Orange County Inc located?

Digestive Disease Consultants Of Orange County Inc is located at 113 Waterworks Way Suite 155, Irvine, CA 92618. The listed phone number is (949) 612-9090.

What is Digestive Disease Consultants Of Orange County Inc's specialty?

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

Is Digestive Disease Consultants Of Orange County Inc enrolled in Medicare?

Yes. Digestive Disease Consultants Of Orange County Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Digestive Disease Consultants Of Orange County Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians in 4 Medicare specialties reassign their Medicare billing to Digestive Disease Consultants Of Orange County Inc. A 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 the clinician's services. The largest specialties are Gastroenterology (6), Nurse Practitioner (3) and Internal Medicine (1). Of these, 7 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Digestive Disease Consultants Of Orange County Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 05D2115034) is associated with this NPI, valid through January 10, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Digestive Disease Consultants Of Orange County Inc was last updated on October 22, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.