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MERCED GASTROENTEROLOGY MEDICAL OFFICE INC
NPI 1902980675
Specialist in Merced, CA

Active since October 25, 2006
386 W OLIVE AVE, SUITE A, MERCED, CA 95348(209) 724-9900(209) 724-9901 Get Directions Write a Review

NPPES record last updated: December 30, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Merced Gastroenterology Medical Office Inc NPPES

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

MERCED GASTROENTEROLOGY MEDICAL OFFICE INC (NPI 1902980675) is a healthcare organization registered as a specialist in Merced, California and active in the NPI registry since October 2006. The organization lists Sivakumar Reddy Munnangi, President, as its authorized official.

NPPES Registry Identity

NPI1902980675
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameMERCED GASTROENTEROLOGY MEDICAL OFFICE INC
Location Address386 W OLIVE AVE, SUITE AMerced, CA 95348-3137
Mailing Address386 W Olive Ave, Suite AMerced, CA 95348-3137 · (209) 724-9900 · Fax (209) 724-9901
Phone(209) 724-9900
Fax(209) 724-9901
Organization SubpartNo
Authorized OfficialSivakumar Reddy MunnangiPresident · (209) 724-9900
Enumeration DateOctober 25, 2006
Last NPPES UpdateDecember 30, 2024
NPPES CertifiedDecember 30, 2024
✔ NPI 1902980675 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · A052645
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
386 W OLIVE AVE, Merced, CA 95348
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A526450CA

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Merced Gastroenterology Medical Office Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Merced Gastroenterology Medical Office Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Sivakumar Munnangi, M.D.
Gastroenterology
NPI 1447432463
386 W OLIVE AVE SUITE A
Merced, CA 95348
(209) 724-9900
✔ PECOS✔ Accepts MedicareSame address
Tawny Guerrero, NP
Nurse Practitioner
NPI 1578158580
1210 E ALMOND AVE
Madera, CA 93637
(559) 675-5530
✔ PECOS35 mi

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

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 Merced Gastroenterology Medical Office Inc's NPI number?

The NPI number for Merced Gastroenterology Medical Office Inc is 1902980675. It was assigned to this organization in the NPPES registry on October 25, 2006.

Where is Merced Gastroenterology Medical Office Inc located?

Merced Gastroenterology Medical Office Inc is located at 386 W Olive Ave Suite A, Merced, CA 95348. The listed phone number is (209) 724-9900.

What is Merced Gastroenterology Medical Office Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Merced Gastroenterology Medical Office Inc enrolled in Medicare?

Yes. Merced Gastroenterology Medical Office Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Merced Gastroenterology Medical Office Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Merced Gastroenterology Medical Office Inc, in Gastroenterology and Nurse Practitioner. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Merced Gastroenterology Medical Office Inc was last updated on December 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.