SIERRA NEVADA GASTROENTEROLOGY MEDICAL ASSOCIATES, INC.
NPI 1407928641
Specialist in Grass Valley, CA
About Sierra Nevada Gastroenterology Medical Associates, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIERRA NEVADA GASTROENTEROLOGY MEDICAL ASSOCIATES, INC. (NPI 1407928641) is a healthcare organization registered as a specialist in Grass Valley, California and active in the NPI registry since November 2006. The organization lists Andrew Chang, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sierra Nevada Gastroenterology Medical Associates, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Sierra Nevada Gastroenterology Medical Associates, Inc., which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (7)
Grass Valley, CA 95945
Grass Valley, CA 95945
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 Sierra Nevada Gastroenterology Medical Associates, Inc.'s NPI number?
The NPI number for Sierra Nevada Gastroenterology Medical Associates, Inc. is 1407928641. It was assigned to this organization in the NPPES registry on November 14, 2006.
Where is Sierra Nevada Gastroenterology Medical Associates, Inc. located?
Sierra Nevada Gastroenterology Medical Associates, Inc. is located at 300 Sierra College Dr Ste.105, Grass Valley, CA 95945. The listed phone number is (530) 273-3377.
What is Sierra Nevada Gastroenterology Medical Associates, Inc.'s specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Sierra Nevada Gastroenterology Medical Associates, Inc. enrolled in Medicare?
Yes. Sierra Nevada Gastroenterology Medical Associates, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Sierra Nevada Gastroenterology Medical Associates, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Sierra Nevada Gastroenterology Medical Associates, 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 Pathology (4) and Gastroenterology (3). Of these, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Sierra Nevada Gastroenterology Medical Associates, Inc. was last updated on April 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Sierra Nevada Gastroenterology Medical Associates, Inc. · NPI 1407928641
Specialist organization in Grass Valley, California. Organization record, active in the CMS NPPES registry since November 14, 2006.
## Identity
- **NPI:** 1407928641 (Entity type: Organization)
- **Enumerated:** November 14, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Andrew Chang, PRESIDENT
## Practice location
- **Address:** 300 SIERRA COLLEGE DR, STE.105, Grass Valley, CA 95945-5082
- **Phone:** (530) 273-3377 · **Fax:** (530) 273-3387
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Pathology (4), Gastroenterology (3); 2 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 23, 2008
- **Other identifiers:** Medicare ID-Type Unspecified ZZZ22428Z (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1407928641) · Data from the CMS NPPES public registry.