1. Home
  2. Directory
  3. California
  4. Fullerton
  5. Clinic Center
  6. NPI Profile

DOUGLAS NITTA, M.D., INC.
NPI 1902115934
Clinic/Center in Fullerton, CA

Active since September 24, 2010
301 W. BASTANCHURY ROAD, SUITE 155, FULLERTON, CA 92835(714) 773-1116 Get Directions Write a Review

NPPES record last updated: September 24, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Douglas Nitta, M.d., Inc. NPPES

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

DOUGLAS NITTA, M.D., INC. (NPI 1902115934) is a healthcare organization registered as a clinic/center in Fullerton, California and active in the NPI registry since September 2010. The organization lists Douglas Nitta, President, as its authorized official.

NPPES Registry Identity

NPI1902115934
Entity TypeOrganization
Primary Taxonomy261Q00000X
Legal Business NameDOUGLAS NITTA, M.D., INC.
Location Address301 W. BASTANCHURY ROAD, SUITE 155Fullerton, CA 92835
Mailing Address301 W. Bastanchury Road, Suite 155Fullerton, CA 92835
Phone(714) 773-1116
Organization SubpartNo
Authorized OfficialDouglas NittaPresident · (714) 773-1116
Enumeration DateSeptember 24, 2010
✔ NPI 1902115934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/CenterAmbulatory Health Care Facilities
Taxonomy Code261Q00000X
License✔ Licensed in CA · G45491
Definition
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).
301 W. BASTANCHURY ROAD, Fullerton, CA 92835
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINA50065CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Douglas Nitta, M.d., Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Douglas Nitta, M.D., Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Douglas Nitta, MD
Family Practice
NPI 1912920125
301 W BASTANCHURY RD SUITE 155
Fullerton, CA 92835
(714) 773-1116
✔ PECOS✔ Accepts Medicare0.3 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 Douglas Nitta, M.D., Inc.'s NPI number?

The NPI number for Douglas Nitta, M.D., Inc. is 1902115934. It was assigned to this organization in the NPPES registry on September 24, 2010.

Where is Douglas Nitta, M.D., Inc. located?

Douglas Nitta, M.D., Inc. is located at 301 W. Bastanchury Road Suite 155, Fullerton, CA 92835. The listed phone number is (714) 773-1116.

What is Douglas Nitta, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.

Is Douglas Nitta, M.D., Inc. enrolled in Medicare?

Yes. Douglas Nitta, M.D., Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Douglas Nitta, M.D., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Douglas Nitta, M.D., 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Douglas Nitta, M.D., Inc. was last updated on September 24, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.