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ROBERT J. WIELENGA, MD, A PROFESSIONAL CORPORATION
NPI 1043363807
Family Medicine in Downey, CA

Active since January 18, 2007CLIA 05D1018990 · Waiver
10835 NEW ST, DOWNEY, CA 90241(562) 923-9100(562) 923-9103 Get Directions Write a Review

NPPES record last updated: February 26, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Robert J. Wielenga, Md, A Professional Corporation NPPES

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

ROBERT J. WIELENGA, MD, A PROFESSIONAL CORPORATION (NPI 1043363807) is a healthcare organization registered as a family medicine in Downey, California and active in the NPI registry since January 2007. The organization holds a CLIA Waiver certificate valid through November 5, 2027 and lists Robert James Wielenga, Ceo, as its authorized official.

NPPES Registry Identity

NPI1043363807
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameROBERT J. WIELENGA, MD, A PROFESSIONAL CORPORATION
Location Address10835 NEW STDowney, CA 90241-3714
Mailing Address10835 New StDowney, CA 90241-3714 · (562) 923-9100 · Fax (562) 923-9103
Phone(562) 923-9100
Fax(562) 923-9103
Organization SubpartNo
Authorized OfficialRobert James WielengaCeo · (562) 923-9100
Enumeration DateJanuary 18, 2007
Last NPPES UpdateFebruary 26, 2020
✔ NPI 1043363807 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · G81044
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
10835 NEW ST, Downey, CA 90241
Open in Google Maps ↗

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 05D1018990

Robert J Wielenga MD · Downey, CA
Active · expires Nov 5, 2027
CLIA Number05D1018990
Laboratory TypePhysician Office
Certificate Effective DateNovember 6, 2025
Certificate Expiration DateNovember 5, 2027
Laboratory DirectorRobert J. Wielenga MD
Laboratory Phone(562) 923-9100
Laboratory LocationRobert J Wielenga MD10835 New St, Downey, CA 90241
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 3

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

MONIQUE DENISE LEELIN MACASAET NP-C
Nurse Practitioner (Family)
10835 NEW ST
DOWNEY, CA 90241
Los Angeles County (562) 923-9100
VANESSA CLARK PA-C
Physician Assistant (Medical)
10835 NEW ST
DOWNEY, CA 90241
Los Angeles County (562) 923-9100
DR. ROBERT JAMES WIELENGA M.D.
Family Medicine
10835 NEW ST
DOWNEY, CA 90241
Los Angeles County (562) 923-9100

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 Robert J. Wielenga, MD, A Professional Corporation's NPI number?

The NPI number for Robert J. Wielenga, MD, A Professional Corporation is 1043363807. It was assigned to this organization in the NPPES registry on January 18, 2007.

Where is Robert J. Wielenga, MD, A Professional Corporation located?

Robert J. Wielenga, MD, A Professional Corporation is located at 10835 New St, Downey, CA 90241. The listed phone number is (562) 923-9100.

What is Robert J. Wielenga, MD, A Professional Corporation's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Does Robert J. Wielenga, MD, A Professional Corporation hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1018990) is associated with this NPI, valid through November 5, 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 Robert J. Wielenga, MD, A Professional Corporation was last updated on February 26, 2020. 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.