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EJ GUZMAN, MD INC
NPI 1891984670
Obstetrics & Gynecology in Norwalk, CA

Active since October 17, 2007CLIA 05D0980607 · Waiver
11514 ROSECRANS AVE, NORWALK, CA 90650(562) 929-9999(562) 929-0891 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Sep 18, 2017 (2 updates tracked since 2017).

About Ej Guzman, Md Inc NPPES

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

EJ GUZMAN, MD INC (NPI 1891984670) is a healthcare organization registered as an obstetrics & gynecology in Norwalk, California and active in the NPI registry since October 2007. The organization holds a CLIA Waiver certificate valid through May 26, 2028 and lists Eduardo Jose Guzman, Owner/medical Director, as its authorized official.

NPPES Registry Identity

NPI1891984670
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameEJ GUZMAN, MD INC
Location Address11514 ROSECRANS AVENorwalk, CA 90650-3802
Mailing Address11514 Rosecrans AveNorwalk, CA 90650-3802 · (562) 929-9999 · Fax (562) 929-0891
Phone(562) 929-9999
Fax(562) 929-0891
Organization SubpartNo
Authorized OfficialEduardo Jose GuzmanOwner/medical Director · (562) 929-9999
Enumeration DateOctober 17, 2007
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1891984670 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A50344
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedObstetrics & Gynecology · Urogynecology and Reconstructive Pelvic SurgeryTaxonomy 207VF0040X · License A50344 (CA)
11514 ROSECRANS AVE, Norwalk, CA 90650
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Other Identifiers 2

Medicaid00A503441CA
Medicaid00A503444CA

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)

Ej Guzman, Md 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 Ej Guzman, MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Eduardo Guzman, MD
Obstetrics/Gynecology
NPI 1982610887
11514 ROSECRANS AVE
Norwalk, CA 90650
(562) 929-9999
✔ PECOSSame address

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 Waiver 05D0980607

Ej Guzman, MD Inc · Norwalk, CA
Active · expires May 26, 2028
CLIA Number05D0980607
Laboratory TypePhysician Office
Certificate Effective DateMay 27, 2026
Certificate Expiration DateMay 26, 2028
Laboratory DirectorEduardo J. Guzman MD
Laboratory Phone(562) 929-9999
Laboratory LocationEj Guzman, MD Inc11514 Rosecrans Avenue, Norwalk, CA 90650
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Ej Guzman, MD Inc's NPI number?

The NPI number for Ej Guzman, MD Inc is 1891984670. It was assigned to this organization in the NPPES registry on October 17, 2007.

Where is Ej Guzman, MD Inc located?

Ej Guzman, MD Inc is located at 11514 Rosecrans Ave, Norwalk, CA 90650. The listed phone number is (562) 929-9999.

What is Ej Guzman, MD Inc's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Ej Guzman, MD Inc enrolled in Medicare?

Yes. Ej Guzman, MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ej Guzman, MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to Ej Guzman, MD 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.

Does Ej Guzman, MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0980607) is associated with this NPI, valid through May 26, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Ej Guzman, MD Inc was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.