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ALAN E. GORENBERG MD
NPI 1770514945
Allergy & Immunology - Allergy in Orange, CA

Active since July 06, 2006
8506 E CHAPMAN AVE, ORANGE, CA 92869(714) 633-4666(714) 633-4640 Get Directions Write a Review

NPPES record last updated: February 12, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Alan E. Gorenberg Md NPPES

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

ALAN E. GORENBERG MD (NPI 1770514945) is a healthcare organization registered as an allergy in Orange, California and active in the NPI registry since July 2006. The organization lists Alan E. Gorenberg, President, as its authorized official.

NPPES Registry Identity

NPI1770514945
Entity TypeOrganization
Primary Taxonomy207KA0200X
Legal Business NameALAN E. GORENBERG MD, INC.
Location Address8506 E CHAPMAN AVEOrange, CA 92869-2461
Mailing Address8506 E Chapman AveOrange, CA 92869-2461 · (714) 633-4666 · Fax (714) 633-4640
Phone(714) 633-4666
Fax(714) 633-4640
Organization SubpartNo
Authorized OfficialAlan E. GorenbergPresident · (714) 633-4666
Enumeration DateJuly 6, 2006
Last NPPES UpdateFebruary 12, 2016
✔ NPI 1770514945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in CA · G60876
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
Also ListedSpecialistTaxonomy 174400000X · License G60876 (CA)
8506 E CHAPMAN AVE, Orange, CA 92869
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Other Names 1

Doing Business AsAlan E. Gorenberg Md

Other Identifiers 11

Medicare PINP00292900CA
Medicare PINDE4387CA
Medicare PIN00G608762CA
Medicare PINZZZ03747ZCA
Other1770514945CA · Npi (incorperated)
Medicare PINWG60879ACA
Other1730115221CA · Npi (individual)
Medicare PINW20699CA
Medicare PIN00G608761CA
OtherG60876CA · Medical Lic.
Medicare UPINE93428CA

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 MULTIPLE 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)

Alan E. Gorenberg Md 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 Alan E. Gorenberg MD, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Alan Gorenberg, MD
Allergy/Immunology
NPI 1730115221
8506 E CHAPMAN AVE
Orange, CA 92869
(714) 633-4666
✔ PECOS✔ Accepts Medicare1.5 mi
Chioma Enweasor, M.D
Allergy/Immunology
NPI 1184078099
15290 SUMMIT AVE STE B
Fontana, CA 92336
(909) 225-1900
✔ PECOS30 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 Alan E. Gorenberg MD, Inc.'s NPI number?

The NPI number for Alan E. Gorenberg MD, Inc. is 1770514945. It was assigned to this organization in the NPPES registry on July 6, 2006. The provider is doing business as Alan E. Gorenberg MD.

Where is Alan E. Gorenberg MD, Inc. located?

Alan E. Gorenberg MD, Inc. is located at 8506 E Chapman Ave, Orange, CA 92869. The listed phone number is (714) 633-4666.

What is Alan E. Gorenberg MD, Inc.'s specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Alan E. Gorenberg MD, Inc. enrolled in Medicare?

Yes. Alan E. Gorenberg MD, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alan E. Gorenberg MD, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Allergy/Immunology, reassign their Medicare billing to Alan E. Gorenberg 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. Of these, 1 practice 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 Alan E. Gorenberg MD, Inc. was last updated on February 12, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.