OPTUM
NPI 1891981502
Internal Medicine - Addiction Medicine in Tustin, CA

Q: What is Healthcare Partners Affiliates Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Active since September 18, 2007CLIA 05D0990839 · Microscopy

14591 NEWPORT AVE, TUSTIN, CA 92780(714) 442-4864 Get Directions Write a Review

NPPES record last updated: April 8, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 8, 2021, Dec 10, 2015 (2 updates tracked since 2015).

On this page

About Optum NPPES

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

OPTUM (NPI 1891981502) is a healthcare organization registered as an addiction medicine in Tustin, California and active in the NPI registry since September 2007. The organization holds a CLIA Microscopy certificate valid through September 3, 2027 and lists Rebecca D. Schaumburg, Administrative Assistant, as its authorized official.

NPPES Registry Identity

NPI1891981502

Entity TypeOrganization

Primary Taxonomy207RA0401X

Legal Business NameHEALTHCARE PARTNERS AFFILIATES MEDICAL GROUP

Location Address14591 NEWPORT AVETustin, CA 92780-6001

Mailing AddressPo Box 6400Torrance, CA 90504-0400 · (310) 525-3869 · Fax (310) 783-5581

Phone(714) 442-4864

Organization SubpartNo

Authorized OfficialRebecca D. SchaumburgAdministrative Assistant · (310) 525-3869

Enumeration DateSeptember 18, 2007

Last NPPES UpdateApril 8, 20212 updates tracked since enumeration

NPPES CertifiedApril 8, 2021

✔ NPI 1891981502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RA0401X

Definition

An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.

14591 NEWPORT AVE, Tustin, CA 92780

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Other Names 1

Doing Business AsOptum

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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 for Provider-Performed Microscopy Procedures (PPMP) 05D0990839

Healthcare Partners Affiliates Medical Group · Tustin, CA

Active · expires Sep 3, 2027

CLIA Number05D0990839

Laboratory TypePhysician Office

Certificate Effective DateSeptember 4, 2025

Certificate Expiration DateSeptember 3, 2027

Laboratory DirectorRavi Bhakta

Laboratory Phone(562) 988-7027

Laboratory LocationHealthcare Partners Affiliates Medical Group14591 Newport Ave, Tustin, CA 92780

CLIA data matches this NPI record on: Address Name

This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform 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.

CHITRA BHAKTA M.D.A PROFESSIONAL CORPORATION

Family Medicine

14591 NEWPORT AVE, SUITE 208
TUSTIN, CA 92780

Orange County (888) 906-2462

DR. HYUNG HOON LEE L.AC

Acupuncturist

14591 NEWPORT AVE, #102
TUSTIN, CA 92780

Orange County (714) 731-3881

DR. TRA THANH LE D.D.S.

Dentist (Pediatric Dentistry)

14591 NEWPORT AVE, SUITE # 108
TUSTIN, CA 92780

Orange County (714) 368-3334

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 Healthcare Partners Affiliates Medical Group's NPI number?

The NPI number for Healthcare Partners Affiliates Medical Group is 1891981502. It was assigned to this organization in the NPPES registry on September 18, 2007. The provider is doing business as Optum.

Where is Healthcare Partners Affiliates Medical Group located?

Healthcare Partners Affiliates Medical Group is located at 14591 Newport Ave, Tustin, CA 92780. The listed phone number is (714) 442-4864.

What is Healthcare Partners Affiliates Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Does Healthcare Partners Affiliates Medical Group hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0990839) is associated with this NPI, valid through September 3, 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 Healthcare Partners Affiliates Medical Group was last updated on April 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.