JONATHAN D OU MD INC
NPI 1497199772
Internal Medicine in Diamond Bar, CA

Q: What is Jonathan D Ou MD Inc's NPI number?

The NPI number for Jonathan D Ou MD Inc is 1497199772. It was assigned to this organization in the NPPES registry on April 17, 2013.

Q: What is Jonathan D Ou MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since April 17, 2013CLIA 05D2074367 · Waiver

2707 S DIAMOND BAR BLVD, SUITE 104, DIAMOND BAR, CA 91765(909) 594-8331 Get Directions Write a Review

NPPES record last updated: April 17, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Jonathan D Ou Md Inc NPPES

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

JONATHAN D OU MD INC (NPI 1497199772) is a healthcare organization registered as an internal medicine in Diamond Bar, California and active in the NPI registry since April 2013. The organization holds a CLIA Waiver certificate valid through March 6, 2028 and lists Jonathan D. Ou, Owner/president, as its authorized official.

NPPES Registry Identity

NPI1497199772

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameJONATHAN D OU MD INC

Location Address2707 S DIAMOND BAR BLVD, SUITE 104Diamond Bar, CA 91765-3500

Mailing Address2707 S Diamond Bar Blvd, Suite 104Diamond Bar, CA 91765-3500 · (909) 594-8331

Phone(909) 594-8331

Organization SubpartNo

Authorized OfficialJonathan D. OuOwner/president · (909) 670-7880

Enumeration DateApril 17, 2013

✔ NPI 1497199772 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A113176

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPediatricsTaxonomy 208000000X · License A113176 (CA)

2707 S DIAMOND BAR BLVD, Diamond Bar, CA 91765

Open in Google Maps ↗

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 of Waiver 05D2074367

Jonathan Ou, MD · Diamond Bar, CA

Active · expires Mar 6, 2028

CLIA Number05D2074367

Laboratory TypePhysician Office

Certificate Effective DateMarch 7, 2026

Certificate Expiration DateMarch 6, 2028

Laboratory DirectorJonathan Ou, MD

Laboratory Phone(909) 594-8331

Laboratory LocationJonathan Ou, MD2707 S Diamond Bar Blvd Ste 104, Diamond Bar, CA 91765

CLIA data matches this NPI record on: Address Phone

This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 6

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

KAY K. YOO DENTAL CORPORATION

Dentist (General Practice)

2707 S DIAMOND BAR BLVD, SUITE 201
DIAMOND BAR, CA 91765

Los Angeles County (909) 598-7225

KAY KYUNGHWA YOO D.D.S.

Dentist (General Practice)

2707 S DIAMOND BAR BLVD, SUITE 201
DIAMOND BAR, CA 91765

Los Angeles County (909) 598-7225

KATHY OU PHARM.D

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

2707 S DIAMOND BAR BLVD, SUITE 104
DIAMOND BAR, CA 91765

Los Angeles County (909) 594-8331

HOI CHEUNG MD INC

Family Medicine

2707 S DIAMOND BAR BLVD, STE 104
DIAMOND BAR, CA 91765

Los Angeles County (626) 300-0885

JOHN FONMIN MD

Family Medicine

2707 S DIAMOND BAR BLVD, #104
DIAMOND BAR, CA 91765

Los Angeles County (909) 594-8331

MR. JONG HO PARK LAC.

Acupuncturist

2707 S DIAMOND BAR BLVD, SUITE 205
DIAMOND BAR, CA 91765

Los Angeles County (909) 598-8682

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 Jonathan D Ou MD Inc's NPI number?

The NPI number for Jonathan D Ou MD Inc is 1497199772. It was assigned to this organization in the NPPES registry on April 17, 2013.

Where is Jonathan D Ou MD Inc located?

Jonathan D Ou MD Inc is located at 2707 S Diamond Bar Blvd Suite 104, Diamond Bar, CA 91765. The listed phone number is (909) 594-8331.

What is Jonathan D Ou MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does Jonathan D Ou MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2074367) is associated with this NPI, valid through March 6, 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 Jonathan D Ou MD Inc was last updated on April 17, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.