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RYAN H JOO, M.D. INC.
NPI 1801248067
Internal Medicine - Infectious Disease in Pasadena, CA

Active since July 11, 2016
960 E GREEN ST STE 105, PASADENA, CA 91106(626) 304-0782(626) 310-0552 Get Directions Write a Review

NPPES record last updated: October 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 27, 2023, Jan 23, 2023, Jul 11, 2016 (3 updates tracked since 2016).

About Ryan H Joo, M.d. Inc. NPPES

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

RYAN H JOO, M.D. INC. (NPI 1801248067) is a healthcare organization registered as an infectious disease in Pasadena, California and active in the NPI registry since July 2016. The organization lists Ryan H Joo, Ceo, as its authorized official.

NPPES Registry Identity

NPI1801248067
Entity TypeOrganization
Primary Taxonomy207RI0200X
Legal Business NameRYAN H JOO, M.D. INC.
Location Address960 E GREEN ST STE 105Pasadena, CA 91106-2443
Mailing AddressPo Box 1449Brea, CA 92822-1449 · (714) 996-1633
Phone(626) 304-0782
Fax(626) 310-0552
Organization SubpartNo
Authorized OfficialRyan H JooCeo · (323) 821-2796
Enumeration DateJuly 11, 2016
Last NPPES UpdateOctober 27, 20233 updates tracked since enumeration
NPPES CertifiedOctober 27, 2023
✔ NPI 1801248067 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A114398
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
960 E GREEN ST STE 105, Pasadena, CA 91106
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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)

Ryan H Joo, M.d. 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 Ryan H Joo, M.D. Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Ryan Joo, M.D.
Infectious Disease
NPI 1639301922
960 E GREEN ST STE 105
Pasadena, CA 91106
(626) 304-0782
✔ PECOS✔ Accepts MedicareSame address

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 Ryan H Joo, M.D. Inc.'s NPI number?

The NPI number for Ryan H Joo, M.D. Inc. is 1801248067. It was assigned to this organization in the NPPES registry on July 11, 2016.

Where is Ryan H Joo, M.D. Inc. located?

Ryan H Joo, M.D. Inc. is located at 960 E Green St Ste 105, Pasadena, CA 91106. The listed phone number is (626) 304-0782.

What is Ryan H Joo, M.D. Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Ryan H Joo, M.D. Inc. enrolled in Medicare?

Yes. Ryan H Joo, M.D. Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ryan H Joo, M.D. Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Infectious Disease) reassigns their Medicare billing to Ryan H Joo, M.D. 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.

When was this NPI record last updated?

The NPPES record for Ryan H Joo, M.D. Inc. was last updated on October 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.