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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RYAN KOBAYASHI MD, MS
NPI 1215449830
Pediatrics - Pediatric Cardiology in Los Angeles, CA

Active since November 05, 2017PECOS EnrolledAccepts Medicare Assignment
200 UCLA MEDICAL PLZ STE 330, LOS ANGELES, CA 90095(310) 267-7667 Get Directions Write a Review

NPPES record last updated: October 9, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 9, 2026, Mar 1, 2022, Dec 15, 2021 and 1 more (4 updates tracked since 2017).

About Dr. Ryan Kobayashi Md, Ms NPPES

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

DR. RYAN KOBAYASHI MD, MS (NPI 1215449830) is an individual pediatric cardiology provider in Los Angeles, California, licensed in California (A146189) and active in the NPI registry since November 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1215449830
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NameDR. RYAN KOBAYASHICredential: MD, MS
Location Address200 UCLA MEDICAL PLZ STE 330Los Angeles, CA 90095-8344
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631
Phone(310) 267-7667
Sole ProprietorYes
Medical School CMSOtherGraduated 2015
Enumeration DateNovember 5, 2017
Last NPPES UpdateOctober 9, 20264 updates tracked since enumeration
NPPES CertifiedOctober 9, 2026
✔ NPI 1215449830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
Licenses✔ Licensed in CA · A146189✔ Licensed in MA · 274639
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
Also ListedInternal Medicine · Advanced Heart Failure and Transplant CardiologyTaxonomy 207RA0001X · License A146189 (CA)
Also ListedPediatricsTaxonomy 208000000X · License A146289 (CA)
200 UCLA MEDICAL PLZ STE 330, Los Angeles, CA 90095
Open in Google Maps ↗

Secondary Practice Location 1

Location 1300 Longwood AveBoston, MA 02115-5724 · Phone (617) 355-6000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ryan Kobayashi Md, Ms is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476947417
PECOS Enrollment IDI20220308001494
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Ryan Kobayashi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Boston Childrens Heart Foundation Inc
2,604 mi
Pediatric Cardiology
300 LONGWOOD AVE
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 220 clinicians in this Medicare group
NPI 1982680922 (617) 355-6793

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 13

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

GRETA PASCALE MAARLEVELD NP
Nurse Practitioner (Pediatrics)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667
ARAVINTH KARUNANANDAA MD
Pediatrics
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667
OSMAN OSSAMA RADI M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667
DR. DANIEL STEVEN LEVI M.D.
Pediatrics (Pediatric Cardiology)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667
DR. KOYELLE PAPNEJA MD
Pediatrics (Pediatric Cardiology)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 825-0867
CLAIRE AMANDA NEWLON MD
Pediatrics (Pediatric Cardiology)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 301-8732
ANGELA LYNN PATEL CRNP-AC
Nurse Practitioner
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667
JOOHA PARK
Nurse Practitioner (Family)
200 UCLA MEDICAL PLZ STE 330
LOS ANGELES, CA 90095
Los Angeles County (310) 267-7667

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 Kobayashi's NPI number?

The NPI number for Ryan Kobayashi is 1215449830. It was assigned to this individual provider in the NPPES registry on November 5, 2017.

Where is Ryan Kobayashi located?

Ryan Kobayashi practices at 200 Ucla Medical Plz Ste 330, Los Angeles, CA 90095. The listed phone number is (310) 267-7667.

What is Ryan Kobayashi's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Ryan Kobayashi enrolled in Medicare?

Yes. Ryan Kobayashi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Ryan Kobayashi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Kobayashi reassigns Medicare benefits to Boston Childrens Heart Foundation Inc (Boston, MA). The 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 Ryan Kobayashi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ryan Kobayashi accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Ryan Kobayashi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Ryan Kobayashi was last updated on October 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.