1. Home
  2. Directory
  3. California
  4. Harbor City
  5. Speech Language Pathologist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOANN HYUNGJOO KO
NPI 1346710555
Speech-Language Pathologist in Harbor City, CA

Active since November 30, 2018
25825 VERMONT AVE, HARBOR CITY, CA 90710(833) 574-2273 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 20, 2025, Nov 30, 2018 (2 updates tracked since 2018).

About Joann Hyungjoo Ko NPPES

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

JOANN HYUNGJOO KO (NPI 1346710555) is an individual speech-language pathologist provider in Harbor City, California, licensed in California (32961) and active in the NPI registry since November 2018. She maintains a secondary practice location in Long Beach and is a graduate of Other (2020).

NPPES Registry Identity

NPI1346710555
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameJOANN HYUNGJOO KO
Location Address25825 VERMONT AVEHarbor City, CA 90710-3518
Mailing Address1526 W 5th StSan Pedro, CA 90732-3418 · (951) 897-8111
Phone(833) 574-2273
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateNovember 30, 2018
Last NPPES UpdateJune 22, 20262 updates tracked since enumeration
NPPES CertifiedJune 22, 2026
✔ NPI 1346710555 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
License✔ Licensed in CA · 32961
Definition
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
25825 VERMONT AVE, Harbor City, CA 90710
Open in Google Maps ↗

Secondary Practice Location 1

Location 12801 Atlantic AveLong Beach, CA 90806-1701 · Phone (562) 933-2000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joann Hyungjoo Ko is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6204314164
PECOS Enrollment IDI20260202000823

Other Providers at the Same Location NPPES 20

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

SEAN KOH PHARM.D.
Pharmacist
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 325-5111
ALYSSA QUAN PHARM.D.
Pharmacist
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 517-2238
JOYHAN JAY SUNG RRT-NPS
Respiratory Therapist, Registered (Neonatal/Pediatrics)
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 517-2648
RANDEL R. KING MD
Internal Medicine (Pulmonary Disease)
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 325-5111
TIM TAKESHI SUGIYAMA
Pharmacist
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 517-2239
RYOKEI K. IMAI MD
Internal Medicine
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 325-5111
JENNIFER WING-YUN LAM MD
Internal Medicine
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 325-5111
CHRISTOPHER LOLACHI MD
Otolaryngology (Plastic Surgery within the Head & Neck)
25825 VERMONT AVE
HARBOR CITY, CA 90710
Los Angeles County (310) 325-5111

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 Joann Ko's NPI number?

The NPI number for Joann Ko is 1346710555. It was assigned to this individual provider in the NPPES registry on November 30, 2018.

Where is Joann Ko located?

Joann Ko practices at 25825 Vermont Ave, Harbor City, CA 90710. The listed phone number is (833) 574-2273.

What is Joann Ko's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Is Joann Ko enrolled in Medicare?

Yes. Joann Ko is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Joann Ko was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 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.