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

JOHN GWEUN
NPI 1205521366
Hospitalist in West Hollywood, CA

Q: What is John Gweun's NPI number?

The NPI number for John Gweun is 1205521366. It was assigned to this individual provider in the NPPES registry on April 5, 2023.

Q: What is John Gweun's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for John Gweun was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.

Active since April 05, 2023PECOS Enrolled

8700 BEVERLY BLVD # B220, WEST HOLLYWOOD, CA 90048(310) 423-5252 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 16, 2026, Apr 5, 2023 (2 updates tracked since 2023).

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About John Gweun NPPES

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

JOHN GWEUN (NPI 1205521366) is an individual hospitalist provider in West Hollywood, California, licensed in California (A199598) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS and maintains a secondary practice location in Sylmar.

NPPES Registry Identity

NPI1205521366

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameJOHN GWEUN

Location Address8700 BEVERLY BLVD # B220West Hollywood, CA 90048-1804

Mailing Address4140 W 190th St Fl 2Torrance, CA 90504-5513 · (310) 423-5252

Phone(310) 423-5252

Sole ProprietorNo

Enumeration DateApril 5, 2023

Last NPPES UpdateSeptember 16, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 16, 2026

✔ NPI 1205521366 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in CA · A199598

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

8700 BEVERLY BLVD # B220, West Hollywood, CA 90048

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Secondary Practice Location 1

Location 114445 Olive View DrSylmar, CA 91342-1437 · Phone (747) 210-3205

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Gweun is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90048 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ARPIT ARORA MD

Physical Medicine & Rehabilitation (Hospice and Palliative Medicine)