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HYUNSEOK KIM M.D, M.P.H
NPI 1558758524
Internal Medicine - Gastroenterology in West Hollywood, CA

Active since April 17, 2015PECOS EnrolledAccepts Medicare Assignment
85.71/100
CMS Quality Rating
8900 BEVERLY BLVD STE 310, WEST HOLLYWOOD, CA 90048(310) 423-2641(310) 423-2356 Get Directions Write a Review

NPPES record last updated: April 2, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 2, 2024, Jul 28, 2023 (2 updates tracked since 2023).

About Hyunseok Kim M.d, M.p.h NPPES

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

HYUNSEOK KIM M.D, M.P.H (NPI 1558758524) is an individual gastroenterology provider in West Hollywood, California, licensed in California (A186926) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1558758524
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameHYUNSEOK KIMCredential: M.D, M.P.H
Location Address8900 BEVERLY BLVD STE 310West Hollywood, CA 90048-2438
Mailing Address4140 W 190th StTorrance, CA 90504-5513
Phone(310) 423-2641
Fax(310) 423-2356
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateApril 17, 2015
Last NPPES UpdateApril 2, 20242 updates tracked since enumeration
NPPES CertifiedApril 2, 2024
✔ NPI 1558758524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A186926
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 291954 (MA)
8900 BEVERLY BLVD STE 310, West Hollywood, CA 90048
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.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

Hyunseok Kim M.d, M.p.h 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 ID4688080039
PECOS Enrollment IDI20230810000405
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 Reassignments

3

Medicare enrollment records show Hyunseok Kim reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cedars-Sinai Medical Care Foundation
0.4 mi
Anesthesiology
8700 BEVERLY BLVD STE SB-290
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 2,118 clinicians in this Medicare group
NPI 1043826720 (310) 423-1447
Cedars-Sinai Medical Center
0.4 mi
General Acute Care Hospital
8700 BEVERLY BLVD
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 1,001 clinicians in this Medicare group
NPI 1639172372 (323) 866-8600
Sycamore Hill Hospitalist Medical Group Inc
5.6 mi
Hospitalist
1300 N VERMONT AVE
Los Angeles, CA 90027
  • Reassigned Medicare billing, California enrollment
  • 43 clinicians in this Medicare group
NPI 1588139836 (844) 474-4019

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

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
111 services73 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
64 services34 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
34 services31 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
32 services32 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
27 services25 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
22 services22 patients

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.71/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.67
Promoting Interoperability100
Improvement Activities40
Cost61.47

Other Providers at the Same Location NPPES 4

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

ALEXANDER DANIEL YUEN MD
Internal Medicine (Pulmonary Disease)
8900 BEVERLY BLVD STE 310
WEST HOLLYWOOD, CA 90048
Los Angeles County (310) 423-7249
DR. KEERTHANA SANKAR MD
Internal Medicine (Pulmonary Disease)
8900 BEVERLY BLVD STE 310
WEST HOLLYWOOD, CA 90048
Los Angeles County (310) 423-7249
DR. SINDHU CHANDRAN M.B.,B.S.
Internal Medicine (Nephrology)
8900 BEVERLY BLVD STE 310
WEST HOLLYWOOD, CA 90048
Los Angeles County (310) 423-2641
DAVID EARL COHEN MD PHD
Internal Medicine (Gastroenterology)
8900 BEVERLY BLVD STE 310
WEST HOLLYWOOD, CA 90048
Los Angeles County (310) 423-6000

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 Hyunseok Kim's NPI number?

The NPI number for Hyunseok Kim is 1558758524. It was assigned to this individual provider in the NPPES registry on April 17, 2015.

Where is Hyunseok Kim located?

Hyunseok Kim practices at 8900 Beverly Blvd Ste 310, West Hollywood, CA 90048. The listed phone number is (310) 423-2641.

What is Hyunseok Kim's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Hyunseok Kim enrolled in Medicare?

Yes. Hyunseok Kim 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 organizations bill Medicare for Hyunseok Kim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hyunseok Kim reassigns Medicare benefits to 3 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA), Cedars-Sinai Medical Center (Los Angeles, CA) and Sycamore Hill Hospitalist Medical Group Inc (Los Angeles, CA). Each 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 Hyunseok Kim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Hyunseok Kim accept?

Health plans from Blue Cross and Blue Shield of Texas list Hyunseok Kim 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 Hyunseok Kim was last updated on April 2, 2024. 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.