MR. SANG YONG JI M.D.
NPI 1538354402
Internal Medicine - Clinical Cardiac Electrophysiology in Torrance, CA

Q: What is Sang Yong Ji's NPI number?

The NPI number for Sang Yong Ji is 1538354402. It was assigned to this individual provider in the NPPES registry on September 13, 2007.

Q: What is Sang Yong Ji's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Q: When was this NPI record last updated?

The NPPES record for Sang Yong Ji was last updated on January 27, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since September 13, 2007PECOS EnrolledAccepts Medicare Assignment

2841 LOMITA BLVD, SUITE 100, TORRANCE, CA 90505(310) 257-0508(310) 325-8109 Get Directions Write a Review

NPPES record last updated: January 27, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Mr. Sang Yong Ji M.d. NPPES

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

MR. SANG YONG JI M.D. (NPI 1538354402) is an individual clinical cardiac electrophysiology provider in Torrance, California, licensed in California (A113526) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1538354402

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameMR. SANG YONG JICredential: M.D.

Location Address2841 LOMITA BLVD, SUITE 100Torrance, CA 90505-5116

Mailing Address1360 W 6th St, Suite 200San Pedro, CA 90732-3514 · (310) 547-9922 · Fax (310) 781-1425

Phone(310) 257-0508

Fax(310) 325-8109

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateSeptember 13, 2007

Last NPPES UpdateJanuary 27, 2015

✔ NPI 1538354402 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RC0001X

License✔ Licensed in CA · A113526

Definition

A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

2841 LOMITA BLVD, Torrance, CA 90505

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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

Mr. Sang Yong Ji M.d. 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 ID5092961375

PECOS Enrollment IDI20130725000400

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

Medicare enrollment records show Sang Yong Ji reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cor Healthcare Medical Associates

Same address

Internal Medicine

2841 LOMITA BLVD., SUITE 100
Torrance, CA 90505

Reassigned Medicare billing, California enrollment
27 clinicians in this Medicare group

NPI 1699864215 (310) 257-0508

Torrance Memorial Medical Center

0.4 mi

Diagnostic Radiology

3330 LOMITA BLVD
Torrance, CA 90505

Reassigned Medicare billing, California enrollment
106 clinicians in this Medicare group

NPI 1477502797 (310) 325-9110

Torrance Health Association Inc

0.5 mi

Family Medicine

3333 SKYPARK DR, SUITE 100
Torrance, CA 90505

Reassigned Medicare billing, California enrollment
388 clinicians in this Medicare group

NPI 1083903124 (310) 784-6300

Southern California Hospitalist Network Medical Group Inc

26 mi

Internal Medicine

625 THE CITY DR S STE 320
Orange, CA 92868

Reassigned Medicare billing, California enrollment
187 clinicians in this Medicare group

NPI 1790880458 (714) 202-2330

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 33

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.

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

583 services179 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.

504 services367 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

482 services441 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

473 services34 patients

Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days 93297

This service involves remotely monitoring your heart and blood vessel implant system for up to 30 days. Using advanced technology, healthcare professionals can track the device's performance and your health status, ensuring the system is working optimally for your needs.

386 services52 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

351 services36 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

291 services31 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295

This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.

185 services56 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

173 services135 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

160 services137 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

153 services17 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

140 services140 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

135 services27 patients

Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458

This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.

125 services18 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

124 services123 patients

Anticoagulant management of patient taking warfarin 93793

Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.

88 services24 patients

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.

83 services66 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.

59 services59 patients

Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes 99451

This service involves a consulting physician assessing your health condition via a phone or internet interaction. The doctor will spend at least 5 minutes discussing your health concerns. Afterwards, a written report summarizing the findings and recommendations will be provided for your reference.

59 services49 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.

57 services57 patients

Programming of single lead pacemaker system 93279

Programming of a single lead pacemaker system involves adjusting the pacemaker's settings to suit your heart's unique needs. This is done using a special device that communicates with the pacemaker, ensuring it helps your heart beat at an optimal rate.

49 services41 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.

46 services34 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

33 services23 patients

Programming of dual lead implantable defibrillator system 93283

Programming of a dual lead implantable defibrillator system involves adjusting settings on a device implanted in your chest. This device monitors your heart rhythm and delivers electrical pulses to correct irregular heartbeats, helping maintain a healthy heart rhythm.

29 services24 patients

Programming of multiple lead implantable defibrillator system 93284

Programming of a multiple lead implantable defibrillator system involves adjusting settings on your implanted device to help control irregular heart rhythms. The process is non-invasive and helps ensure optimal device performance for maintaining heart health.

29 services23 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

26 services26 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

24 services16 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

16 services16 patients

Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation 93656

This is a procedure to treat atrial fibrillation, a condition causing irregular heartbeats. It involves a detailed heart evaluation using electrophysiology. A catheter is then used to destroy the problematic area causing the issue. Specifically, isolation of the pulmonary vein is done to regulate the heartbeat.

15 services15 patients

Insertion of pacemaker and upper and lower heart chamber electrode 33208

A pacemaker insertion is a procedure where a small device, called a pacemaker, is implanted under your skin. This device uses electrical pulses to prompt the heart to beat at a normal rate. Electrodes are placed in the upper and lower chambers of your heart to help regulate your heartbeat.

14 services14 patients

Removal and replacement of dual lead permanent pacemaker 33228

This procedure involves removing an old dual lead pacemaker and replacing it with a new one. A pacemaker helps regulate your heart's rhythm. The dual lead model has two wires connecting to your heart to improve its electrical signaling. The replacement is done under local anesthesia.

12 services12 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

12 services12 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90505 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.

SUNNY MELENDEZ MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

2841 LOMITA BLVD, SUITE 205
TORRANCE, CA 90505

Los Angeles County (310) 542-7733

EROL M KOSAR MD

Internal Medicine (Clinical Cardiac Electrophysiology)

2841 LOMITA BLVD, SUITE 100
TORRANCE, CA 90505

Los Angeles County (310) 257-0508

MR. GENE C KIM M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

2841 LOMITA BLVD, STE. 100
TORRANCE, CA 90505

Los Angeles County (310) 257-0508

DR. MATTHEW PHILLIP OSTROM M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

2841 LOMITA BLVD, SUITE 100
TORRANCE, CA 90505

Los Angeles County (310) 257-0508

MR. HOWARD H ABRAMS M.D.

Internal Medicine (Cardiovascular Disease)

2841 LOMITA BLVD, STE. 100
TORRANCE, CA 90505

Los Angeles County (310) 257-0508

MR. RAY MICHAEL WYMAN M.D.

Internal Medicine (Interventional Cardiology)

2841 LOMITA BLVD, STE. 100
TORRANCE, CA 90505

Los Angeles County (310) 257-0508

MARK LURIE M.D.

Internal Medicine (Cardiovascular Disease)

2841 LOMITA BLVD, SUITE 235
TORRANCE, CA 90505

Los Angeles County (310) 517-8950

DR. DAVID MARSHALL BLOOM M.D.

Internal Medicine (Nephrology)

2841 LOMITA BLVD, SUITE 215
TORRANCE, CA 90505

Los Angeles County (310) 379-2860

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 Sang Yong Ji's NPI number?

The NPI number for Sang Yong Ji is 1538354402. It was assigned to this individual provider in the NPPES registry on September 13, 2007.

Where is Sang Yong Ji located?

Sang Yong Ji practices at 2841 Lomita Blvd Suite 100, Torrance, CA 90505. The listed phone number is (310) 257-0508.

What is Sang Yong Ji's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Sang Yong Ji enrolled in Medicare?

Yes. Sang Yong Ji 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 Sang Yong Ji's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sang Yong Ji reassigns Medicare benefits to 4 organizations: Cor Healthcare Medical Associates (Torrance, CA), Torrance Memorial Medical Center (Torrance, CA), Torrance Health Association Inc (Torrance, CA) and Southern California Hospitalist Network Medical Group Inc (Orange, 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 Sang Yong Ji's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sang Yong Ji was last updated on January 27, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.