DR. INYONG HWANG
NPI 1528346111
Internal Medicine - Cardiovascular Disease in Los Angeles, CA

Q: What is Inyong Hwang's NPI number?

The NPI number for Inyong Hwang is 1528346111. It was assigned to this individual provider in the NPPES registry on July 30, 2011.

Q: What is Inyong Hwang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Inyong Hwang was last updated on February 15, 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.

Active since July 30, 2011PECOS Enrolled

3130 W OLYMPIC BLVD STE 250, LOS ANGELES, CA 90006(213) 528-1111(213) 528-2222 Get Directions Write a Review

NPPES record last updated: February 15, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 31, 2018, Mar 17, 2018, Jun 12, 2017 (3 updates tracked since 2017).

On this page

About Dr. Inyong Hwang NPPES

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

DR. INYONG HWANG (NPI 1528346111) is an individual cardiovascular disease provider in Los Angeles, California, licensed in California (A127657) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1528346111

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. INYONG HWANG

Location Address3130 W OLYMPIC BLVD STE 250Los Angeles, CA 90006-2491

Mailing Address3130 W Olympic Blvd Ste 250Los Angeles, CA 90006-2491 · (213) 528-1111

Phone(213) 528-1111

Fax(213) 528-2222

Sole ProprietorYes

Medical School CMSOtherGraduated 2008

Enumeration DateJuly 30, 2011

Last NPPES UpdateFebruary 15, 20243 updates tracked since enumeration

NPPES CertifiedFebruary 15, 2024

✔ NPI 1528346111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in CA · A127657

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License A127657 (CA)

Also ListedNuclear Medicine · Nuclear CardiologyTaxonomy 207UN0901X · License A127657 (CA)

3130 W OLYMPIC BLVD STE 250, Los Angeles, CA 90006

Open in Google Maps ↗

Secondary Practice Locations 2

Location 11995 W Malvern Ave Ste AFullerton, CA 92833-5772 · Phone (714) 760-9988 · Fax (213) 528-2222

Location 2University Of Tennessee 910 Madison Ave, Suite 1031Memphis, TN 38163-0001 · Phone (901) 448-5814

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Inyong Hwang is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6709025463

PECOS Enrollment IDI20170714002865

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 Inyong Hwang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Premier Cardiology And Vascular Institute Inc

Same address

Cardiovascular Disease

3130 W OLYMPIC BLVD STE 250
Los Angeles, CA 90006

Reassigned Medicare billing, California enrollment

NPI 1164153193 (213) 528-1111

Oc Premier Cardiology And Vascular Institute Inc

21 mi

Cardiovascular Disease

5797 BEACH BLVD
Buena Park, CA 90621

Reassigned Medicare billing, California enrollment

NPI 1699482109 (714) 760-9988

Oak Hills Medical Corporation

100 mi

Vascular Surgery

1500 HAGGIN OAKS BLVD, 202
Bakersfield, CA 93311

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

NPI 1790230761 (661) 654-8346

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 16

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 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.

1,515 services454 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.

355 services346 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

304 services270 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

292 services288 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.

222 services222 patients

Electrocardiogram (ecg) up to 30 days continuous with transmission of patient triggered events with review and report by health care professional 93229

An Electrocardiogram (ECG) is a test that records your heart's electrical activity for up to 30 days. You trigger a transmission if you feel symptoms, which is then reviewed by a healthcare professional. The report helps diagnose heart conditions.

151 services146 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

99 services99 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

98 services97 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

91 services59 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.

90 services74 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

52 services52 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional 93228

An Electrocardiogram (ECG) is a non-invasive test that records the electrical signals in your heart. For up to 30 days, a small device will continuously monitor your heart's activity. A healthcare professional will then review the data and provide a report on your heart's function.

48 services48 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

47 services46 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

26 services26 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system 93288

An evaluation of a pacemaker system examines how well your heart device is working. Single, dual, multiple lead, or leadless refers to the wires that deliver electrical pulses from the pacemaker to your heart. This check ensures your heart is receiving the right amount of support from the device.

24 services14 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90006 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

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

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

PREMIER CARDIOLOGY AND VASCULAR INSTITUTE INC

Internal Medicine (Cardiovascular Disease)

3130 W OLYMPIC BLVD STE 250
LOS ANGELES, CA 90006

Los Angeles County (213) 528-1111

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 Inyong Hwang's NPI number?

The NPI number for Inyong Hwang is 1528346111. It was assigned to this individual provider in the NPPES registry on July 30, 2011.

Where is Inyong Hwang located?

Inyong Hwang practices at 3130 W Olympic Blvd Ste 250, Los Angeles, CA 90006. The listed phone number is (213) 528-1111.

What is Inyong Hwang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Inyong Hwang enrolled in Medicare?

Yes. Inyong Hwang is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Inyong Hwang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Inyong Hwang reassigns Medicare benefits to 3 organizations: Premier Cardiology And Vascular Institute Inc (Los Angeles, CA), Oc Premier Cardiology And Vascular Institute Inc (Buena Park, CA) and Oak Hills Medical Corporation (Bakersfield, 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 Inyong Hwang'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 Inyong Hwang was last updated on February 15, 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.