DR. VIVIAN MO M.D.
NPI 1639196363
Internal Medicine - Cardiovascular Disease in Los Angeles, CA

Q: What is Vivian Mo's NPI number?

The NPI number for Vivian Mo is 1639196363. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Q: What is Vivian Mo'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 Vivian Mo was last updated on September 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 17, 2006PECOS EnrolledAccepts Medicare Assignment

1520 SAN PABLO ST, SUITE 1000, LOS ANGELES, CA 90033(323) 442-6130 Get Directions Write a Review

NPPES record last updated: September 11, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 30, 2020, Aug 21, 2020 (2 updates tracked since 2020).

On this page

About Dr. Vivian Mo M.d. NPPES

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

DR. VIVIAN MO M.D. (NPI 1639196363) is an individual cardiovascular disease provider in Los Angeles, California, licensed in California (A100505) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with The Miriam Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1639196363

Entity TypeIndividualFemale

Primary Taxonomy207RC0000X

Provider Legal NameDR. VIVIAN MOCredential: M.D.

Location Address1520 SAN PABLO ST, SUITE 1000Los Angeles, CA 90033-5310

Mailing Address1510 San Pablo St Ste 322Los Angeles, CA 90033-5305 · (323) 442-6102

Phone(323) 442-6130

Sole ProprietorYes

Medical School CMSOtherGraduated 2001

Enumeration DateJuly 17, 2006

Last NPPES UpdateSeptember 11, 20232 updates tracked since enumeration

NPPES CertifiedSeptember 8, 2023

✔ NPI 1639196363 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in CA · A100505✔ Licensed in RI · MD19224✔ Licensed in TX · L6530

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 ListedPersonal Emergency Response AttendantTaxonomy 146D00000X · License L6530 (TX)

1520 SAN PABLO ST, Los Angeles, CA 90033

Open in Google Maps ↗

Secondary Practice Locations 3

Location 1950 Warren Ave Ste 201East Providence, RI 02914-1432 · Phone (401) 606-1004

Location 2593 Eddy StProvidence, RI 02903-4923 · Phone (401) 444-5891

Location 3593 Eddy Street, George Bldg., 1st FloorProvidence, RI 02903-4923 · Phone (401) 606-1004

Other Identifiers 3

OtherGR0100430CA · Group Medical

OtherW18762CA · Group Medicare

Other1902846306CA · Group Npi

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

Dr. Vivian Mo 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 ID5294823191

PECOS Enrollment IDI20071109000499, I20230921002612

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 Vivian Mo reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Usc Care Medical Group, Inc

Same address

General Practice

1520 SAN PABLO ST
Los Angeles, CA 90033

Reassigned Medicare billing, California enrollment
2,445 clinicians in this Medicare group

NPI 1902846306 (323) 442-5955

Heartbeat Medical Group Of California, P.C.

3.4 mi

Health Service

818 W 7TH ST STE 930
Los Angeles, CA 90017

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

NPI 1699439232 (646) 586-9908

Leflore County Hospital Authority

1,344 mi

Family Medicine

104 S EAST BLVD
Poteau, OK 74953

Reassigned Medicare billing, Oklahoma enrollment
26 clinicians in this Medicare group

NPI 1578026571 (918) 635-3576

Lifespan Physician Group, Inc.

2,570 mi

Surgery

2 DUDLEY ST STE 470
Providence, RI 02905

Reassigned Medicare billing, Rhode Island enrollment
1,372 clinicians in this Medicare group

NPI 1174484216 (401) 272-1800

Rhode Island Hospital

2,578 mi

Advanced Heart Failure and Transplant Cardiology

593 EDDY ST, GEORGE BLDG., 1ST FLOOR
Providence, RI 02903

Reassigned Medicare billing, Rhode Island enrollment
67 clinicians in this Medicare group

NPI 1962844795 (401) 606-1004

The Miriam Hospital

2,579 mi

Cardiovascular Disease

208 COLLYER ST, SUITE 100
Providence, RI 02904

Reassigned Medicare billing, Rhode Island enrollment
106 clinicians in this Medicare group

NPI 1851677470 (401) 793-7191

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 27

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.

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.

3,701 services2,511 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.

761 services731 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.

149 services84 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

141 services118 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

127 services109 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

117 services111 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

104 services98 patients

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

96 services95 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

78 services50 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.

78 services43 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.

45 services45 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.

35 services35 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.

35 services35 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

29 services29 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

29 services29 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.

27 services24 patients

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

23 services16 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

21 services21 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

19 services17 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

17 services17 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

15 services15 patients

Injection, perflutren lipid microspheres, per ml Q9957

Perflutren lipid microspheres injection, per ml, is a diagnostic tool used to enhance ultrasound images. It contains tiny gas-filled bubbles that improve the clarity of the images, aiding in a more accurate diagnosis.

15 services15 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

14 services14 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.

13 services13 patients

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

12 services12 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.

11 services11 patients

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

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

The Miriam Hospital

Acute Care Hospitals · Providence, RI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number410012

Location164 Summit AvenueProvidence, RI 02906 · Providence County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90033 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 20

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

DR. CAROLINE HWANG M.D.

Internal Medicine (Gastroenterology)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

GISELLE MARIA PETZINGER M.D.

Psychiatry & Neurology (Neurology)

1520 SAN PABLO ST, SUITE 3000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5710

LIGAYA CASTILLO

Nurse Practitioner

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

ERICA ZOE SHOEMAKER MD

Psychiatry & Neurology (Psychiatry)

1520 SAN PABLO ST, STE 1652
LOS ANGELES, CA 90033

Los Angeles County (323) 442-6000

DR. MICHELE TORTORA PATO M.D.

Psychiatry & Neurology (Psychiatry)

1520 SAN PABLO ST, STE1652
LOS ANGELES, CA 90033

Los Angeles County (323) 442-6000

DR. EDY E SOFFER M.D.

Internal Medicine (Gastroenterology)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

DR. TRACY DEBRA LAWRENCE M.D.

Internal Medicine (Cardiovascular Disease)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

CAROLYN L. KALOOSTIAN MD

Family Medicine (Geriatric Medicine)

1520 SAN PABLO ST, 1ST FLOOR
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5900

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 Vivian Mo's NPI number?

The NPI number for Vivian Mo is 1639196363. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Vivian Mo located?

Vivian Mo practices at 1520 San Pablo St Suite 1000, Los Angeles, CA 90033. The listed phone number is (323) 442-6130.

What is Vivian Mo's specialty?

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

Is Vivian Mo enrolled in Medicare?

Yes. Vivian Mo 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 Vivian Mo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Mo reassigns Medicare benefits to 6 organizations: Usc Care Medical Group, Inc (Los Angeles, CA), Heartbeat Medical Group Of California, P.C. (Los Angeles, CA), Leflore County Hospital Authority (Poteau, OK), Lifespan Physician Group, Inc. (Providence, RI), Rhode Island Hospital (Providence, RI) and 1 more organization, listed in the Medicare section above. 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 Vivian Mo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Vivian Mo affiliated with any hospitals?

According to CMS data, Vivian Mo is affiliated with The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for Vivian Mo was last updated on September 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.