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Dr. Marco James Tomassi , MD

Surgery β€’ Los Angeles, CA

Active NPI 1710144829 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

1441 Eastlake Ave, Suite 7418
Los Angeles, CA 900890112

Call 3238653892 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1441 Eastlake Ave
Suite 7418

Los Angeles, CA 900890112

Telephone 3238653892
Fax 3238653885
Organization at the Same NPPES Address or Phone
Usc Radiation Oncology Associates, Inc. Facility NPI 1609926591

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Southern California Permanente Medical Group. See the list

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Medical School

New York Medical College

Graduation Year

2003

30-day fills

142 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$1,044 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $65.14 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

23 years (graduated 2003)

CMS Doctors and Clinicians data list 2003 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

NPI first issued

2008

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Tomassi has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Tomassi as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Los Angeles and California

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 90% of clinicians listed under Surgery in Los Angeles, CA (2024, 84 clinicians with data). Median for this group: 49. Middle half: 21 to 88.

More Part D prescriptions than 80% of clinicians listed under Surgery in California (2024, 1,324 clinicians with data). Median for this group: 54. Middle half: 26 to 102.

Part D drug cost

A higher Part D drug cost than 70% of clinicians listed under Surgery in Los Angeles, CA (2024, 84 clinicians with data). Median for this group: $337. Middle half: $85 to $1,052.

A higher Part D drug cost than 70% of clinicians listed under Surgery in California (2024, 1,324 clinicians with data). Median for this group: $345. Middle half: $125 to $1,120.

258 active clinicians are listed under Surgery with a practice address in Los Angeles, CA (3,129 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Los Angeles

14% of these 258 clinicians have the CMS telehealth indicator.

53.5% of these 258 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $65.14.

Manufacturer Payment Nature Product Type Amount ($)
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
β€” General $65.14

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Tramadol Hcl Tramadol Hcl 47 235 $294.67 44
Ibuprofen Ibuprofen 38 374 $297.81 37
Gabapentin Gabapentin 20 370 $166.32 19
Metronidazole Metronidazole 18 21 $99.72 18
Neomycin Sulfate Neomycin Sulfate 18 21 $185.40 18

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2021-12-06
Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

License # reported to NPPES CA A103631

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - GENERAL SURGERY

Medicare Enrollment ID

I20090602000102

Enrollment State Jurisdiction

CA

PECOS Control ID

2860541455

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Southern California Permanente Medical Group

4647 Zion Ave, San Diego, CA 921202507

Phone: 6195285000

Southern California Permanente Medical Group

9455 Clairemont Mesa Blvd, San Diego, CA 921231297

Phone: 8585731504

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Dr. Mark Agulnik , MD

Internal Medicine - Medical Oncology

NPI 1164448734

Doctor of Medicine (M.D.)

Sandra Algaze

Internal Medicine - Medical Oncology

NPI 1861886707
Cherry Au

Internal Medicine - Hematology & Oncology

NPI 1346828076
Dr. Leslie Ballas , MD

Radiology - Radiation Oncology

NPI 1235388901

Doctor of Medicine (M.D.)

Dr. Afsaneh Barzi , MD

Internal Medicine - Medical Oncology

NPI 1265480412

Doctor of Medicine (M.D.)

Keera Bhandari , PA-C, MA

Physician Assistant

NPI 1700208527

Physician Assistant (Certified), Master of Arts

Career & Practice History

NPI enumerated May 18, 2008.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.

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NPI Administrative Meta

NPI Number: 1710144829
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 18, 2008
Last Update: December 06, 2021
Sole Proprietor: Yes

Other Surgery Specialists in Los Angeles

All Surgery Specialists in Los Angeles

Mailing Address

1441 Eastlake Ave, Suite 7418

Los Angeles, CA 900890112

Phone: 3238653892

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.