Marco James Tomassi, MD
Surgery Physician · Los Angeles, CA
Marco James Tomassi, MD is a surgery physician with a practice address in Los Angeles, California, and NPI 1710144829, issued on May 18, 2008. Check the license (California A103631, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marco James Tomassi
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A103631 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1441 Eastlake Ave, Los Angeles, CA 90089
- Phone
- (323) 865-3892
- Enumerated
- May 18, 2008
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (323) 865-3885
- Medicare enrollment
- Enrolled (PECOS I20090602000102); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2003
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 1441 Eastlake Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marco James Tomassi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103631Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average surgery physician in 2024
177 Medicare Part D claims for 60 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Tramadol Hcl47 claims
- Ibuprofen38 claims
- Gabapentin20 claims
- Metronidazole18 claims
- Neomycin Sulfate18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marco James Tomassi among 3,118 surgery physician records in California
Marco James Tomassi, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2003 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Los Angeles → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Vincent Cheng, M.D.Los Angeles, CA 900891073044137
- Rachel LaiLos Angeles, CA 900891124893706
- Heewon LeeLos Angeles, CA 900891457053217
- Michelle ManeshLos Angeles, CA 900891881214039
- Patrick McGillen, MDLos Angeles, CA 900891982224267
- Abigail Zamora, MDLos Angeles, CA 900891750734596
- James Atkinson, MDLos Angeles, CA 900951336162981
- Oscar Hines, MDLos Angeles, CA 900951497779581
Common questions
What is Marco James Tomassi, MD's NPI number?
Marco James Tomassi, MD's National Provider Identifier (NPI) is 1710144829, issued on May 18, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marco James Tomassi, MD located?
The NPPES record lists a practice address at 1441 Eastlake Ave, Los Angeles, CA, 90089. Phone: (323) 865-3892. Providers update this record themselves, so call before visiting.
How can I verify Marco James Tomassi, MD's license?
NPPES lists California license number A103631, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marco James Tomassi, MD prescribe under Medicare Part D?
In 2024, Marco James Tomassi, MD had 177 Medicare Part D claims for 60 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.