Tom Ryan Demeester, MD
Surgery Physician · Los Angeles, CA
Tom Ryan Demeester, MD is a surgery physician with a practice address in Los Angeles, California, and NPI 1902837289, issued on Jul 5, 2006. Check the license (California C42820, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Tom Ryan Demeester
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- C42820 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1510 San Pablo St, Los Angeles, CA 90033
- Phone
- (323) 442-5910
- Enumerated
- Jul 5, 2006
- Record last updated
- Oct 13, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (323) 442-6798
- Medicaid ID
- 00C428200 CA
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 1510 San Pablo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Noel Almani, PA-CPhysician Assistant1154734069
- Cybele Arsan, M.D.Student in an Organized Health Care Education/Training Program1568825024
- Kian Asanad, MDUrology Physician1831676055
- Alexis AvalosTechnician1275293458
- Sandra Avila, MDFamily Medicine Physician1396939575
Verify Tom Ryan Demeester in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C42820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Tom Ryan Demeester among 3,118 surgery physician records in California
Tom Ryan Demeester, 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 not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2009 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,118 in California → Every provider in Los Angeles → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Peter Crookes, MDLos Angeles, CA 900331396780631
- Saurabh Jain, M.D.,M.R.C.S.Los Angeles, CA 900331528011970
- Namir Katkhouda, MDLos Angeles, CA 900331164450714
- Simon Keushkerian, M.D.Los Angeles, CA 900331306866850
- Faisal Khan, M.D.Los Angeles, CA 900331043233885
- Stephen Lee, M.D.Los Angeles, CA 900331790987105
- John Lipham, MDLos Angeles, CA 900331639100845
- Rodney MasonLos Angeles, CA 900331851413645
Common questions
What is Tom Ryan Demeester, MD's NPI number?
Tom Ryan Demeester, MD's National Provider Identifier (NPI) is 1902837289, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tom Ryan Demeester, MD located?
The NPPES record lists a practice address at 1510 San Pablo St, Los Angeles, CA, 90033. Phone: (323) 442-5910. Providers update this record themselves, so call before visiting.
How can I verify Tom Ryan Demeester, MD's license?
NPPES lists California license number C42820, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.