Vincent Lloyd Antosz, MD
Internal Medicine Physician · Arcadia, CA
Vincent Lloyd Antosz, MD is an internal medicine physician with a practice address in Arcadia, California, and NPI 1831150135, issued on Mar 28, 2006. Check the license (California A64793, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Vincent Lloyd Antosz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A64793 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 W Huntington Dr, Arcadia, CA 91007
- Phone
- (626) 795-2244
- Enumerated
- Mar 28, 2006
- Record last updated
- Dec 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20040729001556); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 300 W Huntington Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Agron, NPFamily Nurse Practitioner1538685334
- Raha Akhavan, M.D.Anesthesiology Physician1477577351
- Loren Ayres, M.D.Anatomic Pathology & Clinical Pathology Physician1184693301
- Apryl Jann Bacalso, PTPhysical Therapist1124525340
- Rahtna Banerjee, M.D.Anesthesiology Physician1033430855
- Eric Barretto, RNRegistered Nurse1043178932
Verify Vincent Lloyd Antosz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A64793Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
333 Medicare Part D claims for 151 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 23 claims were for opioids.
Most prescribed
- Cefuroxime26 claims
- Pantoprazole Sodium20 claims
- Furosemide19 claims
- Potassium Chloride17 claims
- Amoxicillin-Clavulanate Potass14 claims
- Eliquis13 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
- Healthcare Partners Affiliates Medical GroupPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vincent Lloyd Antosz among 17,696 internal medicine physician records in California
Vincent Lloyd Antosz, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
74 internal medicine physician records list a practice address in Arcadia
They are 74 of the 2,033 NPPES records with a practice address in Arcadia, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Arcadia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Phillip Cabasso, M.D.Arcadia, CA 910071609812841
- Pai-Hsiang Chen, D.OArcadia, CA 910071063405892
- Kuancheng Chen, MDArcadia, CA 910071235125790
- Eric Chwa, M.DArcadia, CA 910071962433607
- Nilar Chwa, M.DArcadia, CA 910071316978067
- Mary Jones, M.D.Arcadia, CA 910071902873805
- Fauzia Khan, MDArcadia, CA 910071326039678
- John Lee, MDArcadia, CA 910071609816917
Common questions
What is Vincent Lloyd Antosz, MD's NPI number?
Vincent Lloyd Antosz, MD's National Provider Identifier (NPI) is 1831150135, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Vincent Lloyd Antosz, MD located?
The NPPES record lists a practice address at 300 W Huntington Dr, Arcadia, CA, 91007. Phone: (626) 795-2244. Providers update this record themselves, so call before visiting.
How can I verify Vincent Lloyd Antosz, MD's license?
NPPES lists California license number A64793, 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 Vincent Lloyd Antosz, MD prescribe under Medicare Part D?
In 2024, Vincent Lloyd Antosz, MD had 333 Medicare Part D claims for 151 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.