Lloyd Patrick Asuncion, MD
Internal Medicine Physician · Antioch, CA
Lloyd Patrick Asuncion, MD is an internal medicine physician with a practice address in Antioch, California, and NPI 1437353034, issued on Jun 14, 2007. Check the license (California A112991, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lloyd Patrick Asuncion
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A112991 CA
BP1-0026595 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4501 Sand Creek RD, Antioch, CA 94531
- Phone
- (409) 789-1936
- Enumerated
- Jun 14, 2007
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110502000731); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4501 Sand Creek RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Veronica Arellano, RDRegistered Dietitian1740091354
- Michael AyoubPharmacist1164362448
Verify Lloyd Patrick Asuncion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% more Medicare Part D claims than the average internal medicine physician in 2024
5,293 Medicare Part D claims for 654 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 319 claims were for opioids.
Most prescribed
- Atorvastatin Calcium364 claims
- Amlodipine Besylate250 claims
- Hydrocodone-Acetaminophen215 claims
- Levothyroxine Sodium199 claims
- Lisinopril182 claims
- Hydrochlorothiazide158 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
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lloyd Patrick Asuncion among 17,696 internal medicine physician records in California
Lloyd Patrick Asuncion, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
66 internal medicine physician records list a practice address in Antioch
They are 66 of the 2,184 NPPES records with a practice address in Antioch, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Antioch → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zenen Alpuerto, MDAntioch, CA 945311548215478
- Jalal Atmar, MDAntioch, CA 945311265510846
- Kausalya Bhaskarabhatla, M.D.Antioch, CA 945311003867607
- Melissa Carucci, MDAntioch, CA 945311376621813
- Hsiao-Pin Chin, MDAntioch, CA 945311518045616
- Ioannis Eleftheriadis, MDAntioch, CA 945311679651731
- Louis Enrique, M.D.Antioch, CA 945311356363642
- Stephen Foster, MDAntioch, CA 945311851479927
Common questions
What is Lloyd Patrick Asuncion, MD's NPI number?
Lloyd Patrick Asuncion, MD's National Provider Identifier (NPI) is 1437353034, issued on Jun 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lloyd Patrick Asuncion, MD located?
The NPPES record lists a practice address at 4501 Sand Creek RD, Antioch, CA, 94531. Phone: (409) 789-1936. Providers update this record themselves, so call before visiting.
How can I verify Lloyd Patrick Asuncion, MD's license?
NPPES lists California license number A112991, 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 Lloyd Patrick Asuncion, MD prescribe under Medicare Part D?
In 2024, Lloyd Patrick Asuncion, MD had 5,293 Medicare Part D claims for 654 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.