Marcus Lejon Williams, MD
Interventional Cardiology Physician · La Jolla, CA
Marcus Lejon Williams, MD is an interventional cardiology physician with a practice address in La Jolla, California, and NPI 1417026436, issued on Nov 6, 2006. Check the license (California A98711, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marcus Lejon Williams
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License numbers
- A98711 CA
054048 GA
Self-reported in NPPES; status is on the state search - Practice location
- 10666 N Torrey Pines Road, La Jolla, CA 92037
- Phone
- (858) 554-5257
- Enumerated
- Nov 6, 2006
- Record last updated
- Jun 30, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 854728375A GA
- Medicare enrollment
- Enrolled (PECOS I20070108000413); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 2001
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 632 in California → Look up another NPI →
Also registered at 10666 N Torrey Pines Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Juenger, RDRegistered Dietitian1194256909
Verify Marcus Lejon Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98711Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average interventional cardiology physician in 2024
5,045 Medicare Part D claims for 706 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Eliquis633 claims
- Furosemide350 claims
- Clopidogrel306 claims
- Amlodipine Besylate304 claims
- Rosuvastatin Calcium284 claims
- Metoprolol Succinate265 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.
Industry payments in 2024: $508.70
10 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 6,394 providers of this specialty with any payment received $7,062.29 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Coffee Regional Medical Center IncDouglas, GA
- Emory Specialty Associates, LLCAtlanta, GA
- Tift Regional Health System IncTifton, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcus Lejon Williams among 632 interventional cardiology physician records in California
Marcus Lejon Williams, MD is one of 632 interventional cardiology physician records with a practice address in California. 90% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 52% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2001 · median 2001 among the 526 with a school on file
- Record last updated2009 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in California
There are 632 interventional cardiology physician records in California.
All 632 in California → Every provider in La Jolla → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Gregory Czaja, MDLa Jolla, CA 920371225390461
- John Harrington, M.D.La Jolla, CA 920371346251451
- Michael Healy, MDLa Jolla, CA 920371619396017
- Fady Ibrahim, M.D.La Jolla, CA 920371861854390
- Sibi KrishnamurthyLa Jolla, CA 920371043672181
- Parhum Namdaran, MDLa Jolla, CA 920371952797870
- Jad Omran, MDLa Jolla, CA 920371366720211
- Matthew Price, M.D.La Jolla, CA 920371659343945
Common questions
What is Marcus Lejon Williams, MD's NPI number?
Marcus Lejon Williams, MD's National Provider Identifier (NPI) is 1417026436, issued on Nov 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marcus Lejon Williams, MD located?
The NPPES record lists a practice address at 10666 N Torrey Pines Road, La Jolla, CA, 92037. Phone: (858) 554-5257. Providers update this record themselves, so call before visiting.
How can I verify Marcus Lejon Williams, MD's license?
NPPES lists California license number A98711, 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 Marcus Lejon Williams, MD prescribe under Medicare Part D?
In 2024, Marcus Lejon Williams, MD had 5,045 Medicare Part D claims for 706 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. 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.