Dr. Marcus Lejon Williams, MD

  • Decatur, GA
  • Interventional cardiologist
NPI1417026436PAC ID3971503301
Medicare services, 2024
5,058
Medicare patients, 2024
1,150
Part D claims, 2024
5,045
Publications
5
Hospital affiliations
5
Practice address
101 W Ponce De Leon Ave, Decatur, GA 30030
Practice phone
Call (404) 778-4888
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Emory Specialty Associates

Decatur, Georgia

See all 11 affiliations

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Dr. Marcus Lejon Williams is an interventional cardiologist in Decatur, Georgia

Dr. Williams practices at Emory Specialty Associates in Decatur, Georgia.

Dr. Williams' NPI, 1417026436, was assigned on November 6, 2006. Dr. Williams graduated from Weill Cornell Medicine in 2001. Dr. Williams holds California license A98711.

NPI and contact details
Medicare PAC ID
3971503301
NPI enumeration date
November 6, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(404) 778-4888
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
51
Medical school graduation
2001

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Marcus Lejon Williams practices at Emory Specialty Associates in Decatur, Georgia

Dr. Williams' primary practice is Emory Specialty Associates, at 101 W Ponce De Leon Ave, Decatur, GA 30030 in Dekalb County. The practice phone is (404) 778-4888.

  • Emory Specialty Associates
    101 W Ponce De Leon Ave, Decatur, GA 30030 · Dekalb CountyPhone(404) 778-4888

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Marcus Lejon Williams is affiliated with 7 sites of care and 4 medical groups

Dr. Williams' primary practice is Emory Specialty Associates in Decatur, Georgia. Dr. Williams is also affiliated with Emory University Hospital. The medical group on file is Emory Healthcare. Dmand AI also links Dr. Williams to 4 more hospitals, 3 medical groups and 1 group practice or clinic, each named with a free account.

See all 11 affiliations for Dr. Williams

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Marcus Lejon Williams' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Emory Specialty AssociatesAvailable with a free account
+6 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Marcus Lejon Williams is one of 214 interventional cardiologists in Georgia

Interventional cardiology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Williams is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Williams' licenses on file in 4 states: California, Georgia, Alabama and New York.

Specialties and state licenses

  • Interventional cardiology, CaliforniaPrimaryLicense A98711 · 2007 to 2026 · taxonomy 207RI0011X
  • Cardiovascular disease, GeorgiaLicense 054048 · 2003 to 2027 · taxonomy 207RC0000X
  • Alabama license2011 to 2014
  • New York license2003 to 2005

Clinical focus

Dmand AI lists aneurysm, angioplasty, atrial fibrillation and flutter, cardiac arrhythmia, cardiac catheterization, cardiomyopathy, cerebrovascular disease and chronic hypertension among the conditions Dr. Williams treats.

Interventional cardiologists near Dr. Williams

Counts of interventional cardiologists with a Dmand AI profile, by place and practice. Each opens the list.

214interventional cardiologists in Georgia
8interventional cardiologists in Decatur

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Marcus Lejon Williams billed Medicare for 5,058 services in 2024

CMS data shows 5,058 Medicare services from Dr. Williams across 26 procedure codes in 2024, for 1,150 Medicare patients. Medicare paid $255,488 for them.

Medicare services, 20245,058
Medicare patients1,150
Paid by Medicare$255,488
Procedure codes26

Dr. Williams' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 2,0052024: 2,21611%
Office and hospital visits
2023: 1,1732024: 1,1821%
Other services
2023: 1982024: 1,156484%
Drugs given in the office
2023: 3522024: 3613%
Imaging
2023: 1242024: 14315%

Where Dr. Williams' Medicare services took place, 2024

  • In an office3,88677%
  • In a facility1,17223%

Dr. Williams compared with the Georgia median for interventional cardiologists, 2024

  • Dr. Williams
  • Georgia median
Medicare services
5,058vs 1,7662.9 times
Medicare patients
1,150vs 72459% above
Part D claims
4,822vs 2,43098% above

Medians across 213 interventional cardiologists in Georgia with Dmand AI profiles that report each measure.

Dr. Williams' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Williams

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Marcus Lejon Williams treated 1,150 Medicare patients in 2024, average age 75

CMS counts 1,150 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 455 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 72, with 55% women.

Medicare patients, 20241,150
Average age75
Average risk score1.60
Also on Medicaid16%

Dr. Williams' Medicare patients by age, 2024

Dr. Williams' Medicare patients by sex, 2024

  • Women59852%
  • Men55248%

Chronic conditions among Dr. Williams' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis53%
  4. Ischemic heart disease46%
  5. Chronic kidney disease43%
  6. Diabetes43%
  7. Atrial fibrillation38%
  8. Heart failure37%

Share of Medicare patients with each condition. A patient can have several.

Dr. Williams' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women55%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Marcus Lejon Williams wrote 5,045 Medicare Part D claims in 2024

In 2024, Dr. Williams wrote 5,045 Medicare Part D claims for 706 patients. 80% of them were for generic drugs. CMS names the drug for 4,822 of them, across 53 drugs with 11 or more claims each, at $800,422 in total drug cost. In 2023, CMS named 4,504 claims across 47 drugs.

Part D claims, 20245,045
Drugs named by CMS53
Total drug cost$800,422
Part D patients706

Dr. Williams' Part D claims by kind of drug, 2024

  • Generic4,022 claims80%
  • Brand-name1,023 claims20%

Dr. Williams' most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 4,5042024: 4,8227%

Drugs named by CMS: 53 in 2024, 47 in 2023.

See all prescribing by Dr. Williams

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Marcus Lejon Williams takes part in Medicare

Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Coronary angioplasty and stenting: 1 to 10 procedures (CMS shows small counts as a range)

Varicose vein removal: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Marcus Lejon Williams has 5 publications on record

Dmand AI links 5 papers to Dr. Williams, published from 2010 to 2022. The most frequent topics are Calcium, Predictive Value of Tests and Tomography, X-Ray Computed. Dr. Williams' most frequent co-authors are Richmond Augustine Akatue, MD, Colin MacLeod Barker, MD and Ryan Alan Brown, MD.

Papers5
Years published2010 to 2022

Topics Dr. Williams writes about most

  • Calcium
  • Predictive Value of Tests
  • Tomography, X-Ray Computed

Dr. Williams' most frequent co-authors

Recent publications by Dr. Williams

See all 5 publications and co-authors

See who Dr. Williams researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right interventional cardiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Marcus Lejon Williams received $2,310 in industry payments from 2016 to 2025

CMS Open Payments shows 73 general payments to Dr. Williams from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Boston Scientific Corporation paid the most, $874.

General payments to Dr. Williams by program year, 2016 to 2025

General payments to Dr. Williams by kind, 2016 to 2025

$2.3Kin total
  • Food and beverage$2,29799%
  • Education$121%

Companies that paid Dr. Williams the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Williams

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Marcus Lejon Williams graduated from Weill Cornell Medicine

Dr. Williams graduated from Weill Cornell Medicine in 2001.

  1. Medical schoolWeill Cornell Medicine
  2. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine
  3. Board certified in interventional cardiologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Marcus Lejon Williams accepts plans from 16 insurance carriers

Dr. Williams is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.

Plan types Dr. Williams accepts, by number of carriers

  1. Medicare11
  2. PPO11
  3. HMO9
  4. EPO5
  5. POS5
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Marcus Lejon Williams's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Marcus Lejon Williams

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Marcus Lejon Williams' NPI number?

Dr. Marcus Lejon Williams' NPI number is 1417026436. It was assigned on November 6, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Marcus Lejon Williams?

Dr. Marcus Lejon Williams is an interventional cardiologist in Decatur, Georgia. The primary specialty in the NPI Registry is Interventional Cardiology Physician (taxonomy code 207RI0011X).

Where does Dr. Marcus Lejon Williams practice?

Dr. Williams practices at 101 W Ponce De Leon Ave, Decatur, GA 30030. Dr. Williams' primary practice is Emory Specialty Associates in Decatur, Georgia. Dmand AI also links Dr. Williams to 4 hospitals, 3 medical groups and 1 group practice or clinic.

What is Dr. Marcus Lejon Williams' office phone number?

The practice phone on file for Dr. Williams is (404) 778-4888.

What is Dr. Marcus Lejon Williams' medical license number?

Dr. Williams holds California license A98711, one of the licenses on file in 4 states.

Which states has Dr. Marcus Lejon Williams been licensed in?

Dmand AI has state licenses on file for Dr. Williams in California (2007 to 2026), Georgia (2003 to 2027), Alabama (2011 to 2014) and New York (2003 to 2005).

Which hospitals is Dr. Marcus Lejon Williams affiliated with?

Dr. Williams is affiliated with Emory University Hospital. Dmand AI links Dr. Williams to 4 more hospitals.

What medical group is Dr. Marcus Lejon Williams part of?

Dr. Williams is linked to Emory Healthcare. Dmand AI links Dr. Williams to 3 more medical groups.

Does Dr. Marcus Lejon Williams accept Medicare?

Yes. CMS data shows Dr. Williams billed Medicare for 5,058 services in 2024, and Dr. Williams accepts Medicare assignment.

How many Medicare patients does Dr. Marcus Lejon Williams see?

CMS counts 1,150 Medicare patients who saw Dr. Williams in 2024, with an average age of 75.

Show 9 more questionsShow fewer questions

Is Dr. Marcus Lejon Williams board certified?

Yes. Dr. Williams is board certified in cardiovascular disease by the American Board of Internal Medicine.

What services does Dr. Marcus Lejon Williams bill to Medicare?

In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and heart test or procedure (93010).

Where did Dr. Marcus Lejon Williams go to medical school?

Dr. Williams graduated from Weill Cornell Medicine in 2001.

What drugs does Dr. Marcus Lejon Williams prescribe most?

In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Eliquis, Furosemide and Clopidogrel.

Has Dr. Marcus Lejon Williams received payments from drug or device companies?

CMS Open Payments shows $2,310 in general payments to Dr. Williams from 24 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.

How long has Dr. Marcus Lejon Williams been practicing?

Dr. Williams graduated from medical school in 2001, 25 years ago.

Does Dr. Marcus Lejon Williams do research?

Dmand AI links 5 publications to Dr. Williams, published from 2010 to 2022.

Who does Dr. Marcus Lejon Williams publish with?

Dr. Williams' most frequent co-authors are Richmond Augustine Akatue, MD (1 shared paper), Colin MacLeod Barker, MD (1 shared paper) and Ryan Alan Brown, MD (1 shared paper).

What insurance does Dr. Marcus Lejon Williams accept?

Dr. Williams is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.

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