Dr. Karthikeyan Ananthasubramaniam, MD

  • West Bloomfield, MI
  • Cardiologist
NPI1801964333PAC ID1557413879
Medicare services, 2024
1,888
Medicare patients, 2024
859
Part D claims, 2024
2,064
Publications
42
Clinical trials
3
Practice address
6777 West Maple Road, West Bloomfield, MI 48322
Practice phone
Call (248) 325-1000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Henry Ford West Bloomfield Hospital

Hospital · West Bloomfield, Michigan

See all 6 affiliations

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Dr. Karthikeyan Ananthasubramaniam is a cardiologist in West Bloomfield, Michigan

Dr. Ananthasubramaniam practices at Henry Ford West Bloomfield Hospital in West Bloomfield, Michigan, part of Henry Ford Health.

Dr. Ananthasubramaniam's NPI, 1801964333, was assigned on December 1, 2006. Dr. Ananthasubramaniam graduated from Madras Medical College in 1991. Dr. Ananthasubramaniam's Michigan license number on file is 4301059145.

NPI and contact details
Medicare PAC ID
1557413879
NPI enumeration date
December 1, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(248) 325-1000
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
61
Medical school graduation
1991

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

Dr. Karthikeyan Ananthasubramaniam practices at Henry Ford West Bloomfield Hospital in West Bloomfield, Michigan

Dr. Ananthasubramaniam's primary practice is Henry Ford West Bloomfield Hospital, at 6777 West Maple Road, West Bloomfield, MI 48322 in Oakland County. The practice phone is (248) 325-1000.

Source: Dmand AI Affiliation Data

Dr. Karthikeyan Ananthasubramaniam is affiliated with 5 sites of care and 1 medical group

Dr. Ananthasubramaniam's primary practice is Henry Ford West Bloomfield Hospital in West Bloomfield, Michigan, part of Henry Ford Health. Dr. Ananthasubramaniam is also affiliated with Henry Ford Hospital. The medical group on file is Henry Ford Health. Dmand AI also links Dr. Ananthasubramaniam to 1 more hospital, 1 group practice or clinic and 1 hospital outpatient department, each named with a free account.

See all 6 affiliations for Dr. Ananthasubramaniam

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Karthikeyan Ananthasubramaniam's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ananthasubramaniam practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Henry Ford West Bloomfield HospitalAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Karthikeyan Ananthasubramaniam is one of 768 cardiologists in Michigan

Cardiovascular disease is Dr. Ananthasubramaniam's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Ananthasubramaniam is board certified in adult congenital heart disease by the American Board of Internal Medicine. Dr. Ananthasubramaniam has a license on file in Michigan.

Specialties and state licenses

  • Cardiovascular disease, MichiganPrimaryLicense 4301059145 · 1996 to 2025 · taxonomy 207RC0000X

Clinical focus

Dmand AI lists atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease, chronic hypertension, coronary artery disease, heart blockage, heart failure and heart valve disorders among the conditions Dr. Ananthasubramaniam treats.

Cardiologists near Dr. Ananthasubramaniam

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

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

Dr. Karthikeyan Ananthasubramaniam billed Medicare for 1,888 services in 2024

CMS data shows 1,888 Medicare services from Dr. Ananthasubramaniam across 23 procedure codes in 2024, for 859 Medicare patients. Medicare paid $59,686 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,888
Medicare patients859
Paid by Medicare$59,686
Procedure codes23

Dr. Ananthasubramaniam's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 1,3092024: 1,3876%
Office and hospital visits
2023: 2672024: 21719%
Imaging
2023: 1722024: 1847%
Other services
2023: 02024: 100

Dr. Ananthasubramaniam compared with the Michigan median for cardiologists, 2024

  • Dr. Ananthasubramaniam
  • Michigan median
Medicare services
1,888vs 1,43532% above
Medicare patients
859vs 64433% above
Part D claims
1,876vs 1,56220% above

Medians across 749 cardiologists in Michigan with Dmand AI profiles that report each measure.

Dr. Ananthasubramaniam's 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. Ananthasubramaniam

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

Dr. Karthikeyan Ananthasubramaniam treated 859 Medicare patients in 2024, average age 76

CMS counts 859 Medicare patients who saw Dr. Ananthasubramaniam in 2024. The largest group is 65 to 74, with 356 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.76, 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. Ananthasubramaniam's median patient age at 72, with 49% women.

Medicare patients, 2024859
Average age76
Average risk score1.76
Also on Medicaid12%

Dr. Ananthasubramaniam's Medicare patients by age, 2024

Dr. Ananthasubramaniam's Medicare patients by sex, 2024

  • Women45253%
  • Men40747%

Chronic conditions among Dr. Ananthasubramaniam's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Ischemic heart disease53%
  4. Arthritis50%
  5. Heart failure43%
  6. Diabetes40%
  7. Chronic kidney disease39%
  8. Atrial fibrillation38%

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

Dr. Ananthasubramaniam's 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

  • Women49%
  • Men51%

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

Dr. Karthikeyan Ananthasubramaniam wrote 2,064 Medicare Part D claims in 2024

In 2024, Dr. Ananthasubramaniam wrote 2,064 Medicare Part D claims for 291 patients. 74% of them were for generic drugs. CMS names the drug for 1,876 of them, across 32 drugs with 11 or more claims each, at $5,856,832 in total drug cost. In 2023, CMS named 1,807 claims across 34 drugs.

Part D claims, 20242,064
Drugs named by CMS32
Total drug cost$5.9M
Part D patients291

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

  • Generic1,536 claims74%
  • Brand-name528 claims26%

Dr. Ananthasubramaniam's 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: 1,8072024: 1,8764%

Drugs named by CMS: 32 in 2024, 34 in 2023.

See all prescribing by Dr. Ananthasubramaniam

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. Karthikeyan Ananthasubramaniam takes part in Medicare

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

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Karthikeyan Ananthasubramaniam has 42 publications on record

Dmand AI links 42 papers to Dr. Ananthasubramaniam, published from 2010 to 2023. 2021 was the busiest year, with 6. The most frequent topics are Coronary Artery Disease, Cardiomyopathies and Coronary Angiography. Dr. Ananthasubramaniam has published most often in Cardiol Rev. Dr. Ananthasubramaniam's most frequent co-authors are Santanu Biswas, MD, Harish Chandna, MD and Kavitha M. Chinnaiyan, MD.

Papers42
Years published2010 to 2023

Dr. Ananthasubramaniam's papers by year, 2012 to 2023

Topics Dr. Ananthasubramaniam writes about most

  • Coronary Artery Disease
  • Cardiomyopathies
  • Coronary Angiography
  • Myocardial Perfusion Imaging
  • Predictive Value of Tests
  • Tomography, Emission-Computed, Single-Photon
  • Electrocardiography
  • Exercise Test

Dr. Ananthasubramaniam's most frequent co-authors

Recent publications by Dr. Ananthasubramaniam

See all 42 publications and co-authors

See who Dr. Ananthasubramaniam researches with

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

How network discovery works

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

Dr. Karthikeyan Ananthasubramaniam has worked on 3 clinical trials

Dmand AI links Dr. Ananthasubramaniam to 3 clinical trials. Conditions studied include Coronary Artery Disease, Heart Failure and Coronary Disease. Henry Ford Health System sponsors the most, 2.

Conditions in Dr. Ananthasubramaniam's trials

  • Coronary Artery Disease
  • Heart Failure
  • Coronary Disease
  • Heart Diseases

Investigators on the most trials with Dr. Ananthasubramaniam

Recent clinical trials with Dr. Ananthasubramaniam

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Karthikeyan Ananthasubramaniam received $126,639 in industry payments from 2016 to 2025

CMS Open Payments shows 98 general payments to Dr. Ananthasubramaniam from 16 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 69% of the total. Bristol-Myers Squibb Company paid the most, $73,846. It also lists 5 research payments totaling $10,955 from 2016 to 2020.

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

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

$126.6Kin total
  • Speaker and faculty fees$87,37069%
  • Consulting fees$20,28016%
  • Travel and lodging$8,7967%
  • Honoraria$6,0005%
  • Other$4,1943%

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

Share is of all general payments to this clinician.

See all payments to Dr. Ananthasubramaniam

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

Dr. Karthikeyan Ananthasubramaniam has 3 awards and honors on record

Dmand AI lists 3 awards for Dr. Ananthasubramaniam, most recently ACC Fellow in 2013.

Awards and honors for Dr. Ananthasubramaniam

  1. 2013
    • ACC Fellow
  2. Undated
    • CMS Stage 1 EHR
    • Detroit Top Doc

Source: Dmand AI Professional Profile Data

Dr. Karthikeyan Ananthasubramaniam graduated from Madras Medical College

Dr. Ananthasubramaniam graduated from Madras Medical College in 1991.

  1. Medical schoolMadras Medical College
  2. Board certified in adult congenital heart diseaseAmerican Board of Internal Medicine
  3. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Karthikeyan Ananthasubramaniam accepts plans from 12 insurance carriers

Dr. Ananthasubramaniam is in network with 12 carriers, including Health Alliance Plan, Priority Health and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Health Alliance Plan
  • Priority Health
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Molina
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Aspirus Health Plan
  • +4 more carriersWith a free account

Plan types Dr. Ananthasubramaniam accepts, by number of carriers

  1. HMO8
  2. Medicare8
  3. PPO6
  4. POS4
  5. EPO2
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Karthikeyan Ananthasubramaniam'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
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. Karthikeyan Ananthasubramaniam

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. Karthikeyan Ananthasubramaniam's NPI number?

Dr. Karthikeyan Ananthasubramaniam's NPI number is 1801964333. It was assigned on December 1, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Karthikeyan Ananthasubramaniam?

Dr. Karthikeyan Ananthasubramaniam is a cardiologist in West Bloomfield, Michigan. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).

Where does Dr. Karthikeyan Ananthasubramaniam practice?

Dr. Ananthasubramaniam practices at 6777 West Maple Road, West Bloomfield, MI 48322. Dr. Ananthasubramaniam's primary practice is Henry Ford West Bloomfield Hospital in West Bloomfield, Michigan, part of Henry Ford Health. Dmand AI also links Dr. Ananthasubramaniam to 1 hospital, 1 group practice or clinic and 1 hospital outpatient department.

What is Dr. Karthikeyan Ananthasubramaniam's office phone number?

The practice phone on file for Dr. Ananthasubramaniam is (248) 325-1000.

What is Dr. Karthikeyan Ananthasubramaniam's medical license number?

Dr. Ananthasubramaniam's Michigan license number on file is 4301059145.

Which hospitals is Dr. Karthikeyan Ananthasubramaniam affiliated with?

Dr. Ananthasubramaniam practices at Henry Ford West Bloomfield Hospital in West Bloomfield, Michigan. Dr. Ananthasubramaniam is also affiliated with Henry Ford Hospital. Dmand AI links Dr. Ananthasubramaniam to 1 more hospital.

What medical group is Dr. Karthikeyan Ananthasubramaniam part of?

Dr. Ananthasubramaniam is linked to Henry Ford Health.

Does Dr. Karthikeyan Ananthasubramaniam accept Medicare?

Yes. CMS data shows Dr. Ananthasubramaniam billed Medicare for 1,888 services in 2024, and Dr. Ananthasubramaniam accepts Medicare assignment.

How many Medicare patients does Dr. Karthikeyan Ananthasubramaniam see?

CMS counts 859 Medicare patients who saw Dr. Ananthasubramaniam in 2024, with an average age of 76.

Is Dr. Karthikeyan Ananthasubramaniam board certified?

Yes. Dr. Ananthasubramaniam is board certified in adult congenital heart disease by the American Board of Internal Medicine.

Show 8 more questionsShow fewer questions

What services does Dr. Karthikeyan Ananthasubramaniam bill to Medicare?

In 2024, Dr. Ananthasubramaniam's most billed Medicare services were heart test or procedure (93306), heart test or procedure (93016) and heart test or procedure (93018).

Where did Dr. Karthikeyan Ananthasubramaniam go to medical school?

Dr. Ananthasubramaniam graduated from Madras Medical College in 1991.

What drugs does Dr. Karthikeyan Ananthasubramaniam prescribe most?

In 2024 Medicare Part D data, Dr. Ananthasubramaniam's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Vyndamax.

Has Dr. Karthikeyan Ananthasubramaniam received payments from drug or device companies?

CMS Open Payments shows $126,639 in general payments to Dr. Ananthasubramaniam from 16 companies from 2016 to 2025. The largest total came from Bristol-Myers Squibb Company.

How long has Dr. Karthikeyan Ananthasubramaniam been practicing?

Dr. Ananthasubramaniam graduated from medical school in 1991, 35 years ago.

Does Dr. Karthikeyan Ananthasubramaniam do research?

Dmand AI links 42 publications to Dr. Ananthasubramaniam, published from 2010 to 2023. Dr. Ananthasubramaniam has worked on 3 clinical trials.

Who does Dr. Karthikeyan Ananthasubramaniam publish with?

Dr. Ananthasubramaniam's most frequent co-authors are Santanu Biswas, MD (2 shared papers), Harish Chandna, MD (2 shared papers) and Kavitha M. Chinnaiyan, MD (2 shared papers).

What insurance does Dr. Karthikeyan Ananthasubramaniam accept?

Dr. Ananthasubramaniam is in network with 12 carriers, including Health Alliance Plan, Priority Health and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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