Dr. Malar Vasanthan, MD
- Medicare services, 2024
- 289
- Medicare patients, 2024
- 111
- Part D claims, 2024
- 131
- Hospital affiliations
- 4
- Industry payments
- $168
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Vasanthan's professional email, personal email and mobile number
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Dr. Malar Vasanthan is an internist in Grand Rapids, Michigan
Dr. Vasanthan practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Vasanthan's NPI, 1639366743, was assigned on October 2, 2007. Dr. Vasanthan holds Michigan license 4301081130.
- NPI
- 1639366743NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880763523
- NPI enumeration date
- October 2, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Malar Vasanthan practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. Vasanthan's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Dr. Malar Vasanthan is affiliated with 4 sites of care and 1 medical group
Dr. Vasanthan's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dr. Vasanthan is also affiliated with Corewell Health Zeeland Hospital. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Dr. Vasanthan to 2 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Malar Vasanthan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vasanthan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Malar Vasanthan is one of 4,804 internists in Michigan
Internal medicine is Dr. Vasanthan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Vasanthan is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Vasanthan
Counts of internists 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. Malar Vasanthan billed Medicare for 289 services in 2024
CMS data shows 289 Medicare services from Dr. Vasanthan across 4 procedure codes in 2024, for 111 Medicare patients. Medicare paid $23,063 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Vasanthan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3862024: 28925%
Dr. Vasanthan compared with the Michigan median for internists, 2024
- Dr. Vasanthan
- Michigan median
- Medicare services
- 289vs 42332% below
- Medicare patients
- 111vs 15930% below
- Part D claims
- 27vs 31491% below
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Vasanthan'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Malar Vasanthan treated 111 Medicare patients in 2024, average age 73
CMS counts 111 Medicare patients who saw Dr. Vasanthan in 2024. The largest group is 75 to 84, with 30 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.87, 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. Vasanthan's median patient age at 69, with 49% women.
Dr. Vasanthan's Medicare patients by age, 2024
Dr. Vasanthan's Medicare patients by sex, 2024
- Women6357%
- Men4843%
Chronic conditions among Dr. Vasanthan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety56%
- Arthritis53%
- Heart failure51%
- Chronic kidney disease50%
- Mood disorders48%
- Depression46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Vasanthan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
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. Malar Vasanthan wrote 131 Medicare Part D claims in 2024
In 2024, Dr. Vasanthan wrote 131 Medicare Part D claims for 57 patients. 87% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $213 in total drug cost. In 2021, CMS named 11 claims across 1 drug.
Dr. Vasanthan's Part D claims by kind of drug, 2024
- Generic114 claims87%
- Brand-name17 claims13%
Dr. Vasanthan's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Vasanthan's Part D claims, 2024
- Antibiotics21%27 of 131 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 112022: 27145%
Drugs named by CMS: 2 in 2022, 1 in 2021.
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. Malar Vasanthan takes part in Medicare
Dr. Vasanthan 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. Malar Vasanthan received $168 in industry payments from 2017 to 2022
CMS Open Payments shows 7 general payments to Dr. Vasanthan from 3 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $106.
General payments to Dr. Vasanthan by program year, 2017 to 2022
Companies that paid Dr. Vasanthan the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Malar Vasanthan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Malar Vasanthan
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. Malar Vasanthan's NPI number?
Dr. Malar Vasanthan's NPI number is 1639366743. It was assigned on October 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Malar Vasanthan?
Dr. Malar Vasanthan is an internist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Malar Vasanthan practice?
Dr. Vasanthan practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Vasanthan's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Dr. Vasanthan to 2 hospitals.
What is Dr. Malar Vasanthan's office phone number?
The practice phone on file for Dr. Vasanthan is (616) 391-1774.
What is Dr. Malar Vasanthan's medical license number?
Dr. Vasanthan holds Michigan license 4301081130.
Which hospitals is Dr. Malar Vasanthan affiliated with?
Dr. Vasanthan practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Dr. Vasanthan is also affiliated with Corewell Health Zeeland Hospital. Dmand AI links Dr. Vasanthan to 2 more hospitals.
What medical group is Dr. Malar Vasanthan part of?
Dr. Vasanthan is linked to Corewell Health Medical Group West.
Does Dr. Malar Vasanthan accept Medicare?
Yes. CMS data shows Dr. Vasanthan billed Medicare for 289 services in 2024, and Dr. Vasanthan accepts Medicare assignment.
How many Medicare patients does Dr. Malar Vasanthan see?
CMS counts 111 Medicare patients who saw Dr. Vasanthan in 2024, with an average age of 73.
What services does Dr. Malar Vasanthan bill to Medicare?
In 2024, Dr. Vasanthan's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
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What drugs does Dr. Malar Vasanthan prescribe most?
In 2022 Medicare Part D data, Dr. Vasanthan's most prescribed drugs by claims were Pantoprazole Sodium and Amoxicillin-Clavulanate Potass.
Has Dr. Malar Vasanthan received payments from drug or device companies?
CMS Open Payments shows $168 in general payments to Dr. Vasanthan from 3 companies from 2017 to 2022. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Malar Vasanthan been practicing?
Dr. Vasanthan graduated from medical school in 1993, 33 years ago.
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