Dr. Marilyn G. Chacko, DO
- Medicare services, 2024
- 606
- Medicare patients, 2024
- 248
- Part D claims, 2024
- 254
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 150 55th St, Brooklyn, NY 11220
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD
Acute Care Hospital outpatient department · Brooklyn, New York
Find Dr. Chacko's professional email, personal email and mobile number
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Dr. Marilyn G. Chacko is a hospitalist in Brooklyn, New York
Dr. Chacko practices at Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD in Brooklyn, New York.
Dr. Chacko's NPI, 1114453115, was assigned on May 11, 2017. Dr. Chacko holds New York license 304436.
- NPI
- 1114453115NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426398728
- NPI enumeration date
- May 11, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marilyn G. Chacko practices at Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD in Brooklyn, New York
Dr. Chacko's primary practice is Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD, at 150 55th St, Brooklyn, NY 11220.
- Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD150 55th St, Brooklyn, NY 11220
Source: Dmand AI Affiliation Data
Dr. Marilyn G. Chacko is affiliated with 2 sites of care and 2 medical groups
Dr. Chacko's primary practice is Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD in Brooklyn, New York. Dr. Chacko is also affiliated with Tisch Hospital. The medical group on file is NYU Langone Orthopedic Surgery Associates. Dmand AI also links Dr. Chacko to 1 more medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marilyn G. Chacko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chacko practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marilyn G. Chacko is one of 1,796 hospitalists in New York
Hospitalist is Dr. Chacko's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Chacko is licensed in New York.
Specialties and state licenses
- Hospitalist, New YorkPrimary
Hospitalists near Dr. Chacko
Counts of hospitalists 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. Marilyn G. Chacko billed Medicare for 606 services in 2024
CMS data shows 606 Medicare services from Dr. Chacko across 5 procedure codes in 2024, for 248 Medicare patients. Medicare paid $47,071 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chacko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6662024: 6069%
Dr. Chacko compared with the New York median for hospitalists, 2024
- Dr. Chacko
- New York median
- Medicare services
- 606vs 38856% above
- Medicare patients
- 248vs 16352% above
- Part D claims
- 47vs 5515% below
Medians across 1,696 hospitalists in New York with Dmand AI profiles that report each measure.
Dr. Chacko'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. Marilyn G. Chacko treated 248 Medicare patients in 2024, average age 79
CMS counts 248 Medicare patients who saw Dr. Chacko in 2024. The largest group is 85 and over, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 63% are also on Medicaid. Their average risk score is 3.31, 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. Chacko's median patient age at 67, with 50% women.
Dr. Chacko's Medicare patients by age, 2024
Dr. Chacko's Medicare patients by sex, 2024
- Women13354%
- Men11546%
Chronic conditions among Dr. Chacko's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis70%
- Ischemic heart disease69%
- Diabetes65%
- Chronic kidney disease63%
- Heart failure54%
- Mood disorders49%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chacko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marilyn G. Chacko wrote 254 Medicare Part D claims in 2024
In 2024, Dr. Chacko wrote 254 Medicare Part D claims for 96 patients. 87% of them were for generic drugs. CMS names the drug for 47 of them, across 3 drugs with 11 or more claims each, at $377 in total drug cost. In 2023, CMS named 25 claims across 2 drugs.
Dr. Chacko's Part D claims by kind of drug, 2024
- Generic221 claims87%
- Brand-name22 claims9%
- Other11 claims4%
Dr. Chacko'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.
Drug classes CMS tracks in Dr. Chacko's Part D claims, 2024
- Antibiotics22%55 of 254 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 252024: 4788%
Drugs named by CMS: 3 in 2024, 2 in 2023.
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
Dr. Marilyn G. Chacko scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Chacko for performance year 2024, reported as part of a group. Dr. Chacko accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chacko's MIPS scores, performance year 2024
- 91of 100Final score
- 91.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Marilyn G. Chacko received $15 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Chacko from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $15.
Companies that paid Dr. Chacko the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marilyn G. Chacko'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 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)Clinician Public Reporting: Overall MIPS Performance (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. Marilyn G. Chacko
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. Marilyn G. Chacko's NPI number?
Dr. Marilyn G. Chacko's NPI number is 1114453115. It was assigned on May 11, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Marilyn G. Chacko?
Dr. Marilyn G. Chacko is a hospitalist in Brooklyn, New York. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Marilyn G. Chacko practice?
Dr. Chacko practices at 150 55th St, Brooklyn, NY 11220. Dr. Chacko's primary practice is Nyu Langone Hospital-Brooklyn-Cardiac Catheterization Lab - HOPD in Brooklyn, New York. Dmand AI also links Dr. Chacko to 1 medical group.
What is Dr. Marilyn G. Chacko's medical license number?
Dr. Chacko holds New York license 304436.
Which hospitals is Dr. Marilyn G. Chacko affiliated with?
Dr. Chacko is affiliated with Tisch Hospital.
What medical group is Dr. Marilyn G. Chacko part of?
Dr. Chacko is linked to NYU Langone Orthopedic Surgery Associates. Dmand AI links Dr. Chacko to 1 more medical group.
Does Dr. Marilyn G. Chacko accept Medicare?
Yes. CMS data shows Dr. Chacko billed Medicare for 606 services in 2024, and Dr. Chacko accepts Medicare assignment.
What is Dr. Marilyn G. Chacko's MIPS score?
Dr. Chacko's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Marilyn G. Chacko see?
CMS counts 248 Medicare patients who saw Dr. Chacko in 2024, with an average age of 79.
What services does Dr. Marilyn G. Chacko bill to Medicare?
In 2024, Dr. Chacko's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99238) and hospital inpatient care (99233).
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What drugs does Dr. Marilyn G. Chacko prescribe most?
In 2024 Medicare Part D data, Dr. Chacko's most prescribed drugs by claims were Losartan Potassium, Metoprolol Succinate and Amoxicillin-Clavulanate Potass.
Has Dr. Marilyn G. Chacko received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Chacko from 1 company from 2021 to 2021. The largest total came from Gilead Sciences, Inc.
How long has Dr. Marilyn G. Chacko been practicing?
Dr. Chacko graduated from medical school in 2017, 9 years ago.
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