Dr. Gopakumar Vasydeva Iyer, MD

  • New York, NY
  • Internist
NPI1689792756PAC ID3476645748
Medicare services, 2024
694
Medicare patients, 2024
160
Part D claims, 2024
418
Publications
16
Clinical trials
5
Practice address
1275 York Avenue, New York, NY 10065
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Memorial Sloan Kettering Cancer Center

Hospital · New York, New York

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Dr. Gopakumar Vasydeva Iyer is an internist in New York, New York

Dr. Iyer practices at Memorial Sloan Kettering Cancer Center in New York, New York, part of Memorial Sloan Kettering Cancer Center.

Dr. Iyer's NPI, 1689792756, was assigned on March 27, 2007. Dr. Iyer graduated from Vanderbilt University School Of Medicine in 2003. Dr. Iyer holds New York license 247043.

NPI and contact details
Medicare PAC ID
3476645748
NPI enumeration date
March 27, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
49
Medical school graduation
2003

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

Dr. Gopakumar Vasydeva Iyer practices at Memorial Sloan Kettering Cancer Center in New York, New York

Dr. Iyer's primary practice is Memorial Sloan Kettering Cancer Center, at 1275 York Avenue, New York, NY 10065.

Source: Dmand AI Affiliation Data

Dr. Gopakumar Vasydeva Iyer is affiliated with 1 site of care and 2 medical groups

Dr. Iyer's primary practice is Memorial Sloan Kettering Cancer Center in New York, New York, part of Memorial Sloan Kettering Cancer Center. The medical group on file is Memorial Sloan Kettering Cancer Center. Dmand AI also links Dr. Iyer to 1 more medical group, named with a free account.

See all 3 affiliations for Dr. Iyer

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

Dmand AI tracks the EHR system at Dr. Gopakumar Vasydeva Iyer's practice

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

EHR by site
SiteEHR vendor and product
Memorial Sloan Kettering Cancer CenterAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gopakumar Vasydeva Iyer is one of 9,643 internists in New York

Internal medicine is Dr. Iyer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Iyer is board certified in medical oncology by the American Board of Internal Medicine. Dmand AI has Dr. Iyer's licenses on file in 4 states: New York, Florida, New Jersey and Michigan.

Specialties and state licenses

  • Internal medicine, New YorkPrimaryLicense 247043 · 2007 to 2027 · taxonomy 207R00000X
  • Florida licenseSince 2021
  • New Jersey license2020 to 2025
  • Hospitalist, MichiganLicense 4301084242 · 2004 to 2011 · taxonomy 208M00000X

Clinical focus

Dmand AI lists fluid and electrolyte imbalances and prostate cancer among the conditions Dr. Iyer treats.

Internists near Dr. Iyer

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. Gopakumar Vasydeva Iyer billed Medicare for 694 services in 2024

CMS data shows 694 Medicare services from Dr. Iyer across 3 procedure codes in 2024, all of them office visits, for 160 Medicare patients. Medicare paid $62,677 for them. Every service was in an office.

Medicare services, 2024694
Medicare patients160
Paid by Medicare$62,677
Procedure codes3

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

  • 2023
  • 2024
Office and hospital visits
2023: 8002024: 69413%

Dr. Iyer compared with the New York median for internists, 2024

  • Dr. Iyer
  • New York median
Medicare services
694vs 42663% above
Medicare patients
160vs 158Close to median
Part D claims
214vs 62266% below

Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.

Dr. Iyer'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. Iyer

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

Dr. Gopakumar Vasydeva Iyer treated 160 Medicare patients in 2024, average age 76

CMS counts 160 Medicare patients who saw Dr. Iyer in 2024. The largest group is 75 to 84, with 80 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.74, 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. Iyer's median patient age at 76, with 31% women.

Medicare patients, 2024160
Average age76
Average risk score2.74
Also on Medicaid11%

Dr. Iyer's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Iyer's Medicare patients by sex, 2024

  • Women5031%
  • Men11069%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Cancer68%
  4. Arthritis62%
  5. Chronic kidney disease48%
  6. Ischemic heart disease41%
  7. Anxiety36%
  8. Diabetes36%

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

Dr. Iyer's patients across all payers

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

Patient panel by age, all payers

Median age 76

Patient panel by sex, all payers

  • Women31%
  • Men68%

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

Dr. Gopakumar Vasydeva Iyer wrote 418 Medicare Part D claims in 2024

In 2024, Dr. Iyer wrote 418 Medicare Part D claims for 99 patients. 91% of them were for generic drugs. CMS names the drug for 214 of them, across 10 drugs with 11 or more claims each, at $10,483 in total drug cost. In 2023, CMS named 195 claims across 9 drugs.

Part D claims, 2024418
Drugs named by CMS10
Total drug cost$10,483
Part D patients99

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

  • Generic381 claims91%
  • Brand-name37 claims9%

Dr. Iyer'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. Iyer's Part D claims, 2024

  • Opioids9%37 of 418 claims
  • Antibiotics3%11 of 418 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: 1952024: 21410%

Drugs named by CMS: 10 in 2024, 9 in 2023.

See all prescribing by Dr. Iyer

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. Gopakumar Vasydeva Iyer scored 78 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 78 out of 100 for Dr. Iyer for performance year 2024, reported as part of a group. Dr. Iyer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Iyer as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Iyer's MIPS scores, performance year 2024

  • 78of 100Final score
  • 78.7of 100Quality
  • 40of 100Improvement Activities
  • 49of 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. Gopakumar Vasydeva Iyer has 16 publications on record

Dmand AI links 16 papers to Dr. Iyer, published from 2013 to 2025. 2025 was the busiest year, with 2. The most frequent topics are Antineoplastic Agents, Biomarkers, Tumor and Carcinoma, Transitional Cell. Dr. Iyer has published most often in Ann Oncol. Dr. Iyer's most frequent co-authors are Jonathan Eric Rosenberg, MD, Bernard H. Bochner, MD and James J. Harding, MD.

Papers16
Years published2013 to 2025

Dr. Iyer's papers by year, 2013 to 2025

Topics Dr. Iyer writes about most

  • Antineoplastic Agents
  • Biomarkers, Tumor
  • Carcinoma, Transitional Cell
  • DNA Damage
  • Drug Resistance, Neoplasm
  • High-Throughput Nucleotide Sequencing
  • Protein Kinase Inhibitors
  • Urinary Bladder Neoplasms

Dr. Iyer's most frequent co-authors

Recent publications by Dr. Iyer

See all 16 publications and co-authors

See who Dr. Iyer researches with

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

How network discovery works

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

Dr. Gopakumar Vasydeva Iyer has worked on 5 clinical trials

Dmand AI links Dr. Iyer to 5 clinical trials, 2 of them phase 1 studies. 5 are still active or recruiting. Conditions studied include Urinary Bladder Neoplasms, Carcinoma, Transitional Cell and Non-Muscle Invasive Bladder Neoplasms. Memorial Sloan Kettering Cancer Center sponsors the most, 2.

Clinical trials with Dr. Iyer by phase

  1. 2Phase 1: 2 trials
  2. 2Phase 2: 2 trials
  3. NonePhase 3: no trials
  4. NonePhase 4: no trials

Conditions in Dr. Iyer's trials

  • Urinary Bladder Neoplasms
  • Carcinoma, Transitional Cell
  • Non-Muscle Invasive Bladder Neoplasms
  • Tuberous Sclerosis 1
  • Tuberous Sclerosis 2

Investigators on the most trials with Dr. Iyer

Recent clinical trials with Dr. Iyer

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

Dr. Gopakumar Vasydeva Iyer received $70,717 in industry payments from 2016 to 2025

CMS Open Payments shows 61 general payments to Dr. Iyer from 15 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 78% of the total. EMD Serono, Inc. paid the most, $19,894. It also lists 14 research payments totaling $16,280 from 2024 to 2025.

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

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

$70.7Kin total
  • Consulting fees$55,36778%
  • Speaker and faculty fees$10,78715%
  • Honoraria$1,9923%
  • Food and beverage$1,8563%
  • Travel and lodging$7161%

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

Share is of all general payments to this clinician.

See all payments to Dr. Iyer

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

Dr. Gopakumar Vasydeva Iyer graduated from Vanderbilt University School Of Medicine

Dr. Iyer graduated from Vanderbilt University School Of Medicine in 2003.

  1. Medical schoolVanderbilt University School Of Medicine
  2. Board certified in medical oncologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Gopakumar Vasydeva Iyer accepts plans from 12 insurance carriers

Dr. Iyer is in network with 12 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Excellus BlueCross BlueShield
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • Elevance
  • HCSC
  • Aspirus Health Plan
  • +4 more carriersWith a free account

Plan types Dr. Iyer accepts, by number of carriers

  1. PPO8
  2. Medicare7
  3. POS5
  4. HMO4
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Gopakumar Vasydeva Iyer'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)Clinician Public Reporting: Overall MIPS Performance (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)
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. Gopakumar Vasydeva Iyer

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. Gopakumar Vasydeva Iyer's NPI number?

Dr. Gopakumar Vasydeva Iyer's NPI number is 1689792756. It was assigned on March 27, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Gopakumar Vasydeva Iyer?

Dr. Gopakumar Vasydeva Iyer is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Gopakumar Vasydeva Iyer practice?

Dr. Iyer practices at 1275 York Avenue, New York, NY 10065. Dr. Iyer's primary practice is Memorial Sloan Kettering Cancer Center in New York, New York, part of Memorial Sloan Kettering Cancer Center. Dmand AI also links Dr. Iyer to 1 medical group.

What is Dr. Gopakumar Vasydeva Iyer's medical license number?

Dr. Iyer holds New York license 247043, one of the licenses on file in 4 states.

Which states has Dr. Gopakumar Vasydeva Iyer been licensed in?

Dmand AI has state licenses on file for Dr. Iyer in New York (2007 to 2027), Florida (since 2021), New Jersey (2020 to 2025) and Michigan (2004 to 2011).

Which hospitals is Dr. Gopakumar Vasydeva Iyer affiliated with?

Dr. Iyer practices at Memorial Sloan Kettering Cancer Center in New York, New York.

What medical group is Dr. Gopakumar Vasydeva Iyer part of?

Dr. Iyer is linked to Memorial Sloan Kettering Cancer Center. Dmand AI links Dr. Iyer to 1 more medical group.

Does Dr. Gopakumar Vasydeva Iyer accept Medicare?

Yes. CMS data shows Dr. Iyer billed Medicare for 694 services in 2024, and Dr. Iyer accepts Medicare assignment.

Does Dr. Gopakumar Vasydeva Iyer offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Iyer as offering telehealth services.

What is Dr. Gopakumar Vasydeva Iyer's MIPS score?

Dr. Iyer's MIPS final score for performance year 2024 is 78 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Gopakumar Vasydeva Iyer see?

CMS counts 160 Medicare patients who saw Dr. Iyer in 2024, with an average age of 76.

Is Dr. Gopakumar Vasydeva Iyer board certified?

Yes. Dr. Iyer is board certified in medical oncology by the American Board of Internal Medicine.

What services does Dr. Gopakumar Vasydeva Iyer bill to Medicare?

In 2024, Dr. Iyer's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99205) and office visit, established patient (99215).

Where did Dr. Gopakumar Vasydeva Iyer go to medical school?

Dr. Iyer graduated from Vanderbilt University School Of Medicine in 2003.

What drugs does Dr. Gopakumar Vasydeva Iyer prescribe most?

In 2024 Medicare Part D data, Dr. Iyer's most prescribed drugs by claims were Ondansetron HCl, Dexamethasone and Oxycodone HCl.

Has Dr. Gopakumar Vasydeva Iyer received payments from drug or device companies?

CMS Open Payments shows $70,717 in general payments to Dr. Iyer from 15 companies from 2016 to 2025. The largest total came from EMD Serono, Inc.

How long has Dr. Gopakumar Vasydeva Iyer been practicing?

Dr. Iyer graduated from medical school in 2003, 23 years ago.

Does Dr. Gopakumar Vasydeva Iyer do research?

Dmand AI links 16 publications to Dr. Iyer, published from 2013 to 2025. Dr. Iyer has worked on 5 clinical trials.

Who does Dr. Gopakumar Vasydeva Iyer publish with?

Dr. Iyer's most frequent co-authors are Jonathan Eric Rosenberg, MD (7 shared papers), Bernard H. Bochner, MD (4 shared papers) and James J. Harding, MD (4 shared papers).

What insurance does Dr. Gopakumar Vasydeva Iyer accept?

Dr. Iyer is in network with 12 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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