Healthcare provider profile · identity verified

Subramanian Krishnan, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · MIDDLETOWN, CT · NPI 1528267358

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Subramanian Krishnan, MD received $75.52 in general payments during 2025 across 3 reported records.

E.R. Squibb & Sons, L.L.C. accounted for 39.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 581 claims for Eliquis by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 581 claims for Eliquis by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$75.52

3 reported records · 3 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $29.4839.0%12025
PFIZER INC. Unresolved — no canonical attribution shown $23.2530.8%12025
Abbott Laboratories Unresolved — no canonical attribution shown $22.7930.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$75.523

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
CAMZYOS
Normalized: camzyos
Drug E.R. Squibb & Sons, L.L.C. $29.48 1 2025
Source payment records
VYNDAQEL
Normalized: vyndaqel
Drug PFIZER INC. $23.25 1 2025
Source payment records
CARDIOMEMS
Normalized: cardiomems
Device Abbott Laboratories $22.79 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
581 165
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
581 165

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
EliquisApixaban581165
Metoprolol SuccinateMetoprolol Succinate307156
FurosemideFurosemide18783
Atorvastatin CalciumAtorvastatin Calcium16983
Rosuvastatin CalciumRosuvastatin Calcium15773
XareltoRivaroxaban12937
Amlodipine BesylateAmlodipine Besylate12760
LisinoprilLisinopril10954
EzetimibeEzetimibe10549
Diltiazem 24hr Er (Cd)Diltiazem Hcl8537
Metoprolol TartrateMetoprolol Tartrate8141
EntrestoSacubitril/Valsartan7819
ValsartanValsartan6728
CarvedilolCarvedilol6426
Amiodarone HclAmiodarone Hcl6321
Losartan PotassiumLosartan Potassium5827
Repatha SureclickEvolocumab5211
SpironolactoneSpironolactone5028
HydrochlorothiazideHydrochlorothiazide4422
BumetanideBumetanide3112
Doxazosin MesylateDoxazosin Mesylate3113
DigoxinDigoxin3011
Flecainide AcetateFlecainide Acetate30suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate30suppressed
NitroglycerinNitroglycerin2622
AtenololAtenolol20suppressed
Potassium ChloridePotassium Chloride2011
ClopidogrelClopidogrel Bisulfate1914
ChlorthalidoneChlorthalidone18suppressed
Praluent PenAlirocumab18suppressed
Hydralazine HclHydralazine Hcl17suppressed
Albuterol Sulfate HfaAlbuterol Sulfate16suppressed
Dilt-XrDiltiazem Hcl16suppressed
Pravastatin SodiumPravastatin Sodium16suppressed
TorsemideTorsemide15suppressed
Warfarin SodiumWarfarin Sodium15suppressed
Diltiazem HclDiltiazem Hcl14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil12suppressed
AmoxicillinAmoxicillin11suppressed
FenofibrateFenofibrate11suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide11suppressed
Midodrine HclMidodrine Hcl11suppressed
RamiprilRamipril11suppressed
SotalolSotalol Hcl11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $75.52 · 3 records E.R. Squibb & Sons, L.L.C. CAMZYOS, CARDIOMEMS, VYNDAQEL 2
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error