Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

Covered recipient · General Payments record

CHRISTOPHER JAMES KONSTANTELOS

Allopathic & Osteopathic Physicians Internal Medicine

NPI
1952330243
CMS profile
88690
Location
CHICAGO, IL

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

General Payments · PY2019–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$570.61

27 records · 0 disputed

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $570.61 27

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
ViiV Healthcare Company $410.71 22
Gilead Sciences, Inc. $77.53 1
BIOTRONIK NRO, Inc. $42.12 2
Novo Nordisk AS $23.90 1
Lilly USA, LLC $16.35 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $798.64 8
PY2020 $99.00 1
PY2021 $304.97 3
PY2022 $257.57 3
PY2023 $186.17 2
PY2025 $570.61 27

Payment records · PY2025 (27)

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

Program year 2025 20192020202120222023 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Novo Nordisk Inc $23.90 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1188828224 CMS
ViiV Healthcare Company $7.25 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1189510482 CMS
ViiV Healthcare Company $7.88 11/14/2025 Food and Beverage No dispute reported 06/30/2026 1189542865 CMS
ViiV Healthcare Company $20.92 11/13/2025 Food and Beverage No dispute reported 06/30/2026 1189521978 CMS
ViiV Healthcare Company $10.10 10/31/2025 Food and Beverage No dispute reported 06/30/2026 1189583585 CMS
BIOTRONIK NRO, Inc. $20.58 10/22/2025 Food and Beverage No dispute reported 06/30/2026 1246328956 CMS
Gilead Sciences, Inc. $77.53 10/09/2025 Food and Beverage No dispute reported 06/30/2026 1234407744 CMS
ViiV Healthcare Company $8.19 09/30/2025 Food and Beverage No dispute reported 06/30/2026 1189605169 CMS
ViiV Healthcare Company $6.77 09/19/2025 Food and Beverage No dispute reported 06/30/2026 1189516852 CMS
ViiV Healthcare Company $3.81 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1189586807 CMS
BIOTRONIK NRO, Inc. $21.54 09/12/2025 Food and Beverage No dispute reported 06/30/2026 1246328886 CMS
ViiV Healthcare Company $78.15 09/11/2025 Food and Beverage No dispute reported 06/30/2026 1189510982 CMS
ViiV Healthcare Company $32.34 08/15/2025 Food and Beverage No dispute reported 06/30/2026 1189509666 CMS
ViiV Healthcare Company $1.01 08/05/2025 Food and Beverage No dispute reported 06/30/2026 1189536862 CMS
ViiV Healthcare Company $6.45 08/05/2025 Food and Beverage No dispute reported 06/30/2026 1189537808 CMS
ViiV Healthcare Company $33.03 07/21/2025 Food and Beverage No dispute reported 06/30/2026 1189606719 CMS
ViiV Healthcare Company $2.39 07/14/2025 Food and Beverage No dispute reported 06/30/2026 1189587423 CMS
ViiV Healthcare Company $34.35 07/11/2025 Food and Beverage No dispute reported 06/30/2026 1189579426 CMS
ViiV Healthcare Company $7.63 06/17/2025 Food and Beverage No dispute reported 06/30/2026 1189512668 CMS
ViiV Healthcare Company $87.69 06/12/2025 Food and Beverage No dispute reported 06/30/2026 1189522778 CMS
Lilly USA, LLC $16.35 05/27/2025 Food and Beverage No dispute reported 06/30/2026 1186554132 CMS
ViiV Healthcare Company $23.43 04/25/2025 Food and Beverage No dispute reported 06/30/2026 1189523182 CMS
ViiV Healthcare Company $6.59 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1189562646 CMS
ViiV Healthcare Company $7.28 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1189624662 CMS
ViiV Healthcare Company $2.45 03/22/2025 Food and Beverage No dispute reported 06/30/2026 1189516028 CMS
ViiV Healthcare Company $4.54 03/21/2025 Food and Beverage No dispute reported 06/30/2026 1189526236 CMS
ViiV Healthcare Company $18.46 03/07/2025 Food and Beverage No dispute reported 06/30/2026 1189625428 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2025
Source files
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.

Cite this record.

Plain
CHRISTOPHER JAMES KONSTANTELOS, NPI 1952330243. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1952330243.
APA 7
IndustryPayments. (2026). CHRISTOPHER JAMES KONSTANTELOS, NPI 1952330243 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1952330243
Bluebook
CHRISTOPHER JAMES KONSTANTELOS, NPI 1952330243, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1952330243.

Source: Centers for Medicare & Medicaid Services, Open Payments.