Total Payments
$4,183
2024 Payments
$1,237
Companies
28
Transactions
155
Medicare Patients
8,860
Medicare Billing
$1.6M
Payment Breakdown by Category
Food & Beverage$4,073 (97.4%)
Education$109.90 (2.6%)
Other$0.00 (0.0%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Food and Beverage | $4,073 | 152 | 97.4% |
| Education | $109.90 | 3 | 2.6% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Harrow Eye, LLC | $714.34 | 4 | $0 (2024) |
| Alcon Vision LLC | $648.57 | 34 | $0 (2024) |
| Novartis Pharmaceuticals Corporation | $398.08 | 20 | $0 (2022) |
| Mallinckrodt Hospital Products Inc. | $269.66 | 6 | $0 (2024) |
| Johnson & Johnson Surgical Vision, Inc. | $254.89 | 10 | $0 (2024) |
| SUN PHARMACEUTICAL INDUSTRIES INC. | $248.50 | 12 | $0 (2021) |
| Glaukos Corporation | $227.98 | 3 | $0 (2024) |
| Bausch & Lomb, a division of Bausch Health US, LLC | $217.88 | 11 | $0 (2021) |
| ABBVIE INC. | $215.55 | 6 | $0 (2024) |
| Ocular Therapeutix, Inc. | $144.55 | 8 | $0 (2024) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $1,237 | 23 | Harrow Eye, LLC ($478.44) |
| 2023 | $674.55 | 18 | Harrow Eye, LLC ($235.90) |
| 2022 | $341.40 | 20 | Alcon Vision LLC ($128.43) |
| 2021 | $366.16 | 19 | Bausch & Lomb, a division of Bausch Health US, LLC ($86.70) |
| 2020 | $294.88 | 13 | Alcon Vision LLC ($98.65) |
| 2019 | $568.74 | 28 | Alcon Vision LLC ($226.46) |
| 2018 | $331.22 | 16 | Novartis Pharmaceuticals Corporation ($102.06) |
| 2017 | $368.99 | 18 | Novartis Pharmaceuticals Corporation ($119.27) |
All Payment Transactions
155 individual payment records from CMS Open Payments — Page 1 of 7
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 11/12/2024 | Ocular Therapeutix, Inc. | DEXTENZA (Drug) | Food and Beverage | In-kind items and services | $20.67 | General |
| Category: Corticosteroid intracanalicular insert | ||||||
| 11/11/2024 | Bausch & Lomb Americas Inc. | VYZULTA (Drug) | Food and Beverage | In-kind items and services | $22.42 | General |
| Category: Ophthalmology | ||||||
| 10/25/2024 | Glaukos Corporation | iDose (Device) | Food and Beverage | Cash or cash equivalent | $23.27 | General |
| Category: Glaucoma | ||||||
| 10/15/2024 | Bausch & Lomb Americas Inc. | TOTALVISC (Device) | Food and Beverage | In-kind items and services | $22.03 | General |
| Category: Ophthalmology | ||||||
| 10/15/2024 | Glaukos Corporation | iDose (Device) | Food and Beverage | Cash or cash equivalent | $13.99 | General |
| Category: Glaucoma | ||||||
| 10/02/2024 | Ocular Therapeutix, Inc. | DEXTENZA (Drug) | Food and Beverage | In-kind items and services | $19.18 | General |
| Category: Corticosteroid intracanalicular insert | ||||||
| 09/18/2024 | Mallinckrodt Hospital Products Inc. | ACTHAR (Biological) | Food and Beverage | In-kind items and services | $34.99 | General |
| Category: IMMUNOLOGY | ||||||
| 08/07/2024 | Harrow Eye, LLC | IHEEZO (Drug) | Food and Beverage | In-kind items and services | $229.26 | General |
| Category: OPTOMETRY | ||||||
| 07/25/2024 | ABBVIE INC. | DURYSTA (Drug) | Food and Beverage | In-kind items and services | $14.23 | General |
| Category: EYE CARE | ||||||
| 07/02/2024 | Johnson & Johnson Surgical Vision, Inc. | VERITAS Vision System (Device), Tecnis Simplicity | Food and Beverage | In-kind items and services | $25.24 | General |
| Category: Optics | ||||||
| 07/01/2024 | Johnson & Johnson Surgical Vision, Inc. | VERITAS Vision System (Device), Healon Duet Pro, Tecnis IOL | Food and Beverage | In-kind items and services | $28.00 | General |
| Category: Optics | ||||||
| 06/11/2024 | Alcon Vision LLC | HYDRUS Microstent (Device) | Food and Beverage | In-kind items and services | $22.60 | General |
| Category: Ophthalmology | ||||||
| 04/06/2024 | Glaukos Corporation | iStent Trabecular Micro-Bypass System Model iS3 (Device) | Food and Beverage | Cash or cash equivalent | $190.72 | General |
| Category: Glaucoma | ||||||
| 03/28/2024 | Tarsus Pharmaceuticals, Inc. | XDEMVY (Drug) | Food and Beverage | In-kind items and services | $28.67 | General |
| Category: DEMODEX BLEPHARITIS | ||||||
| 03/15/2024 | ABBVIE INC. | DURYSTA (Drug) | Food and Beverage | In-kind items and services | $33.67 | General |
| Category: EYE CARE | ||||||
| 03/12/2024 | Mallinckrodt Hospital Products Inc. | ACTHAR (Biological) | Food and Beverage | In-kind items and services | $34.99 | General |
| Category: IMMUNOLOGY | ||||||
| 03/12/2024 | Amgen Inc. | TEPEZZA (Biological) | Food and Beverage | In-kind items and services | $18.51 | General |
| Category: Inflammation/Rare Disease | ||||||
| 03/06/2024 | Dompe US, Inc. | OXERVATE (Drug) | Food and Beverage | In-kind items and services | $25.90 | General |
| Category: SOLUTION/ DROPS | ||||||
| 02/26/2024 | Johnson & Johnson Surgical Vision, Inc. | LIPIFLOW SYSTEM ACTIVATOR II (DISPOSABLE (Device) | Food and Beverage | In-kind items and services | $31.64 | General |
| 02/23/2024 | Alcon Vision LLC | Wavelight Refractive Suite (Device) | Food and Beverage | In-kind items and services | $16.83 | General |
| Category: Ophthalmology | ||||||
| 02/16/2024 | Alcon Vision LLC | Clareon (Device) | Food and Beverage | In-kind items and services | $18.74 | General |
| Category: Ophthalmology | ||||||
| 01/22/2024 | Harrow Eye, LLC | IHEEZO (Drug) | Food and Beverage | In-kind items and services | $249.18 | General |
| Category: OPTOMETRY | ||||||
| 01/17/2024 | Mallinckrodt Hospital Products Inc. | ACTHAR (Biological) | Food and Beverage | In-kind items and services | $112.50 | General |
| Category: IMMUNOLOGY | ||||||
| 12/18/2023 | Harrow Eye, LLC | IHEEZO (Drug) | Food and Beverage | In-kind items and services | $137.94 | General |
| Category: OPTOMETRY | ||||||
| 12/12/2023 | Harrow Eye, LLC | IHEEZO (Drug) | Food and Beverage | In-kind items and services | $97.96 | General |
| Category: OPTOMETRY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 14 | 2,549 | 3,785 | $2.5M | $442,440 |
| 2022 | 14 | 2,209 | 3,341 | $2.2M | $416,430 |
| 2021 | 14 | 2,106 | 3,038 | $2.1M | $399,742 |
| 2020 | 18 | 1,996 | 2,627 | $1.6M | $320,224 |
Total Patients
8,860
Total Services
12,791
Medicare Billing
$1.6M
Procedure Codes
60
All Medicare Procedures & Services
60 procedure records from CMS Medicare Utilization — Page 1 of 3
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 66984 | Removal of cataract with insertion of prosthetic lens | Facility | 2023 | 336 | 597 | $1.4M | $243,571 | 17.0% |
| 92014 | Established patient complete exam of visual system | Office | 2023 | 473 | 500 | $169,540 | $42,450 | 25.0% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2023 | 257 | 257 | $115,650 | $29,203 | 25.3% |
| 66991 | Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Facility | 2023 | 30 | 54 | $129,600 | $26,772 | 20.7% |
| 66821 | Removal of recurring cataract in lens capsule using a laser | Office | 2023 | 70 | 70 | $85,600 | $23,813 | 27.8% |
| 92136 | Measurement of corneal curvature and depth of eye | Office | 2023 | 375 | 1,097 | $307,160 | $20,616 | 6.7% |
| 66982 | Complex removal of cataract with insertion of prosthetic lens | Facility | 2023 | 25 | 33 | $99,000 | $18,814 | 19.0% |
| 92134 | Imaging of retina | Office | 2023 | 448 | 467 | $51,370 | $13,445 | 26.2% |
| 92012 | Established patient problem focused exam of visual system | Office | 2023 | 103 | 144 | $34,560 | $8,822 | 25.5% |
| 92025 | Ct scan of cornea | Office | 2023 | 175 | 214 | $21,400 | $6,044 | 28.2% |
| 92004 | New patient complete exam of visual system | Office | 2023 | 25 | 25 | $10,050 | $2,764 | 27.5% |
| 68841 | Insertion of drug delivery implant into tear duct of eye | Facility | 2023 | 116 | 210 | $14,700 | $2,762 | 18.8% |
| 92083 | Exam of visual field with extended testing | Office | 2023 | 48 | 48 | $9,600 | $1,801 | 18.8% |
| 92133 | Imaging of optic nerve | Office | 2023 | 68 | 69 | $6,900 | $1,565 | 22.7% |
| 66984 | Removal of cataract with insertion of prosthetic lens | Facility | 2022 | 301 | 528 | $1.3M | $225,823 | 17.8% |
| 92014 | Established patient complete exam of visual system | Office | 2022 | 457 | 490 | $142,100 | $41,398 | 29.1% |
| 66991 | Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Facility | 2022 | 38 | 68 | $162,767 | $37,208 | 22.9% |
| 66821 | Removal of recurring cataract in lens capsule using a laser | Office | 2022 | 64 | 65 | $80,000 | $21,416 | 26.8% |
| 92136 | Measurement of corneal curvature and depth of eye | Office | 2022 | 345 | 1,011 | $283,080 | $21,216 | 7.5% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2022 | 166 | 166 | $74,700 | $20,030 | 26.8% |
| 92012 | Established patient problem focused exam of visual system | Office | 2022 | 128 | 203 | $48,720 | $12,236 | 25.1% |
| 66982 | Complex removal of cataract with insertion of prosthetic lens | Facility | 2022 | 14 | 18 | $54,000 | $10,711 | 19.8% |
| 92134 | Imaging of retina | Office | 2022 | 311 | 318 | $34,980 | $9,597 | 27.4% |
| 92004 | New patient complete exam of visual system | Office | 2022 | 102 | 102 | $41,004 | $8,846 | 21.6% |
| 68841 | Insertion of drug delivery implant into tear duct of eye | Facility | 2022 | 109 | 188 | $13,160 | $2,515 | 19.1% |
About Dr. John Warren, MD
Dr. John Warren, MD is a Ophthalmology healthcare provider based in Greenfield, Massachusetts. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 10/28/2005. The National Provider Identifier (NPI) number assigned to this provider is 1386634400.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. John Warren, MD has received a total of $4,183 in payments from pharmaceutical and medical device companies, with $1,237 received in 2024. These payments were reported across 155 transactions from 28 companies. The most common payment nature is "Food and Beverage" ($4,073).
As a Medicare-enrolled provider, Warren has provided services to 8,860 Medicare beneficiaries, totaling 12,791 services with total Medicare billing of $1.6M. Data is available for 4 years (2020–2023), covering 60 distinct procedure/service records.
Ad
Practice Information
- Specialty Ophthalmology
- Location Greenfield, MA
- Active Since 10/28/2005
- Last Updated 03/07/2023
- Taxonomy Code 207W00000X
- Entity Type Individual
- NPI Number 1386634400
Products in Payments
- IHEEZO (Drug) $714.34
- DURYSTA (Drug) $295.45
- ACTHAR (Biological) $293.55
- XIIDRA (Drug) $209.76
- iStent Trabecular Micro-Bypass System Model iS3 (Device) $190.72
- Clareon (Device) $147.20
- TEPEZZA (Drug) $140.87
- ORA (Device) $110.68
- Omidria (Drug) $105.90
- DEXTENZA (Drug) $104.80
- LOTEMAX SM (Drug) $103.16
- PROLENSA (Drug) $99.71
- Tecnis Multifocal Family of 1-piece IOLS (Device) $71.86
- BromSite (bromfenac ophthalmic solution) 0.075% (Drug) $62.45
- VYZULTA (Drug) $62.20
- AcrySof IQ PanOptix (Device) $61.65
- TRAVATAN Z (Drug) $61.03
- Bromsite (Drug) $53.49
- ARGOS (Device) $53.47
- VERITAS Vision System (Device) $53.24
Explore
Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
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