Total Payments
$361,281
2024 Payments
$62,646
Companies
34
Transactions
570
Medicare Patients
576
Medicare Billing
$98,609
Payment Breakdown by Category
Other$173,264 (48.0%)
Education$76,466 (21.2%)
Consulting$61,083 (16.9%)
Travel$23,568 (6.5%)
Research$14,000 (3.9%)
Food & Beverage$12,886 (3.6%)
Gifts$13.57 (0.0%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $147,796 | 93 | 40.9% |
| Education | $76,466 | 26 | 21.2% |
| Consulting Fee | $61,083 | 28 | 16.9% |
| Compensation for serving as faculty or as a speaker for a medical education program | $25,468 | 29 | 7.0% |
| Travel and Lodging | $23,568 | 140 | 6.5% |
| Unspecified | $14,000 | 1 | 3.9% |
| Food and Beverage | $12,886 | 252 | 3.6% |
| Gift | $13.57 | 1 | 0.0% |
Payments by Type
General
$347,281
569 transactions
Research
$14,000
1 transactions
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| INTUITIVE SURGICAL, INC. | $94,048 | 107 | $0 (2024) |
| ABBVIE INC. | $82,857 | 171 | $0 (2024) |
| Covidien LP | $50,810 | 41 | $0 (2020) |
| Medtronic, Inc. | $50,168 | 51 | $0 (2024) |
| Merck Sharp & Dohme Corporation | $36,857 | 72 | $0 (2021) |
| Organon Llc | $28,609 | 45 | $0 (2024) |
| CooperSurgical, Inc. | $11,271 | 11 | $0 (2023) |
| GE HealthCare | $2,572 | 2 | $0 (2022) |
| Boston Scientific Corporation | $893.13 | 4 | $0 (2018) |
| Applied Medical Resources Corporation | $777.88 | 4 | $0 (2021) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $62,646 | 74 | INTUITIVE SURGICAL, INC. ($44,434) |
| 2023 | $75,734 | 105 | Intuitive Surgical, Inc. ($43,597) |
| 2022 | $32,790 | 58 | Organon LLC ($19,993) |
| 2021 | $9,113 | 26 | AbbVie Inc. ($4,833) |
| 2020 | $37,551 | 30 | Covidien LP ($18,984) |
| 2019 | $61,190 | 115 | AbbVie, Inc. ($44,929) |
| 2018 | $52,898 | 84 | Covidien LP ($25,025) |
| 2017 | $29,360 | 78 | Merck Sharp & Dohme Corporation ($16,031) |
All Payment Transactions
570 individual payment records from CMS Open Payments — Page 1 of 23
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/27/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Education | Cash or cash equivalent | $4,000.00 | General |
| Category: SURGERY | ||||||
| 12/27/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | Cash or cash equivalent | $150.00 | General |
| Category: SURGERY | ||||||
| 12/11/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Education | Cash or cash equivalent | $4,000.00 | General |
| Category: SURGERY | ||||||
| 12/11/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | Cash or cash equivalent | $300.00 | General |
| Category: SURGERY | ||||||
| 12/10/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | In-kind items and services | $20.84 | General |
| Category: SURGERY | ||||||
| 12/06/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $125.33 | General |
| Category: SURGERY | ||||||
| 12/06/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $109.02 | General |
| Category: SURGERY | ||||||
| 12/05/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $148.86 | General |
| Category: SURGERY | ||||||
| 12/03/2024 | Gynesonics, Inc. | SONATA SONOGRAPHY-GUIDED TRANSCERVICAL FIBROID ABLATION SYSTEM (Device) | Food and Beverage | In-kind items and services | $184.78 | General |
| Category: SONATA TRANSCERVICAL FIBROID ABLATION SYSTEM | ||||||
| 12/03/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | In-kind items and services | $12.60 | General |
| Category: SURGERY | ||||||
| 11/22/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Education | Cash or cash equivalent | $4,000.00 | General |
| Category: SURGERY | ||||||
| 11/22/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $588.61 | General |
| Category: SURGERY | ||||||
| 11/22/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | Cash or cash equivalent | $300.00 | General |
| Category: SURGERY | ||||||
| 11/21/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $472.84 | General |
| Category: SURGERY | ||||||
| 11/21/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $113.12 | General |
| Category: SURGERY | ||||||
| 10/30/2024 | Medtronic, Inc. | — | Consulting Fee | Cash or cash equivalent | $5,000.00 | General |
| 10/28/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $306.96 | General |
| Category: SURGERY | ||||||
| 10/28/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $30.00 | General |
| Category: SURGERY | ||||||
| 10/28/2024 | Gynesonics, Inc. | SONATA SONOGRAPHY-GUIDED TRANSCERVICAL FIBROID ABLATION SYSTEM (Device) | Food and Beverage | In-kind items and services | $8.76 | General |
| Category: SONATA TRANSCERVICAL FIBROID ABLATION SYSTEM | ||||||
| 10/28/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Travel and Lodging | In-kind items and services | $6.00 | General |
| Category: SURGERY | ||||||
| 09/29/2024 | Medtronic, Inc. | LIGASURE (Device) | Food and Beverage | In-kind items and services | $28.76 | General |
| Category: Vessel Sealing | ||||||
| 05/10/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Education | Cash or cash equivalent | $4,000.00 | General |
| Category: SURGERY | ||||||
| 05/10/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Food and Beverage | Cash or cash equivalent | $150.00 | General |
| Category: SURGERY | ||||||
| 05/07/2024 | Gynesonics, Inc. | SONATA SONOGRAPHY-GUIDED TRANSCERVICAL FIBROID ABLATION SYSTEM (Device) | Food and Beverage | In-kind items and services | $22.81 | General |
| Category: SONATA TRANSCERVICAL FIBROID ABLATION SYSTEM | ||||||
| 04/24/2024 | INTUITIVE SURGICAL, INC. | Da Vinci Surgical System (Device) | Education | Cash or cash equivalent | $4,000.00 | General |
| Category: SURGERY | ||||||
Research Studies & Clinical Trials
| Study Name | Company | Amount | Records |
|---|---|---|---|
| INVESTIGATOR SPONSORED RESEARCH | COVIDIEN LP | $14,000 | 1 |
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 10 | 185 | 281 | $99,084 | $32,577 |
| 2022 | 5 | 116 | 295 | $69,148 | $18,354 |
| 2021 | 9 | 162 | 343 | $104,558 | $36,779 |
| 2020 | 6 | 113 | 206 | $46,954 | $10,898 |
Total Patients
576
Total Services
1,125
Medicare Billing
$98,609
Procedure Codes
30
All Medicare Procedures & Services
30 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 58558 | Biopsy of lining of uterus and/or removal of polyp using an endoscope | Office | 2023 | 13 | 13 | $37,050 | $14,632 | 39.5% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 58 | 94 | $18,038 | $6,003 | 33.3% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2023 | 21 | 21 | $4,585 | $3,413 | 74.4% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 20 | 22 | $4,261 | $2,205 | 51.7% |
| 57160 | Fitting and insertion of vaginal support device | Office | 2023 | 12 | 34 | $13,600 | $1,994 | 14.7% |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Office | 2023 | 11 | 11 | $3,520 | $1,472 | 41.8% |
| 76830 | Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | Office | 2023 | 12 | 12 | $6,000 | $1,080 | 18.0% |
| 76856 | Complete ultrasound scan of pelvis | Office | 2023 | 12 | 12 | $6,000 | $979.14 | 16.3% |
| 57150 | Irrigation of vagina and/or application of drug to treat infection | Office | 2023 | 12 | 34 | $5,610 | $786.83 | 14.0% |
| J1885 | Injection, ketorolac tromethamine, per 15 mg | Office | 2023 | 14 | 28 | $420.00 | $12.59 | 3.0% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 53 | 127 | $24,322 | $8,347 | 34.3% |
| 57160 | Fitting and insertion of vaginal support device | Office | 2022 | 13 | 64 | $25,600 | $3,624 | 14.2% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 24 | 27 | $5,223 | $2,670 | 51.1% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2022 | 13 | 13 | $3,443 | $2,149 | 62.4% |
| 57150 | Irrigation of vagina and/or application of drug to treat infection | Office | 2022 | 13 | 64 | $10,560 | $1,564 | 14.8% |
| 58558 | Biopsy and/or removal of polyp of the uterus using an endoscope | Office | 2021 | 13 | 13 | $37,050 | $16,908 | 45.6% |
| 99213 | Established patient outpatient visit, total time 20-29 minutes | Office | 2021 | 58 | 131 | $25,020 | $8,876 | 35.5% |
| 57160 | Fitting and insertion of vaginal support device | Office | 2021 | 12 | 57 | $22,800 | $3,522 | 15.4% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Office | 2021 | 17 | 20 | $4,092 | $2,057 | 50.3% |
| 99205 | New patient outpatient visit, total time 60-74 minutes | Office | 2021 | 11 | 11 | $2,493 | $1,936 | 77.7% |
| 99215 | Established patient outpatient visit, total time 40-54 minutes | Office | 2021 | 11 | 13 | $2,633 | $1,929 | 73.3% |
| 57150 | Irrigation of vagina and/or application of drug to treat infection | Office | 2021 | 12 | 57 | $9,405 | $1,420 | 15.1% |
| 81025 | Urine pregnancy test | Office | 2021 | 15 | 15 | $675.00 | $120.54 | 17.9% |
| J1885 | Injection, ketorolac tromethamine, per 15 mg | Office | 2021 | 13 | 26 | $390.00 | $9.50 | 2.4% |
| 99213 | Established patient office or other outpatient visit, typically 15 minutes | Office | 2020 | 38 | 77 | $14,538 | $4,461 | 30.7% |
About Dr. Maria Teresa Tam, MD
Dr. Maria Teresa Tam, MD is a Obstetrics & Gynecology healthcare provider based in Chicago, Illinois. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 06/28/2006. The National Provider Identifier (NPI) number assigned to this provider is 1003843517.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Maria Teresa Tam, MD has received a total of $361,281 in payments from pharmaceutical and medical device companies, with $62,646 received in 2024. These payments were reported across 570 transactions from 34 companies. The most common payment nature is "Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program" ($147,796).
As a Medicare-enrolled provider, Tam has provided services to 576 Medicare beneficiaries, totaling 1,125 services with total Medicare billing of $98,609. Data is available for 4 years (2020–2023), covering 30 distinct procedure/service records.
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Practice Information
- Specialty Obstetrics & Gynecology
- Location Chicago, IL
- Active Since 06/28/2006
- Last Updated 08/24/2020
- Taxonomy Code 207V00000X
- Entity Type Individual
- Practice Solo Practitioner
- NPI Number 1003843517
Products in Payments
- Da Vinci Surgical System (Device) $94,048
- NEXPLANON (Drug) $62,626
- Orilissa (Drug) $44,122
- TRUCLEAR (Device) $35,126
- TruClear (Device) $26,737
- Lupron (Drug) $12,978
- Equipment (Device) $10,688
- HysteroLux (Device) $6,000
- ORIAHNN (Drug) $5,037
- ORILISSA (Drug) $3,238
- Nexplanon (Drug) $2,787
- Versana (Device) $1,012
- Auto Suture (Device) $800.00
- GENERAL UTERINE TISSUE REMOVAL (Device) $750.00
- GelPOINT V-Path (Device) $663.47
- SONATA SONOGRAPHY-GUIDED TRANSCERVICAL FIBROID ABLATION SYSTEM (Device) $374.61
- Advincula Delineator Uterine Manipulator (Device) $350.00
- Essure (Device) $350.00
- MYFEMBREE (Drug) $228.24
- LO LOESTRIN FE (Drug) $227.84
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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