Maria Teresa Tam, MD
NPI 1003843517ActiveIndividual· Obstetrics & Gynecology· Chicago, IL
Obstetrics & Gynecology (MD) with Thorek Memorial Hospital, practicing in Chicago, Illinois. 82 Medicare patients in 2024, $28,187 paid; nearly all of their 54 Part D prescriptions were generic (93%). Intuitive Surgical, Inc. was the largest of 9 companies reporting payments in 2025, $98,696 in all, mostly education. Lists Thorek Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1003843517 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 28, 2006 |
| Last updated in NPPES | Aug 24, 2020 |
| Certified by provider | Aug 24, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 036093565 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 82 |
|---|---|
| Services billed | 265 across 24 procedure codes |
| Paid by Medicare | $28,187 |
Part D prescriptions in 2024
| Prescriptions (claims) | 54 · 96 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $933.62 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- Thorek Memorial HospitalChicago, IL · 50 clinicians
Hospital affiliation
- Thorek Memorial HospitalChicago, IL
Industry payments (Open Payments)
- 2025$98,696 · 123 payments from 9 companies
- 2024$62,660 · 75 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $74,939 | 83 |
| Medtronic, Inc. | $21,826 | 28 |
| Organon LLC | $1,602 | 2 |
| Pacira Pharmaceuticals Incorporated | $149.33 | 2 |
| Abbvie Inc. | $54.46 | 2 |
What the 2025 payments were for
- Education$54,600 · 16 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$24,000 · 6 payments
- Travel and Lodging$14,492 · 63 payments
- Food and Beverage$4,002 · 36 payments
- Compensation for serving as faculty or as a speaker for a medical education program$1,602 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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