Mark Adam Watson, D.O.
NPI 1548554157ActiveIndividual· Family Medicine· Berwyn, IL
Family Medicine (D.O.) with Natarajan Medical Group of Illinois PC, practicing in Berwyn, Illinois. 249 Medicare patients in 2024, $131,248 paid; nearly all of their 62 Part D prescriptions were generic (92%). Janssen Pharmaceuticals, Inc reported $24.85 in payments in 2024, mostly food and beverage. Lists Swedish Hospital as a hospital affiliation.
Overview
| NPI | 1548554157 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2011 |
| Last updated in NPPES | Jan 10, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 125-059143 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 249 |
|---|---|
| Services billed | 1,645 across 13 procedure codes |
| Paid by Medicare | $131,248 |
Part D prescriptions in 2024
| Prescriptions (claims) | 62 · 62 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $2,620 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Natarajan Medical Group of Illinois PCRosemont, IL · 16 clinicians
Hospital affiliation
- Swedish HospitalChicago, IL
Other facilities
- Accentcare Hospice & Palliative Care of IllinoisHospice · Rosemont, IL
Industry payments (Open Payments)
- 2024$24.85 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Janssen Pharmaceuticals, Inc | $24.85 | 1 |
What the 2024 payments were for
- Food and Beverage$24.85 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 105 family medicine physicians in Berwyn · All family medicine physicians in Illinois