Grace A. Montenegro, M.D.
NPI 1497948087ActiveIndividual· Colon & Rectal Surgery· Saint Louis, MO
Colon & Rectal Surgery (M.D.) with Ssm Health Care Group, practicing in Saint Louis, Missouri. 97 Medicare patients in 2024, $41,466 paid; nearly all of their 153 Part D prescriptions were generic (99%). Calyxo, Inc. was the largest of 4 companies reporting payments in 2025, $210.58 in all, mostly food and beverage. Lists Ssm Health Saint Louis University Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1497948087 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 27, 2007 |
| Last updated in NPPES | Feb 17, 2021 |
| Certified by provider | Feb 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | 2013017017 | MO |
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 - Colorectal Surgery (Proctology) (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 97 |
|---|---|
| Services billed | 248 across 55 procedure codes |
| Paid by Medicare | $41,466 |
Part D prescriptions in 2024
| Prescriptions (claims) | 153 · 157 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $1,089 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Colorectal Surgery (Proctology) |
Medical group
- Ssm Health Care GroupSaint Louis, MO · 940 clinicians
Hospital affiliations
- Ssm Health Saint Louis University HospitalSaint Louis, MO
- Ssm Health St Mary's Hospital - St LouisSaint Louis, MO
- Ssm St Clare Health CenterFenton, MO
Industry payments (Open Payments)
- 2025$210.58 · 4 payments from 4 companies
- 2024$11.16 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calyxo, Inc. | $140.05 | 1 |
| Medtronic, Inc. | $35.44 | 1 |
| Solventum Corporation | $22.40 | 1 |
| Intuitive Surgical, Inc. | $12.69 | 1 |
What the 2025 payments were for
- Food and Beverage$210.58 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 22 colorectal surgeons in Saint Louis · All colorectal surgeons in Missouri