Natalia M. Grob, MD
NPI 1053622639ActiveIndividual· Obstetrics & Gynecology, Reproductive Endocrinology· Denver, CO
Opted out of Medicare from July 2018 to July 2028. Obstetrics & Gynecology, Reproductive Endocrinology (MD) in Denver, Colorado, licensed in CO, IL, MN and WA and other states, with an NPI issued in June 2010. Organon LLC reported $24.69 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1053622639 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 29, 2010 |
| Last updated in NPPES | May 14, 2024 |
| Certified by provider | May 14, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Reproductive Endocrinology Primary | 207VE0102X | CDRH.0053437 | CO |
| Obstetrics & Gynecology, Reproductive Endocrinology | 207VE0102X | 036167910 | IL |
| Obstetrics & Gynecology, Reproductive Endocrinology | 207VE0102X | 76253 | MN |
| Obstetrics & Gynecology, Reproductive Endocrinology | 207VE0102X | MD61490460 | WA |
| Obstetrics & Gynecology, Reproductive Endocrinology | 207VE0102X | 36094 | NE |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jul 25, 2018 – Jul 25, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Industry payments (Open Payments)
- 2025$24.69 · 1 payment from 1 company
- 2024$154.46 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organon LLC | $24.69 | 1 |
What the 2025 payments were for
- Food and Beverage$24.69 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Obstetrics & Gynecology, Reproductive Endocrinology providers in Denver
- 1225909773
- 1316189152
- 1275117269
- 1487013587
- 1750418182
- 1104089382
- 1932114402
- 1285635193
- 1194782250
All Obstetrics & Gynecology, Reproductive Endocrinology providers in Colorado →