Melissa Nichole Holtz, MD
NPI 1427254002ActiveIndividual· Obstetrics & Gynecology· Sioux City, IA
Obstetrics & Gynecology (MD) in Sioux City, Iowa, trained at Medical College of Wisconsin (class of 2007). 31 Medicare patients in 2024, $3,767 paid; nearly all of their 67 Part D prescriptions were generic (90%). Astellas Pharma US Inc was the largest of 6 companies reporting payments in 2025, $200.51 in all, mostly food and beverage.
Overview
| NPI | 1427254002 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2007 |
| Last updated in NPPES | Oct 18, 2022 |
| Certified by provider | Oct 18, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 39393 | IA |
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 (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 83 across 23 procedure codes |
| Paid by Medicare | $3,767 |
Part D prescriptions in 2024
| Prescriptions (claims) | 67 · 82 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $3,178 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Obstetrics/Gynecology |
Medical groups
- Siouxland Community Health CenterSioux City, IA · 11 clinicians
- Siouxland Obstetrics and Gynecology PCSioux City, IA · 6 clinicians
Hospital affiliation
- St Lukes Regional Medical CenterSioux City, IA
Industry payments (Open Payments)
- 2025$200.51 · 10 payments from 6 companies
- 2024$264.93 · 14 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $83.86 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $27.66 | 1 |
| Biogen, Inc. | $27.31 | 1 |
| Octapharma USA, Inc. | $24.47 | 1 |
| Abbvie Inc. | $18.89 | 1 |
What the 2025 payments were for
- Food and Beverage$200.51 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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