Song Zang, MD
NPI 1821203233ActiveIndividual· Internal Medicine, Rheumatology· Joplin, MO
Internal Medicine, Rheumatology (MD) with Freeman-Oak Hill Health System and 1 other group, practicing in Joplin, Missouri. Their prescriptions cost Medicare Part D more than their services did: $2,312,998 for 8,851 claims, against $239,345 paid for services in 2024. Paratek Pharmaceuticals, Inc. was the largest of 13 companies reporting payments in 2025, $915.46 in all, mostly food and beverage. Lists Baptist Health - Fort Smith and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1821203233 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2007 |
| Last updated in NPPES | Mar 9, 2026 |
| Certified by provider | Mar 9, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 2025052143 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (AR); Practitioner - Rheumatology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 550 |
|---|---|
| Services billed | 16,328 across 66 procedure codes |
| Paid by Medicare | $239,345 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,851 · 12,454 30-day fills |
|---|---|
| Patients | 1,274 |
| Total drug cost | $2,312,998 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Rheumatology |
Medical groups
- Freeman-Oak Hill Health SystemJoplin, MO · 394 clinicians
- Danny Silver MD PLLCFort Smith, AR · 4 clinicians
Hospital affiliations
- Baptist Health - Fort SmithFort Smith, AR
- Freeman Health System - Freeman WestJoplin, MO
- Labette HealthParsons, KS
Industry payments (Open Payments)
- 2025$915.46 · 50 payments from 13 companies
- 2024$1,468 · 74 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Paratek Pharmaceuticals, Inc. | $189.83 | 9 |
| Amgen Inc. | $178.33 | 14 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $111.07 | 5 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $92.75 | 5 |
| Pfizer Inc. | $81.37 | 4 |
What the 2025 payments were for
- Food and Beverage$915.46 · 50 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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