Catherine Tinker Bittinger, PA-C
NPI 1174004113ActiveIndividual· Physician Assistant, Medical· Austell, GA
Physician Assistant, Medical (PA-C) with Wellstar Medical Group LLC, practicing in Austell, Georgia. Their prescriptions cost Medicare Part D more than their services did: $138,873 for 402 claims, against $16,109 paid for services in 2024. Pfizer Inc. was the largest of 32 companies reporting payments in 2025, $1,852 in all, mostly food and beverage. Lists Wellstar Cobb Medical Center as a hospital affiliation.
Overview
| NPI | 1174004113 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 28, 2018 |
| Last updated in NPPES | Mar 30, 2022 |
| Certified by provider | Mar 30, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 8981 | GA |
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 - Physician Assistant (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 188 |
|---|---|
| Services billed | 334 across 5 procedure codes |
| Paid by Medicare | $16,109 |
Part D prescriptions in 2024
| Prescriptions (claims) | 402 · 604 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $138,873 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Wellstar Medical Group LLCMarietta, GA · 3,093 clinicians
Hospital affiliation
- Wellstar Cobb Medical CenterAustell, GA
Industry payments (Open Payments)
- 2025$1,852 · 92 payments from 32 companies
- 2024$1,193 · 58 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $265.69 | 15 |
| Abbvie Inc. | $223.06 | 10 |
| Novartis Pharmaceuticals Corporation | $167.62 | 7 |
| Merck Sharp & Dohme LLC | $98.80 | 4 |
| Genentech USA, Inc. | $90.82 | 4 |
What the 2025 payments were for
- Food and Beverage$1,791 · 88 payments
- Education$61.07 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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