Mark Alan Chastain, MD
NPI 1790756138ActiveIndividual· Dermatology· Marietta, GA
Dermatology (MD) with Aqua Dermatology of Georgia PC, practicing in Marietta, Georgia. 1,350 Medicare patients in 2024, $1,598,544 paid; all of their 3,177 Part D prescriptions were generic. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $1,137 in all, mostly speaking and faculty fees.
Overview
| NPI | 1790756138 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 1, 2006 |
| Last updated in NPPES | Jun 12, 2020 |
| Certified by provider | Jun 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 048995 | GA |
| Dermatology, MOHS-Micrographic Surgery | 207ND0101X | 048995 | 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 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 - Micrographic Dermatologic Surgery (Mds) (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,350 |
|---|---|
| Services billed | 7,034 across 111 procedure codes |
| Paid by Medicare | $1,598,544 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,177 · 3,195 30-day fills |
|---|---|
| Patients | 1,650 |
| Total drug cost | $31,258 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Micrographic Dermatologic Surgery (Mds) |
| Secondary specialties | Dermatology |
Medical group
- Aqua Dermatology of Georgia PCMarietta, GA · 58 clinicians
Industry payments (Open Payments)
- 2025$1,137 · 24 payments from 11 companies
- 2024$1,351 · 35 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $786.04 | 11 |
| Regeneron Healthcare Solutions, Inc. | $98.35 | 1 |
| Genzyme Corporation | $49.98 | 1 |
| Pfizer Inc. | $41.85 | 2 |
| Mayne Pharma Commercial LLC | $35.29 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$693.40 · 7 payments
- Food and Beverage$345.45 · 16 payments
- Education$98.35 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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