Katharine Ball, M.D.
NPI 1801004650ActiveIndividual· Dermatology· Saratoga, CA
Dermatology (M.D.) in Saratoga, California, trained at Jefferson Medical College of Thomas Jefferson University (class of 2007). 1,115 Medicare patients in 2024, $733,805 paid; nearly all of their 801 Part D prescriptions were generic (97%). Regeneron Healthcare Solutions, Inc. was the largest of 12 companies reporting payments in 2025, $1,155 in all, mostly food and beverage.
Overview
| NPI | 1801004650 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 17, 2007 |
| Last updated in NPPES | Mar 7, 2024 |
| Certified by provider | Mar 7, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | A106522 | CA |
| Internal Medicine | 207R00000X | C7-0003735 | DE |
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) | Enrolled Practitioner - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,115 |
|---|---|
| Services billed | 7,672 across 106 procedure codes |
| Paid by Medicare | $733,805 |
Part D prescriptions in 2024
| Prescriptions (claims) | 801 · 951 30-day fills |
|---|---|
| Patients | 376 |
| Total drug cost | $44,693 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Dermatology |
| Secondary specialties | Micrographic Dermatologic Surgery (Mds) |
Medical groups
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
- Csi Medical GroupFullerton, CA · 111 clinicians
Industry payments (Open Payments)
- 2025$1,155 · 41 payments from 12 companies
- 2024$973.16 · 38 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $309.76 | 10 |
| Genzyme Corporation | $169.95 | 5 |
| Janssen Biotech, Inc. | $157.93 | 10 |
| Sun Pharmaceutical Industries Inc. | $155.83 | 1 |
| Abbvie Inc. | $83.25 | 3 |
What the 2025 payments were for
- Food and Beverage$1,083 · 40 payments
- Education$72.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records