Dr. Catherine A. Ramsay, MD
Dermatology (Dermatology Physician)
- Medicare participating
Medicare and federal program status
Opted out of Medicare from January 1, 2026 through January 1, 2028. Medicare does not pay for this clinician’s services: patients with Medicare sign a private contract and pay the clinician directly. They can still order tests and refer Medicare patients to other providers.
Source: CMS Medicare Opt Out Affidavits (record last updated October 21, 2026). Opting out is a legal choice many clinicians make, often to run a cash or concierge practice.
At a glance
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 333
Licensed in California since 1996, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Dermatology Physician primary
CA license A061269 (first issued 1996; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare patients and services
- Medicare patients, 2024
- 333
- Services billed
- 4,072
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | 622 | 119 |
| Ultrasonic guidance for placement of radiation therapy fields | 429 | 23 |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 420 | 21 |
| Superficial and/or low voltage radiation treatment delivery | 410 | 21 |
| Established patient office or other outpatient visit, 20-29 minutes | 277 | 181 |
| Destruction of precancer skin growth, 1 growth | 220 | 168 |
| New patient office or other outpatient visit, 30-44 minutes | 146 | 146 |
| Radiation treatment management, 5 treatment sessions | 86 | 22 |
| Established patient office or other outpatient visit, 10-19 minutes | 73 | 61 |
| Destruction of skin growth, 1-14 growths | 63 | 49 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $52.45 in total to this clinician.
| Leo Pharma Inc. | $52.45 |
|---|
| Food and Beverage | $52.45 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.