Quick answers
- Does Mary A. Ambach accept Medicare assignment?
- Yes. Medicare's clinician data says Mary A. Ambach accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mary A. Ambach see?
- In 2024, CMS data shows 160 Original Medicare patients and 582 services for Mary A. Ambach. This counts Original Medicare only and measures volume, not quality.
- What is Mary A. Ambach's NPI number?
- 1083769566. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mary A. Ambach, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 160 |
|---|---|
| Services billed to Medicare | 582 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)122 services
- Complete ultrasound scan of joint (76881)103 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)96 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)40 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)27 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Arthritis75%
- High cholesterol69%
- High blood pressure49%
- Ischemic heart disease30%
- Osteoporosis19%
- Anxiety17%
Practice locations
Addresses where Mary A. Ambach is enrolled with Medicare (CMS data updated October 2, 2026).
- 285 N El Camino Real, Suite 110Encinitas, CA 92024 (858) 225‑1922
Specialties
Find other Physical Medicine and Rehabilitation doctors in California →
Other rehabilitation doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083769566 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians