Quick answers
- Does Lydie D. Francillon accept Medicare assignment?
- Yes. Medicare's clinician data says Lydie D. Francillon 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 Lydie D. Francillon see?
- In 2024, CMS data shows 227 Original Medicare patients and 421 services for Lydie D. Francillon. This counts Original Medicare only and measures volume, not quality.
- What is Lydie D. Francillon's NPI number?
- 1720647381. 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 Lydie D. Francillon, 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 | 227 |
|---|---|
| Services billed to Medicare | 421 |
| Different services or procedures | 38 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)185 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)80 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)41 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)16 services
- Automated urinalysis test (81003)15 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).
- High blood pressure75%
- High cholesterol74%
- Arthritis57%
- Diabetes35%
- Depression25%
- Ischemic heart disease24%
Practice locations
Addresses where Lydie D. Francillon is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Phillips DrSausalito, CA 94965 (415) 339‑8813
Group practices
Medicare enrollment lists Lydie D. Francillon as a member of this group (CMS data updated October 2, 2026).
- Marin City Health and Wellness Center10 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Marin City Health and Wellness Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720647381 |
| 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