Quick answers
- Does Marguerite J. Critelli accept Medicare assignment?
- Yes. Medicare's clinician data says Marguerite J. Critelli 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 Marguerite J. Critelli see?
- In 2024, CMS data shows 31 Original Medicare patients and 77 services for Marguerite J. Critelli. This counts Original Medicare only and measures volume, not quality.
- What is Marguerite J. Critelli's NPI number?
- 1902962954. 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 Marguerite J. Critelli, 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 | 31 |
|---|---|
| Services billed to Medicare | 77 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Telephone, internet, or electronic health record assessment and management with verbal and written report by consulting physician, 5-10 minutes (99446)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 cholesterol75%
- High blood pressure74%
- Anxiety48%
- Alzheimer's disease or dementia45%
Practice locations
Addresses where Marguerite J. Critelli is enrolled with Medicare (CMS data updated October 2, 2026).
- 2720 N Harbor Blvd, Suite 230Fullerton, CA 92835 (714) 879‑9936
- 300 James Way, Suite 140Pismo Beach, CA 93449 (805) 574‑1000
Group practices
Medicare enrollment lists Marguerite J. Critelli as a member of these groups (CMS data updated October 2, 2026).
- Dermatology Spa Med Inc8 clinicians in the group
- Advanced Skincare Physician Assistant Corporation Pac2 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Fullerton
Clinicians with the same Medicare primary specialty in Fullerton, CA — not a recommendation.
Other clinicians in Dermatology Spa Med Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902962954 |
| 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