Quick answers
- Does Adina R. Gregor accept Medicare assignment?
- Yes. Medicare's clinician data says Adina R. Gregor 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 Adina R. Gregor see?
- In 2024, CMS data shows 406 Original Medicare patients and 803 services for Adina R. Gregor. This counts Original Medicare only and measures volume, not quality.
- What is Adina R. Gregor's NPI number?
- 1851806301. 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 Adina R. Gregor, 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 | 406 |
|---|---|
| Services billed to Medicare | 803 |
| Different services or procedures | 53 |
| 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)234 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)109 services
- Automated urinalysis test (81003)46 services
- Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen (87635)44 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)42 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 pressure65%
- Arthritis54%
- Osteoporosis27%
- Anxiety26%
- Ischemic heart disease24%
Practice locations
Addresses where Adina R. Gregor is enrolled with Medicare (CMS data updated October 2, 2026).
- 1801 Wilshire BlvdSanta Monica, CA 90403 (310) 319‑5098
- 475 E Avenida De Los Arboles, Suite BThousand Oaks, CA 91360 (818) 483‑0885
- 5825 Kanan RdAgoura Hills, CA 91301 (818) 483‑0775
Group practices
Medicare enrollment lists Adina R. Gregor as a member of these groups (CMS data updated October 2, 2026).
- Regents of the University of California Los Angeles84 clinicians in the group
- Agoura Hills Urgentocare PC14 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Other clinicians in Regents of the University of California Los Angeles
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851806301 |
| 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