Quick answers
- Does Deina I. Stewart accept Medicare assignment?
- Yes. Medicare's clinician data says Deina I. Stewart 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 Deina I. Stewart see?
- In 2024, CMS data shows 182 Original Medicare patients and 875 services for Deina I. Stewart. This counts Original Medicare only and measures volume, not quality.
- What is Deina I. Stewart's NPI number?
- 1154491074. 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 Deina I. Stewart, 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 | 182 |
|---|---|
| Services billed to Medicare | 875 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)120 services
- Urinalysis, manual test (81002)33 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)31 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)25 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza (87428)18 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 pressure73%
- Arthritis49%
- Diabetes30%
- Chronic kidney disease22%
- Anxiety19%
Practice locations
Addresses where Deina I. Stewart is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 11333 Sepulveda BlvdMission Hills, CA 91345 (818) 365‑9531
- 19950 Rinaldi StPorter Ranch, CA 91326 (818) 403‑2400
- 26357 McBean PkwyValencia, CA 91355 (661) 222‑2600
- 26357 McBean Pkwy, Suite 390Santa Clarita, CA 91355 (661) 222‑2600
- 501 S Buena Vista StBurbank, CA 91505 (818) 847‑6049
Group practices
Medicare enrollment lists Deina I. Stewart as a member of this group (CMS data updated October 2, 2026).
- Providence Facey Medical Foundation385 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Mission Hills
Clinicians with the same Medicare primary specialty in Mission Hills, CA — not a recommendation.
Other clinicians in Providence Facey Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Graduation year | 2018 (8 years since chiropractic college) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154491074 |
| 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