Natalia R. Chavez Stewart, MD

Medicare activity in 2024

Official CMS public-use data for Natalia R. Chavez 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.

Most frequent services

1. Injection, denosumab, 1 mg (J0897)1,620 services
2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)662 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)445 services
4. 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)316 services
5. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)131 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%
• Arthritis75%
• High blood pressure73%
• Diabetes61%
• Osteoporosis34%
• Anxiety25%

Practice locations

Addresses where Natalia R. Chavez Stewart is enrolled with Medicare (CMS data updated October 2, 2026).

• 21832 Cactus AveRiverside, CA 92518
• 29798 Haun Rd, Suite 301Menifee, CA 92586 (951) 652‑5000
• 341 Magnolia Ave, Suite 206Corona, CA 92879 (951) 554‑5778

Group practices

Medicare enrollment lists Natalia R. Chavez Stewart as a member of these groups (CMS data updated October 2, 2026).

• Prohealth Partners, a Medical Group239 clinicians in the group
• Southland Arthrites and Osteoporosis Medical Center Inc6 clinicians in the group

Specialties

• Rheumatologyprimary
• Internal Medicinealso

Find other Rheumatology doctors in California →

Other rheumatologists in Riverside

Clinicians with the same Medicare primary specialty in Riverside, CA — not a recommendation.

• Asbat Hasan, MD
• Keith K. Colburn, MD
• Bradley Andersen, MD
• Naveen Raja, DO
• Amy C. Chang, MD
• Amal Mehta, MD
• Janki D. Trivedi, MD
• Nayef M. Kazzaz, MD

All rheumatologists in Riverside →

Other clinicians in Prohealth Partners, a Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Marcia A. Senteno, MD
• Tiane Dai, MD
• Lindsay A. Larson, DO
• Ronald S. Swerdloff, MD
• Jose L. Pantoja, MD
• Hiren Y. Patel, DO

Clinician information

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

1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
4. Medicare Care Compare — official Medicare tool to look up clinicians