Reza Allamehzadeh, MD

Medicare activity in 2024

Official CMS public-use data for Reza Allamehzadeh, 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)3,180 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)2,094 services
3. Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)2,075 services
4. Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)1,402 services
5. Insertion of needle into vein for collection of blood sample (36415)922 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 cholesterol75%
• Arthritis55%
• Diabetes50%
• Anxiety41%
• Ischemic heart disease36%

Hospitals where Reza Allamehzadeh works

Medicare's Facility Affiliation Data lists Reza Allamehzadeh at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603
• Providence Mission HospitalMission Viejo, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050567

Practice locations

Addresses where Reza Allamehzadeh is enrolled with Medicare (CMS data updated October 2, 2026).

• 25982 Pala, Suite 170Mission Viejo, CA 92691 (949) 581‑2002

Specialties

• Internal Medicineprimary
• Nephrologyalso

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Mission Viejo

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

• Huan C. Guu, MD
• Yolanda Zhang, DO
• Ryan B. Tran, MD
• Jae Choi, MD
• Farnoosh Farshidi, MD
• Maria L. Savitt, MD
• Swathy Reddy, MD
• Yasaman Demehri, MD

All internal medicine doctors in Mission Viejo →

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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians