Aziz K. Valika, MD

Medicare activity in 2024

Official CMS public-use data for Aziz K. Valika, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)589 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)311 services
3. 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)268 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)257 services
5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)223 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%
• Chronic kidney disease75%
• Diabetes68%
• Heart failure60%
• Ischemic heart disease51%

Hospitals where Aziz K. Valika works

Medicare's Facility Affiliation Data lists Aziz K. Valika 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.

• Contra Costa Regional Medical CenterMartinez, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050276
• John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180
• Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523

Practice locations

Addresses where Aziz K. Valika is enrolled with Medicare (CMS data updated October 2, 2026).

• 110 Tampico, Suite 220Walnut Creek, CA 94598 (925) 944‑0351

Group practices

Medicare enrollment lists Aziz K. Valika as a member of this group (CMS data updated October 2, 2026).

• West Coast Kidney56 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in California →

Other nephrologists in Walnut Creek

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

• Chenyin He, MD
• Andrew Lin, MD
• Michael J. Ajuria, MD
• Zita J. Shiue, MD
• Edward T. Kim, MD
• Jason K. Law, MD
• Elizabeth M. Wrone, MD
• Mario P. Curzi, MD

All nephrologists in Walnut Creek →

Other clinicians in West Coast Kidney

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

• Jeanie J. Ahn, MD
• Tanvi Rege, MD
• Chenyin He, MD
• Mario P. Curzi, MD
• Zita J. Shiue, MD
• Melinda L. Aquino, MD

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