Maria M. Mercado, MD

Medicare activity in 2024

Official CMS public-use data for Maria M. Mercado, 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)5,400 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)363 services
3. Injection of drug or substance under skin or into muscle (96372)131 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)111 services
5. 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)85 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 pressure67%
• Osteoporosis51%
• Arthritis46%
• Diabetes33%
• Ischemic heart disease23%

Hospitals where Maria M. Mercado works

Medicare's Facility Affiliation Data lists Maria M. Mercado 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.

• Overlake Hospital Medical Center & ClinicsBellevue, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500051

Practice locations

Addresses where Maria M. Mercado is enrolled with Medicare (CMS data updated October 2, 2026).

• 1601 Precision Park LnSan Diego, CA 92173

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Diego

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

• Christine M. Wang, MD
• Homa Saadati, MD
• Nicholas Dembitsky, MD
• Saniya S. Malik, MD
• Zehui Tan, MD
• Shreya P. Chandra, MD
• Juliana M. Da Silva, MD
• Edward Cladera, MD

All internal medicine doctors in San Diego →

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