Expertise in
2
conditions

Dr. Alejandro E. Diaz

Internal Medicine
Highland Hospital
1411 E 31st St, 
Oakland, CA 
Expertise in
2
conditions
Highland Hospital
1411 E 31st St, 
Oakland, CA 

Overview

Alejandro Diaz is a primary care provider, practicing in Internal Medicine in Oakland, California.

Dr. Diaz is highly rated in 2 conditions, according to our data. His clinical expertise encompasses Hepatitis, Hypertension, Maturity Onset Diabetes of the Young, and Type 2 Diabetes (T2D).

He is actively involved in clinical research, co-authoring 36 peer reviewed articles.

Specialties

Internal Medicine

Licenses

Internal Medicine in CA

Hospital Affiliations

Alameda Hospital
Highland Hospital

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Alignment Health Plan
  • MEDICARE MAPD
  • MEDICARE SNP
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
LA Care
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
SCAN Health Plan
  • INSURANCE PLAN
  • MEDICARE MAPD
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 8 Less Insurance Carriers -

Locations

Highland Hospital
1411 E 31st St, Oakland, CA 94602

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

35 Total Publications

Cohort Profile: The Youth Vascular Consortium.
Cohort Profile: The Youth Vascular Consortium.
Journal: Artery research
Published: January 21, 2026
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Frequently Asked Questions about Dr. Alejandro E. Diaz

How do I make an appointment with Dr. Alejandro E. Diaz?

You can book an appointment with Dr. Alejandro E. Diaz by calling their office at 510-437-4887. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Alejandro E. Diaz a top-rated expert for Hepatitis?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Alejandro E. Diaz is classified as an Advanced expert for Hepatitis, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Alejandro E. Diaz specialize in?

While Dr. Alejandro E. Diaz is a Internal Medicine, they have specific expertise in Hepatitis, Hypertension, and Maturity Onset Diabetes of the Young. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Internal Medicine.

Does Dr. Alejandro E. Diaz participate in research or clinical trials?

Yes. Dr. Alejandro E. Diaz has published 35 articles and abstracts on conditions like Hepatitis. You can view a list of Dr. Alejandro E. Diaz's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Alejandro E. Diaz accept my insurance?

Dr. Alejandro E. Diaz accepts most major insurance plans, including Aetna and Alignment Health Plan. We recommend calling the office directly at 510-437-4887 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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