Maria Diaz, MD

Internal Medicine
Rated 4.00 out of 5 stars
(24 ratings)
  • Washington Heights 4405 Broadway, New York, NY 10040
  • Speaks English, French, Spanish, and Portuguese
  • Accepts most Medicare plans
    View insurance accepted

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Maria Diaz, MD

Meet Maria Diaz, MD

Maria Diaz is a Internist at our Washington Heights primary care doctor’s office. Dr. Diaz is excited to get to know you and provide the personalized care you deserve. Our primary care providers, and supporting care team, develop preventive care plans to help you achieve your physical and mental health goals. Get the care you deserve. Schedule an in-person, phone, or video visit today.

My education and background

Board certifications
  • American Board of Internal Medicine
Medical school
Universidad Central del Ecuador
Residency
NYC Health & Hospitals Woodhull
Languages spoken
English, French, Spanish, Portuguese
Gender
Female

What I treat

Specialties
  • Internal Medicine
Conditions
  • Asthma
  • Arteriosclerosis
  • Anemia
  • Osteoarthritis
  • Diabetes
  • Mental Health
  • Kidney Disease
  • Heart Disease
  • Skin, Hair, and Nails
  • Allergies
  • Cold and Flu

Insurance Accepted

Maria Diaz, MD accepts the following insurance. Check your coverage or call us at (888) 812-1183 to see if we accept your specific insurance.

Original Medicare

Maria Diaz, MD accepts Original Medicare Part A and Part B plans.

Medicare Supplement

Maria Diaz, MD accepts all Medicare Supplement Insurance (Medigap) plans.

Medicare Advantage

Maria Diaz, MD accepts most Medicare Advantage plans. Before your appointment, please confirm with your insurance company that your specific insurance plan is accepted.
View all plans

My Location

Washington Heights

Rated 4.45 out of 5 stars
View Location
The exterior of the Washington Heights primary care clinic in New York, New York.

Common questions

  • How do I become a patient of Maria Diaz?

    Call (888) 812-1183 to become a patient of Dr. Diaz at Oak Street Health. You can also stop by your nearest doctors office and clinics or fill out an appointment request form, and we'll be in touch.

  • What insurance does Maria Diaz accept?

    Dr. Diaz accepts all forms of Medicare, including Original Medicare Part B, select Medicare Advantage plans, Medicare Supplement or Medigap plans and Medicare-Medicaid Plans. Call us at (888) 812-1183 to see if we accept your specific insurance.

  • What is Maria Diaz's specialty?

    Dr. Diaz is a Internist. At Oak Street Health, all our providers specialize in primary care for adults on Medicare.

  • Where is Maria Diaz's office located?

    Dr. Diaz's primary office is at 4405 Broadway in New York, New York.

  • What languages does Maria Diaz speak?

    Dr. Diaz speaks English, French, Spanish, and Portuguese.

  • Who can become a patient of Maria Diaz?

    Our doctors specialize caring for anyone with Medicare, including Original Medicare Part B, select Medicare Advantage plans, Medicare Supplement or Medigap plans and Medicare-Medicaid Plans.

Reviews and ratings

Summary

Rated 4.00 out of 5 stars
(24 ratings)

The patient rating score is an average of all responses to an independent patient satisfaction survey administered by Qualtrics and patient feedback submitted via public review sites. All ratings and comments are displayed in their entirety.

5 star
17
4 star
0
3 star
2
2 star
0
1 star
5

Written reviews (19)

Rated 1 out of 5 stars
Apr 29, 2026
I encountered significant issues with Dr. Maria Diaz' communication style, as she repeatedly interrupted me and posed questions about my health and weight in a manner that was both sarcastic and condescending. Additionally, when reviewing my hospital discharge papers, Dr. Diaz evidenced confusion…
Rated 5 out of 5 stars
Feb 18, 2026
My experience with Dr. Diaz, is very positive and professional all the time.
Rated 5 out of 5 stars
Dec 11, 2025
Oak street is very good Maria Diaz done things I never saw my doctor do
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