24 Hr Emergency Room Near Houston | Post Oak ER – Open 24/7

Q: Do you accept walk-ins from Houston?

Yes — we’re open 24/7 and always welcome walk-in patients from across Houston.

Q: Is your ER near The Galleria?

Yes — Post Oak ER is located just off San Felipe St., near The Galleria and Uptown Park.

From unexpected chest pain to stubborn coughs or sudden headaches, Houston residents know they can count on Post Oak ER when every second matters. We regularly care for families and individuals across the city who want fast, expert emergency care — without the long hospital wait.

Common Symptoms We Treat for Houston Residents

At Post Oak ER, our board-certified physicians frequently treat:

Acute or persistent cough
Chest pain and tightness
Headaches and migraines
Pain or irritation in the throat
Fever and flu-like symptoms
Abdominal pain (including lower right side or epigastric pain)
Shortness of breath

Our in-house lab, imaging, and diagnostics help us evaluate and treat these symptoms with speed and accuracy.

Frequently Asked Questions

Do you accept walk-ins from Houston?

Yes — we’re open 24 hours a day and always ready for walk-ins. No appointment needed.

Do you treat shortness of breath and chest pain?

Absolutely. We provide immediate evaluation and treatment for respiratory and cardiac-related symptoms.

What insurance do you take for Houston patients?

We accept most major private plans, including Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Is your ER near The Galleria?

Yes — we’re located just off San Felipe St., very close to The Galleria and Uptown Park.

    
 
 
        
   allison wilkins 
 
 
 
   Trustindex verifies that the original source of the review is Google. Great location. Staff was attentive and kind!  Suffering from kidney stones and they took care of my pain
  
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   Cynthia Gonzalez 
 
 
 
   Trustindex verifies that the original source of the review is Google. Every one from the front desk, to the ma’s, nurses, doctors and techs were quite caring, understanding and were attentive to make sure I was comfortable and cozy. I honestly hate hospitals, or ER’s; Post Oak ER has changed my mind. I would gladly go back and will not hesitate to take any members of my family and friends. Thank you so much Post Oak ER. Keep up the great work!!! Sincerely, Cynthia Gonzalez
  
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   Brooke Lee 
 
 
 
   Trustindex verifies that the original source of the review is Google. They were very nice, took care of my problem. Relieved my pain. Easy process. And they were very kind.❤️
  
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   Miriael Holliday-Unzaga 
 
 
 
   Trustindex verifies that the original source of the review is Google. They gave the best care for me and my wife when we both had to go there. They were amazing and helpful. Made sure we both were comfortable.
  
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   S B 
 
 
 
   Trustindex verifies that the original source of the review is Google. Great staff and doctors quick results it a great place to go for emergency or health reasons.
  
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   Ayana Pratt 
 
 
 
   Trustindex verifies that the original source of the review is Google. I went in with chest pains and shortness of breath. I have insurance but it’s not in network. I live close by so I went to the nearest emergency room. I was greeted and made aware that I might have to pay self pay if the Dr deemed it not an emergency. After getting an ekg the Dr said it wasn’t an emergency and they proposed I pay over $1800 to be examined. The Dr said what do you have Medicaid, making an unfair assumption. I replied no I have Aetna insurance. I politely declined and had to go somewhere else. They were nice overall but why the outrageous charges!?
  
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   Soumaya Alissa 
 
 
 
   Trustindex verifies that the original source of the review is Google. Amazing staff, doctors, and care. Thank you for care and compassion!
  
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   Bryant Young 
 
 
 
   Trustindex verifies that the original source of the review is Google. Good experience, very professional Staff. Great Doctor . They payed close  attention  to me and ailment. Will definitely use them again if necessary.  :)
  
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  Google rating score: 4.7 of 5, 
based on 417 reviews

Why Houston Residents Trust Post Oak ER?

We’re open 24/7 — with no appointment needed and no wait times. Unlike busy hospital ERs, our freestanding emergency room delivers personalized care without the chaos. Patients across Houston, from Uptown to the Energy Corridor, appreciate our calm environment, experienced team, and fast results. We’re located right off San Felipe St. near The Galleria and Uptown Park — making us easy to reach from almost anywhere in the city.

Getting Here from Houston

Whether you’re in Westchase, Midtown, or the Heights, getting to Post Oak ER is simple. We’re centrally located near major Houston routes like I‑610 and San Felipe — just a short drive from Memorial Park and River Oaks. Many patients reach us via Westheimer or Woodway Dr., depending on their neighborhood.

Insurance and Self-Pay Options

We accept most private insurance plans — including Blue Cross Blue Shield, United Healthcare, Aetna, Cigna, and others frequently used by our Houston patients. If you’re uninsured, our friendly billing team will walk you through self-pay options with clear, upfront pricing.