1. Daniel Drennan, MD

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Broomfield, CO

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Daniel Drennan, MD

1.0 (1 review)

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14 years ago

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BoulderCentre for Orthopedics & Spine - Discovering the damage from my bike crash

BoulderCentre for Orthopedics & Spine

2.8(70 reviews)
12.2 mi•East Boulder

I have no idea why this place does not have five stars. My husband and I have met with several…read moredifferent doctors at Boulder Center for Orthopedics & Spine including Dr. Master and Dr. Kramer and all have been excellent. I've had ankle surgery with Dr. Kramer and my husband has had shoulder surgery with Dr. Master. Dr. Master has also helped me with shoulder and hand problems. The doctors are knowledgeable, trustworthy, caring and listen to all questions and concerns. We highly recommend this company! My husband and I have also had a very positive experience with the physical therapists at Boulder Center for Orthopedics and Spine - specifically Holly who knows her stuff!

HORRIBLE! Boulder Centre for Orthopedics & Spine is the most frustrating experience I've had with a…read moremedical practice! I came from Utah thinking CO would be as flawless. Foolish me. Before my appointment, my UT surgeon promptly emailed my knee MRI/records to ensure a proper evaluation, even calling me to confirm it was done. Awesome! Yet, during my consultation, Dr. Igolnikov and his assistant insisted they were never received. While there, I call UT, they confirm - again - with the day/time records were emailed. I'm directed to the front desk. No luck. I state I'm not leaving until they find the email (their eyes rolling), which two desk gals finally did 30min later (my eyes rolling). No apology. Just defensive excuses. Who hires these people?! Unfortunately, I still had to pay for a wasted visit. Billing department was no better. They required I prepaid for my self-pay appointment ($378). I did. Yet, a week later I received an emailed bill for $411 due. A few weeks later the same bill arrived by mail. I called billing and was told, they had overlooked my payment. The repeated administrative failures involving both medical records and billing - is unacceptable! Since they struggle with fundamentals, obviously I have no confidence in the organization and am not into "hoping" things will change at the risk of my time, money, and most importantly - my knees. I will not return.

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BoulderCentre for Orthopedics & Spine
BoulderCentre for Orthopedics & Spine - BoulderCentre for Orthopedics, 4740 Pearl Parkway, Boulder, CO (303) 449-2730

BoulderCentre for Orthopedics, 4740 Pearl Parkway, Boulder, CO (303) 449-2730

BoulderCentre for Orthopedics & Spine

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Relevare infusions of Colorado - Each patient gets a private room for their IV ketamine treatment. Comfy chair, eye shades and music to aid in your journey.

Relevare infusions of Colorado

5.0(6 reviews)
8.8 mi

I couldn't be happier with my experience at Relevare…read more Dr. Mallek is extremely competent and knowledgeable, combined with a compassionate and sincere interpersonal manner. Ketamine infusions can be disorienting and challenging, but with her and her staff, I always felt like I was in good hands. It's a wonderful contrast to many of the healthcare providers I've worked with in the past, who were either disinterested or arrogant or seemed interested only in extracting payment. The clinic is small but well appointed, which lends to the personal feeling. The infusion rooms are comfortable and private. There is frequent follow up and measurement of how one is responding to treatment. Ketamine infusions are expensive, but the rates here are competitive with all the providers I contacted in the area, and significantly cheaper than many. Overall, I would highly recommend Relevare!

Dr. Mallek is a kind and experienced ketamine provider. I had a lot of questions and she answered…read moreall of them to my satisfaction. Her clinic is beautiful and welcoming. The ketamine infusion room is very comfortable. I enjoyed my session very much and have scheduled my next one. She has educational material available as well. Dr. Mallek personally invests a great deal of herself during the initial consultation. She's not just interested in the stats required to give her patients ketamine. She's interested in getting her patients healthy in all different areas and genuinely cares.

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Relevare infusions of Colorado - IV therapy area
 NAD, Myers, Vitamin C, alpha lipoic acid, NAC and more

IV therapy area NAD, Myers, Vitamin C, alpha lipoic acid, NAC and more

Relevare infusions of Colorado - Dr. Mallek has over 10 years experience with IV ketamine and is passionate about helping you live your best life. #restoringhope

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Dr. Mallek has over 10 years experience with IV ketamine and is passionate about helping you live your best life. #restoringhope

Daniel Drennan, MD - anesthesiologists - Updated November 2026

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