Grant E Marcum
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Grant E Marcum
Learn how dental implants can put beauty back into your smile with the help of your dentist in Paso Robles, CA. Is your smile getting the attention it deserves? See for yourself how the knowledge, experience, and professional care of dentist in Paso Robles, Dr. Grant E. Marcum, can change your smile forever.

We are all so deeply committed and passionate in dentistry that you will have no choice but to enjoy your time with us! Our commitment to quality is equaled only by our commitment to providing exceptional customer service. We know that delivering excellent service begins with careful listening. You are an individual with unique ideals and goals, and we can only discover and deliver your expectations by listening to you.
Services
Paso Robles cosmetic dentist, Dr. Marcum first became interested in dentistry by reflecting on the joy it brought his parents-his father was a dentist and his mother was a dental hygienist. He began practicing full-time as a dentist in 1991, and has enjoyed practicing in the beautiful historic Paso Robles community since 1997.
From subtle changes to major repairs, we offer a variety of cosmetic dentistry in Paso Robles to help make your smile bright and beautiful. Whether your teeth are chipped, discolored, misshapen, or missing-Dr. Marcum and our expert team can provide you with the level and style of treatment you're comfortable with to achieve your optimum look, feel, and function.
We built a new facility to house our technology and provide a special place to make your dental visit an even more soothing, memorable experience. Housing some of the best dental technologies, we are your one-stop-shop for both general and cosmetic dentistry in beautiful, historic Paso Robles. We focus on quality customer service.
Good oral hygiene keeps your smile looking beautiful and contributes to your overall health and wellness. Our registered dental hygienists and San Luis Obispo area dentist, Dr. Marcum are committed to keeping your mouth healthy and making your cleaning appointments as comfortable and convenient as possible.
We view periodontal (gum) health as the foundation of a house-if you start building on a weak foundation, you're going to end up with a weak structure. With that in mind, we feel your dental health begins with good, sound periodontal health. Removing bacteria from the mouth is very important and can prevent the progression of periodontal gum disease.
Reviews (22)
Bevelina H.
Bevelina H.
Jun 30, 2021
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Everyone at this office is AMAZING! The new front office is fabulous. Amber and Tristan are so organized. Tammy (dental hygienist) is marvelous and thorough!! Doctor Marcum is the reason I have a beautiful smile. Lonnie is the brains behind the whole practice. You guys rock.
Alex Q.
Alex Q.
Jun 24, 2021
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I want to thank all the awesome staff at the office wonderful people I never at a place with everyone with smiles and helpful...thank you guys ...
Margaret Holderness
Margaret Holderness
May 21, 2021
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Dr. Marcum and his entire staff are always so friendly and professional. Their office is always so clean and immaculate. Their dental hygienist Tammy is so gentle and I often find my self falling asleep. Love this team!
Edith Schneider
Edith Schneider
Nov 26, 2020
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The deep cleaning was relatively pleasant, the price was extremely unpleasant: 1h 20 min for $996 and I only met the dental hygienist.....
Kurtis Goodin
Kurtis Goodin
Oct 13, 2020
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Fantastic staff! Very friendly, knowledgeable and professional. Thank you ladies for always making us feel welcome.
Bianca Guillen
Bianca Guillen
Oct 12, 2020
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I am a new patient at Dr. Marcums office. I was a bit nervous because I had a very bad experience with my last dentist. Dr. Marcum and his staff were amazing. I left there with everything explained to me, pamphlets of everything we had discussed, and a treatment plan. They took the time to schedule my root canal, that has to be done at another office (at his brother's office, which made me feel more comfortable after meeting Dr. Marcum). I left there feeling confident that I was in good hands and that my detal needs will be taking care of correctly.
B. Cohen
B. Cohen
Sep 07, 2020
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My husband and I are new residents of Paso Robles, having moved here in 2019. We asked new friends for referrals to dentists and are so pleased we could establish as new patients with Dr. Grant Marcum. The office staff, dental assistants and Dr. Marcum are friendly, efficient & very caring. Dr. Marcum is highly skilled in dentistry. So happy to be his patients!
Marci Rene Reynoso
Marci Rene Reynoso
Aug 31, 2020
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I very much like the entire staff. Always makes me feel comfortable. Dr Marcum is great chair side manner, very personable. He explains things simply and kindly. 5star service all the way.
Kevin B.
Kevin B.
Jul 25, 2019
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I'm very particular in regards to choosing a dentist and Dr. Marcum is one of the best. Always attentive to my questions and very responsive and proactive in regards to anticipating my future dental needs. Getting follow up appointments has been very easy without having to schedule months in advance. Very personable and professional. His staff have always been polite, attentive, and a pleasure to work with. Absolutely no issues or problems with billing or insurance. If you're looking for an excellent dentist with top notch services check out Dr. Marcum.
Alexander McGillivary
Alexander McGillivary
Sep 28, 2018
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Dr Marcum and his staff have treated us like family since we moved to the area. They are professional, personable, and have always made us comfortable even when we need drilling, crowns, etc...This is a practice you can rely on and they really do take care of their patients.
Gretchen B.
Gretchen B.
Aug 31, 2018
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Very friendly, and helpful, always give advanced notice when there will be a cost my insurance won't cover.
James Verco
James Verco
Oct 30, 2017
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Dr Marcum and his staff made me feel very welcome and comfortable. I would highly recommend to anybody, especially to anyone who has had bad experiences with dentists in the past. On my first visit with Dr Marcum, he immediately fixed problems caused by my previous dentist.
This is the first dentist I have had that I'm not worried about going to scheduled check ups.
Natalie Ward
Natalie Ward
Aug 27, 2017
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Dr. Marcum and his staff are very friendly and professional. I was in the office quite a bit this last year for Invisalign and every time I came in, I had a very short wait time and the staff were wonderful. There were no surprises with billing. Dr. Marcum takes great care to make sure that you are happy with your results and that your teeth are healthy!
Syndee G.
Syndee G.
Aug 16, 2017
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We moved from Orange County in 2011 to Paso Robles and have going to Dr. Marcum and staff for the past 5 years. I can't say enough good things about the entire office staff! Dr. Marcum is always very personable and upbeat (Which I appreciate) and Tammy the hygienist is awesome at what she does! She talks the entire time while she is cleaning your teeth so you aren't thinking about it! She is also very personable and friendly! Great place to go!! I don't hate going to the dentist any longer!!
Linda Gough
Linda Gough
Jun 23, 2017
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Always a pleasure to visit Dr. Marcum. His staff makes you feel like family. Tammy is a perfectionist when it comes to cleanings! YES, I even look forward to those!!! Highly recommend!
Kat M.
Kat M.
Jun 21, 2017
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I would like to say this office is absolutely amazing!!!! I haven't been to a dentist in many years, and they made me feel so comfortable!the staff was super nice, helpful, happy and organized. The office is very very clean! Dr Marcum is truly very nice! I have only been once so far and I can definitely tell that he cares about his patients. I am excited to have found them for my dental needs. Highly recommend if you are fearful like me! :) Thanks guys!!!!!
Debbie J.
Debbie J.
Feb 24, 2017
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I had an appointment with Dr, Marcum this past Wednesday to have my teeth whitened. His office staff were so professional and kind. The office was so clean and nicely decorated, I thought they had just moved in, but they had been there 13 years! They were on time and I found Dr. Marcum and his assistant, Nicole to be so extremely courteous, competent and thorough. The hour of Zoom whitening treatment was easy and painless. I would highly recommend this office! Great dentist and wonderful staff.
Chris R.
Chris R.
Nov 07, 2016
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Dr. Marcum and his staff almost make you look forward to a dental appointment. From the comfortable waiting room, the pleasant reception staff, the very attentive hygienist and the ever present Dr. Marcum this is one appointment where you leave feeling well cared for.
Jean Fallert
Jean Fallert
Sep 23, 2016
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Just had my new patient assessment, very thorough Office and staff is very clean and friendly Going back at 1 for a cleaning already
Keith G.
Keith G.
Jun 28, 2016
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Dr. Grant E. Marcum is the absolute best dentist who truly cares about his staff, his patients, and the quality care his office provides. He and his staff run a very tight operation.

Dr. Marcum has spared no expense in many ways to enhance the patent's dental experience. His highly trained staff utilizes the very best equipment and cutting edge dental software to provide the absolute best care, while protecting patients' privacy.

Additionally, his office offers amazing products with special offers, and at cost in some cases, such as Philips Sonicare, Waterpik, and Invisalign systems
Stephanie Juarez
Stephanie Juarez
Jun 18, 2015
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The best dentist ever! All the employees are so welcoming and makes your overall experience feel like you are part of the family!
Randy Ryan Ramos
Randy Ryan Ramos
Sep 20, 2014
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Grant has been taking great care of my teeth since he arrived in town. His father was my dentist as a kid. I love his staff and consider them a part of my extended family. I feel blessed to know he is there to take care of myself and my family.