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Collins' Team

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Dennis J. Collins, D.D.S.

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Mark A. Sloan, D.D.S.

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Jay Patel, D.D.S. Orthodontist
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Allison Sullivan, D.M.D.

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Tom Hensley, D.D.S.

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Cornell McCollum III, D.D.S., M.D. Oral Surgeon

Hygiene Staff

Brianna
Brianna

Devyn
Devyn

Emily
Emily
Emily
Emily S.

Irene
Irene

Irene

Trevor


Clinical Staff

Alyssa
Alyssa

Meghan
Meghan

Sam

Sam

Zoe
Zoe

Chelsea
Chelsea
Sam

Carla


Front Office

Aimee
Aimee

Angela
Angela

Betsy
Betsy
Norma
Norma

Martha
Martha
Betsy

Beth


Massage Therapist

Brittney

Renee

 
 

Administration

Jennifer
Jennifer

Steve
Steve
 
Collins Dental Group, P.C. Copyright © 2008-2018 All Rights Reserved.
2025 Aberdeen Court | Sycamore, IL 60178 | (815) 758-3666
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  • Services
  • Our Team
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Dennis J. Collins, D.D.S.
Education:
• Northwestern University Dental School, Chicago, IL
D.D.S. General Dentistry Degree: 1982

• University of Colorado, Boulder, CO
B.A. Molecular Cellular Developmental Biology; Biochemistry Degree: 1978
Professional:
• American Dental Association
• Illinois Dental Society
• Fox River Valley Dental Society
• Chicago Dental Society
• Associate Member DeKalb Dental Society (Past President)

Memberships:
• Resource Bank Board of Directors (Chair, Executive Compensation Committee; Member, Trust Committee)
• DeKalb Sanitary District Trustee (President)
• DeKalb County Economic Development Commission
• DeKalb County Farm Bureau DeKalb County Pork Producers Association
• Northern Illinois University Athletic Association
• Club 64 (Founder/Director Northern Illinois University Men’s Basketball Donor Recognition Club)
• University of Colorado Alumni Association
• Golden Buffalo Scholarship Association (University of Colorado Donor Recognition Club)
Experience:
• Resource Bank, N.A., DeKalb, Illinois, an over $200 million asset banking facility with branch locations throughout DeKalb County
• DeKalb Sanitary District, governing board for the DeKalb County Area Sewage and Sanitation Authority
• Class President, Northwestern University Dental School

Personal:
• Married, three children
• Life-long resident of DeKalb, Illinois
• First United Methodist Church, DeKalb, Illinois

Born and raised in DeKalb, Dr. Dennis Collins of the Collins Dental Group has practiced dentistry in the DeKalb/Sycamore area for over 25 years. Most recently, he relocated his practice to the Prairie Professional Park in Sycamore with the goal of building the finest dental facility in the Midwest to reflect the dental team’s commitment to excellence. “Our goal is to have the facility accent the quality of dentistry we are providing right here in the DeKalb/Sycamore community,” he said.

Some of the new features in the state-of-the-art facility include complimentary massage therapy, large flat-screen TVs in every treatment room, all-digital radiography, a comprehensive sterilization center, and complimentary Wi-Fi.

“Our goal is to try to build the nicest facility in the Midwest, and I think we did it,” he exclaimed. “We use the highest quality of materials here. I think it’s evident the first time you walk in the door. We do not cut any corners. We feel it is in the patient’s best interest for us to provide them with the best dentistry has to offer,” he added.

His patient-centered philosophy emphasizes the value of educating patients about the most innovative techniques available. “I believe in giving our patients choices. First of all, let them know what options are available and inform them. There are many new materials and techniques that have come into dentistry during the last 10 years. Our entire dental team stresses staying current on dental treatment that works. I think it is essential to give patients options to empower them to make decisions about their own healthcare,” he said.

As a fly fisherman who enjoys running marathons, skiing, and golfing, Dr. Collins enjoys the great outdoors when he is not practicing dentistry. He is also passionately involved with the DeKalb/Sycamore community. As President of the DeKalb Sanitary District Board of Trustees and an executive board member of the DeKalb County Economic Development Corporation, Dr. Collins believes it is important to stay vested in the local community.

“All of our dentists at Collins Dental Group are involved in local extracurricular activities in a big way. We feel it is important to be part of the social fabric of our community along with our patients,” he emphasized. “We look forward to seeing our patients at the grocery store, a baseball game, or the school PTA meeting,” he added. All the dentists at Collins Dental Group live, work, and play in our local community.
Mark A. Sloan, D.D.S.
Education:
• Bachelor of Science degree in Biology with a minor in Chemistry and Physics from Northern Illinois University in 1992
• Doctor of Dental Surgery degree from Northwestern University Dental School in 1996

Professional Memberships:
• American Dental Association
• Illinois State Dental Society
• Academy of General Dentists
• Chicago Dental Society
• Peer Review committee of the Illinois Dental Society

Personal:
• Avid skier, loves the outdoors
• Enjoys motocross riding, competitive paintball
• Enjoys jamming out on the guitar and playing in a local band

Mark A. Sloan, D.D.S. has been practicing dentistry for 19 years. Having learned that the need for a team based patient-first style of dentistry yields the best result for his patients, Dr. Sloan decided to join the Collins Dental Group team. "It is very reassuring to be associated with a group of dental professionals who really care about their patients. Putting the patient first and works together as a team is what dentistry is all about."

Dr. Sloan earned his Bachelor of Science degree in Biology with a minor in Chemistry and Physics from Northern Illinois University in 1992. He earned his Doctor of Dental Surgery degree for Northwestern University Dental School in 1996.

Dr. Sloan has concentrated his continuing dental education with emphasis in advanced esthetics, implant restoration dentistry, and root canal therapy. He is a member of the American Dental Association, Illinois State Dental Society, Chicago Dental Society and Academy of General Dentists. He was past president of the West Suburban branch of the Chicago Dental Society. He is currently a member of the Peer Review committee of the Illinois Dental Society and a past delegate for Illinois.

Dr. Sloan is married to Denise (also a Northern Illinois University graduate) and they have a young son, Miles. Dr. Sloan is an avid skier and loves the outdoors. He also enjoys motocross riding, competitive paintball, and, when time permits, jamming out on the guitar and playing in a local band.
Jay Patel D.D.S. - Orthodontist
Education:
• Indiana University Residency in Orthodontics: 1988
• Northwestern University Doctorate degree in Dental Surgery: 1986
• Southern Illinois University Bachelor of Arts in Chemistry and Physiology: 1981/1982
Professional:
• American Dental Association
• Chicago Dental Society
• Midwestern Society of Orthodontics
• American Association of Orthodontics
Personal:
• Born in Morogoro, Tanzania, and moved to Ndola, Zambia, in 1964.
• During his teen years he went to high school in London, England, and he came to the United States in 1979 to finish his undergraduate degrees at Southern Illinois University.
• Likes spending time with his wife and three children.
• Enjoys traveling to Africa, Asia, Europe, and the Caribbean
• Favorite hobby is art.

Dr. Jay Patel was born in Morogoro, Tanzania, and moved to Ndola, Zambia in 1964. During his teen years he went to high school in London, England. He came to the United States in 1979 to finish his undergraduate degrees at Southern Illinois University.

Dr. Patel anticipates working side-by-side with the entire Collins Dental Group team to provide the best care possible for patients. He attends education courses to stay informed on the latest techniques in orthodontic treatment. "In order to provide my patients with the best possible treatment, it is important that I utilize the latest orthodontic technology and treatment philosophies," says Dr. Patel.

When he is out of the office, Dr. Patel enjoys spending time with his wife and three children. He also enjoys taking trips back to Africa, Asia, and Europe, as well as the Caribbean. One of Dr. Patel's favorite hobbies is art, which has helped him to develop a keen eye for detail.
Allison Sullivan, D.M.D.
Education:
• Midwestern University College of Dental Medicine – Arizona, DMD
• University of Illinois at Urbana-Champaign, BS
Professional:
• American Dental Association
• Omicron Kappa Upsilon National Dental Honor Society
Patient-Centered Philosophy:
• Strives to build long-term relationships with patients in order to create a foundation of trust and respect for dental treatment
• Recognizes the importance of comprehensive treatment planning and setting patients up for lasting oral health
• Incorporates and stays up-to-date with the latest technological advances in dentistry
• Enjoys integrating her background in food science and human nutrition to educate patients on oral health
Personal:
• Enjoys spending time with her husband and two young children, hiking, traveling, gymnastics, and exercising

"I love dentistry because it allows me not only to help people with their dental needs, but to form lasting relationships with so many different people in my community. I am proud to be a part of Collins Dental Group, and look forward to making you and your family feel comfortable and confident in your dental experience here."

Tom Hensley, D.D.S.
Education:
• Marquette University School of Dentistry, DDS
• University of Iowa, BBA
Professional:
• American Dental Association
• Illinois State Dental Society
• Chicago Dental Society
Patient-Centered Philosophy:
• Focused on providing comprehensive, start-to-finish care for every patient
• Strives to establish a personal connection with each patient to better understand their individual needs and thought processes
• Respects patient’s autonomy and works to educate and empower each patient to achieve an optimal treatment outcome
• Understands and provides the most innovative dental techniques
• Provides quality-driven, comfortable care to all patients
Personal:
• Enjoys coaching, recreational sports, cooking, and spending time with family and friends

"I was trained and educated with the perspective that patients always come first. Whether it’s something small and simple, or complex and complicated I always want my patients to feel comfortable. I was born in DeKalb and raised in Sycamore and feel very blessed to offer the people of my community help with their dental care."

Cornell McCollum III, D.D.S., M.D. Oral Surgeon
Education:
• Howard University, School of Dentistry – Washington, D.C.
• Northwestern University, School of Medicine – Evanston, IL
Professional:
• American Association of Oral and Maxillofacial Surgeons
• International Congress of Oral Implantologists
• American Academy of Cosmetic Surgeons
• American Dental Society of Anesthesiologists
Personal:
• Enjoys coaching youth soccer.
• Likes reading.
• Active in martial arts.