Board-Certified Spine Ortho Surgeon

Del Mar – 12264 El Camino Real #202 San Diego, CA 92130,
Chula Vista – 750 Medical Center Ct, Suite #14 Chula Vista, CA 91911,
and Tustin – 12575 Newport Ave, Suite C Tustin, CA 92780
Phone: (858) 356-0361

Dr. William Tontz, Jr. is an orthopedic surgeon with extensive experience in all aspects of orthopedic surgery, including spine surgery, extremities, and fracture care. A graduate of the University of Southern California School of Medicine with an undergraduate degree in Biology from the University of California, Irvine, Dr. Tontz, Jr. is American Board Certified in Orthopedic Surgery. In addition to his expertise in general orthopedics, he is also trained in spinal conditions, with specialties including spine trauma and reconstruction, minimally invasive cervical and lumbar surgery, as well as non-operative spinal care and decompression surgery. Dr. Tontz, Jr.’s comprehensive background allows him to provide exceptional care for a wide range of orthopedic needs, from complex spinal issues to fractures and extremity conditions.

619-770-0746 cell



1994 – 1998
University of Southern California School of Medicine, MD

1989 – 1994
University of California Irvine, BS Biology


Orthopaedic Surgical Internship
July 1998 – June 1999
Department of Surgery – University California San Diego, La Jolla, CA

Orthopaedic Research Resident
July 1999 – June 2000
Department of Orthopaedics – University California San Diego, La Jolla, CA

Orthopaedic Surgical Residency
July 2000 – 2004
University California San Diego, La Jolla, CA

Spine Fellowship
July 2004 – July 2005
University of Wisconsin, Madison, WI – Drs. Tom Zdeblick, Paul Anderson, Cliff Tribus

San Diego Orthopaedic Associates
July 2005- August 2010
San Diego, California

Crystal Lake Orthopedics
August 2010- May 2011
Crystal Lake, IL

Coastal Orthopaedics and Sports Medicine
August 2011- July 2012
Bradenton, FL

California Orthopaedic Institute
August 2012-June 2021
San Diego, CA

Coastal Medical Group
May 2017-present
San Diego, CA

Sarasota Orthopedic Institute
December 2022-present
Bradenton, FL


US Open Tennis Champion – Father-Son Division, New York, N.Y., Sept. 1989
Dean’s List, University of California, Irvine, 1990-1994
Alpha Omega Alpha Medical Honor Soc, Presented to top 15% of Medical School Class, 1997
Administrative Chief Resident, University of California, San Diego Department of Orthopaedics, La Jolla, CA 2003 – 2004
Member North American Spine Society Evidence Based Medicine Committee 2011-present
Medical Director Spine and Joint Center, Lakewood Ranch Medical Center 2011-2012
Medical Director Spine and Joint Center, Paradise Valley Hospital 2013-present
Chief of Surgery, Paradise Valley Hospital 2016-2019

Board Certified American Board of Orthopaedic Surgery 2007-present


McPherson, E.J., Tontz W Jr, Patzakis M, Woodsome C, Holtom P, Norris L, Shufelt C: Outcome of infected total knee utilizing a staging system for prosthetic joint infection, Am J Orthop. 1999 Mar;28(3):161-5.

Lane, J.G., Tontz, W.L., Massie, M.S., Chen, A.C., Bae, W.C., Sah, R.L. and Amiel, D.: A Biochemical and Biomechanical Assessment of Short Term Effects of Mosaicplasty in a Goat Knee. Am Orthop Soc Sports Med, Sun Valley, June 18-21, 2000.

Kim, C, Tontz, W.L., Pedowitz, R.A., Meniscal Cysts. Meniscal Surgery and Treatment. Operative Techniques in Orthopaedics, Vol 10 No 3. July 2000: 227-233.

Ostrander, R.V., Goomer, R.S., Tontz, W.L., Khatod, M., Harwood, F.L., Maris, T.M. and Amiel, D.: Allogenic Donor Cell Fate in Tissue Engineering for Articular Cartilage Repair. Clin Orthop Relat Res. 2001 Aug;(389):228-37.

Tontz, W.L., Lane, J.G., Massie, J.B., Sah, R.L., Chen, A.C. and Amiel, D.: A Morphological, Biochemical and Biomechanical Assessment of Short Term Mosaicplasty in an Animal Model . Trans 47th Annual Orthop Res Soc Mtng., San Francisco; 26(2):685,2001.

Lane, J.G., Tontz, W. L., Jr., Massie, J.B., Chen, A.C., Bae, W.C., Amiel, M.E., Sah, R.L., Amiel, D.: A Morphological, Biochemical and Biomechanical Assessment of Short Term Effects of Mosaicplasty in an Animal Model. Arthroscopy. Vol 17, No 8 (October), 2001: pp 856-863.

Tontz, W. L., McPherson, E.J., Robertson, J.L., Shufelt, C., Patzakis, M.J.: Outcome of Infected Total Knee Arthroplasty as a Function of Spacer Type, Poster Presentation. Am Acad Orthop Surg, San Francisco, CA March 1st-4th 2001.

Tontz, W.L., Ostrander, R.; Ball, S.; Goomer, R.; Harwood, F.; Maris, T. and Amiel, D.: Long Term Donor Cell Fate Following Articular Repair in a Rabbit Model. Trans 47th Annual Meeting, Orthopaedic Research Society, 26(2): 607, 2001.

Ball, S.T., Chen, A.C., Tontz, W.L., Jr., Amiel, M.E., Wong, V.W., Bae, W.D., Sah, R.L., Bugbee, W.D., Amiel D.A.: Preservation of Fresh Human Osteochondral Allografts: Effects of Storage Conditions on Biological Biochemical and Biomechanical Properties. 48th Annual Mtng Orthop Res Soc, Dallas, TX, Feb. 10-13th, Poster 441, 2002.

Brage, M.B.; Tontz, W.; Bugbee W: Intraoperative and Postoperative Complications of Fresh Tibiotalar Allografting, Podium Presentation. Foot and Ankle Subspecialty Day. Am Acad Orthop Surg, Dallas, TX Feb 13-17th, 2002.

Ball, S, M.D., Tontz, W., Bugbee, W, Chen, A., Wong, V., Sah, R, Amiel, D: The Time Dependent Effects of Storage on Fresh Osteochondral Allografts. 69th Annual Mtng. Am Acad Orthop Surg, Dallas, TX, Feb. 13-17th, Poster #P178, 2002.

Ball, S., Amiel, D., Williams, S.K., Tontz, W., Chen, A.C., Amiel, M., Sah, R.L. and Bugbee, W.D.: Storage of Fresh Osteochondral Allografts: Enhancement of Preservation, Vernon P. Thompson and Lloyd W. Taylor Award, Western Orthopaedic Assoc., Maui, August 1-4, 2002.

Kim, C.W., Jamali, A., Tontz, W. L., Jr., Convery, F.R., Amiel, D., Brage, M.E., and Bugbee, W.: Treatment of post-traumatic ankle arthrosis with bipolar tibiotalar osteochondral shell allografts. Foot ankle Int 2002 Dec; 23 (12): 1091-102.

Tontz, W; Bugbee, W; Brage, M. Use of Allografts in the Management of Ankle Arthritis. Foot and Ankle Clinics, Foot Ankle Clin. 2003 Jun;8(2):361-73, xi.

Ball, S., Amiel, D., Willliams, S, Tontz, W., Chen A., Sah, R, Bugbee, W: The Effects of Storage on Fresh Human Osteochondral Allografts- Clin Orthop Relat Res. 2004 Jan;(418):246-52

Ball, S, Goodmer, R. Ostrander, R; Tontz, W.; Williams S; Amiel: Pre-Incubation of Perichondrial Cells in a Polyactic Acid Scaffold Enhances Donor Cell Retention. Clin Orthop Relat Res. 2004 Mar;(420):276-85.

Tontz, W., Grandlund, K., Brage, M.: Talar Head Fracture and Dislocations: Report of Seven Cases. Orthopaedic Trauma Association Annual Meeting, October 9-11th, 2002, Toronto, Canada.

McPherson, E., Tontz, W., Roidis, N., Robertson, J., Shufelt, C., Patzakis, M.: Comparison of Articulated and Static Spacers in the Treatment of Infected Total Knee Arthroplasty. Podium Presentation, SICOT/SIROT, 2002 XXII World Congress. San Diego, California, August 24-31st

Tontz, W., Anderson, Paul A. MD; Resnick, Daniel MD. Clearance of the Asymptomatic Cervical Spine: A Meta Analysis: Poster #80 Spine 2005 Volume- Issue 7-p 332-333

Abrams R, Tontz W., Pisotriquetral arthrodesis as an alternative to excision for pisotriquetral instability in high-demand patients: a case report in a gymnast. J Hand Surg Am. 2006 Apr; 31(4):611-4

Proceedings of the 21st Annual Meeting of the North American Spine Society. The Effect of Anterior Lumbar Interbody Fusion at L5/S1 on Adjacent Segment Degeneration. Tontz, W., Myung, K., and Zdeblick, T., September 2006

Williams SK, Amiel D, Ball ST, Allen RT, Tontz WL Jr, Emmerson BC, Badlani NM, Emery SC, Haghighi P, Bugbee WD. Analysis of cartilage tissue on a cellular level in fresh osteochondral allograft retrievals. Am J Sports Med. 2007 Dec;35(12):2022-32. Epub 2007 Aug 27.

Anderson PA, Muchow RD, Munoz A, Tontz WL, Resnick DK. Clearnace of the asymptomatic cervical spine: a meta-analysis. J Orthop Trauma. 2010 Feb;24(2):100-6. Review.

Matz PG, Meagher RJ, Lamer T, Tontz WL Jr, Annaswamy TM, Cassidy RC, Cho CH, Dougherty P, Easa JE, Enix DE, Gunnoe BA, Jallo J, Julien TD, Maserati MB, Nucci RC, O’Toole JE, Rosolowski K, Sembrano JN, Villavicencio AT, Witt JP. Guideline summary review: an evidence-based clinical guideline for the diagnosis and treatment of degenerative lumbar spondylolisthesis. Spine J. 2015 Dec 8. pii: S1529-9430(15)01762-3. doi: 10.1016/j.spinee.2015.11.055.
[Epub ahead of print] Review.

Kreiner DS, Hwang SW, Easa JE, Resnick DK, Baisden JL, Bess S, Cho CH, DePalma MJ, Dougherty P 2nd, Fernand R, Ghiselli G, Hanna AS, Lamer T, Lisi AJ, Mazanec DJ, Meagher RJ, Nucci RC, Patel RD, Sembrano JN, Sharma AK, Summers JT, Taleghani CK, Tontz WL Jr, Toton JF; North American Spine Society. An evidence-based clinical guideline for the diagnosis and treatment of lumbar disc herniation with radiculopathy. Spine J. 2014 Jan;14(1):180-91. doi: 10.1016/j.spinee.2013.08.003.
Epub 2013 Nov 14. Review.

Reitman CA, Hills JM, Standaert CJ, Bono CM, Mick CA, Furey CG, Kauffman CP, Resnick DK, Wong DA, Prather H, Harrop JS, Baisden J, Wang JC, Spivak JM, Schofferman J, Riew KD, Lorenz MA, Heggeness MH, Anderson PA, Rao RD, Baker RM, Emery SE, Watters WC 3rd, Sullivan WJ, Mitchell W, Tontz W Jr, Ghogawala Z. Cervical fusion for treatment of degenerative conditions: development of appropriate use criteria. Spine J. 2021 Sep;21(9):1460-1472. doi: 10.1016/j.spinee.2021.05.023.
Epub 2021 Jun 1. PMID: 34087478.

Grants and Awards

2001 – Academic Senate Grant – University of California San Diego
2000 – Orthopaedic Research and Educational Foundation Grant

Alpha Omega Alpha Society
North American Spine Society

State License
CA A069746
FL ME 110180
NV 23329