The following health physicists have been approved to provide shielding calculations and room design for various types of medical X-ray system installations per the requirements in WAC 246-225-030.
This list is provided as a service and the presence or absence of an organization on this list does not constitute an endorsement by the Department of Health. The Office of Radiation Protection does not certify or guarantee the work of any of the health physics consultants listed here.
Aktina Medical Physics Group
George Zacharopoulos, MS, DABR, DABMP
Board Certified Medical Physicist
360 Rt. 9W North, Congers, NY 10920
Phone: 845-268-0101, Toll Free: 888-433-3380
Shielding design for all diagnostic and therapeutic (excluding Proton) facilities.
Andre, Michael P., Ph.D., FAIUM, DABR
2814 Santa Fe Vista Court, Suite M, Encinitas, CA 92024-6600
Shielding designs for radiographic, fluoroscopic, and CT X-ray units
Ayers, Rex, MS, DABR, MCCPM, CHP
99104 East Ridgeview Drive S.E., Kennewick, WA 99338
Diagnostic and therapy facility shielding design.
Baltzo Health Physics Service, Inc.
31 - 213th Street SW, Bothel, WA 98021
Full service Health Physics and Medical Physics Service Corporation providing support for imaging departments, nuclear medicine departments, and biotechnology companies throughout the Northwest region.
Barish, Robert J., Ph.D., DABR, CHP, FAAPM, FHPS
Certified Health Physicist
211 E. 70th Street, Ste. 12G, New York, NY 10021
Shielding designs for all modalities of diagnostic and therapeutic radiation producing equipment including Cyberknife and TomoTherapy, but excluding proton facilities.
Brown, Paul H., Ph.D.
Professor, Diagnostic Radiology (L340)
Oregon Health and Science University
3181 Southwest Sam Jackson Park, Portland, OR 97239-3098
Shielding calculations of diagnostic and therapeutic X-ray facilities, radiation safety surveys and other related work.
Chung-Bin, Anthony, Ph.D.
Board Certified Medical Physicist
12044 Sweetwater Circle, Eagle River, AK 99577
Diagnostic X-ray machine testing, mammography machine testing for MQSA and shielding calculations for radiation facilities.
Jeremy L. Corwin, Certified Health Physicist
Joby Voetberg, MHP
P.O. Box 1707, Centralia, WA 98531
Comprehensive health physics and medical physics services for diagnostic imaging modalities, including equipment testing, safety audits, radiation shielding designs, and radiation detector calibration.
Tracy Ikenberry, CHP
1835 Terminal Drive, Suite 200, Richland, WA 99354
Performs diagnostic shielding calculations for X-ray therapy, radiographic, and fluoroscopic facilities.
Diagnostic Physics, Inc.
Elizabeth Franklin, M.S., DABR
P.O. Box 49587, Charlotte, NC 28277
Performs diagnostic shielding calculations for all types of radiological installations.
Les Wilkins & Associates
6850 - 35th Avenue N.E., Seattle, WA 98115
Shielding calculations for chiropractic, medical, CT, podiatric, and veterinary X-ray facilities.
Earley, Donna L.
MXE - Medical X-Ray Enterprises, Inc.
12107 West Jefferson Boulevard, Culver City, CA 90293
X-ray and nuclear shielding calculations including diagnostic, PET/CT, Gamma Knife and other ionizing radiation modalities.
Dave Salmon, Health Physicist
Jennifer Johnson, Health Physicist
P.O. Box 244, Freeland, WA 98249
Shielding plans for diagnostic radiology, CT, PET, nuclear medicine consulting and licensing, general radiation safety consulting and planning.
Erickson, Richard, MS, ABR
7300 NE Vancouver Mall Dr. #59, Vancouver, WA 98662
Gough, John, CHP, CMLSO, RRTT
Swedish Health Services/Northwest Radiation Services
Diagnostic medical physics, nuclear medicine audits, nuclear medicine and PET physics testing, shielding calculations, radiation safety training, conducts radiation safety surveys, X-ray system calibrations, and decommissioning.
Gutcheck, Robert, Ph.D.
6513 183rd Place SW, Lynnwood, WA 98037
Conducts mammography physics surveys for MQSA; evaluations of X-ray and CT equipment; shielding calculations for all diagnostic X-ray facilities; and provides medical physics consulting support for diagnostic imaging facilities.
Gene L. Wollan, MS, Medical Physicist, President
7525 SE Lake Road, Milwaukie, OR 97267
Shielding recommendations for diagnostic facilities (medical, dental, nuclear medicine), therapy facilities (accelerators, orthovoltage and radioactive materials) and industrial facilities (X-ray, radioactive materials) and MQSA medical physics support.
Hrejsa, Allen F., Ph.D.
355 Millcreek Lane, Naperville, IL 60540
Phone: 630-357-6957 or part-time office 847-723-8168
Diagnostic X-ray machine testing. Mammography machine testing for MQSA (including FFD), and shielding calculations for radiation facilities.
Scott Fuller, MS, DABR
5708 N Bergman Avenue, Boise, ID 83646
ABR-certified medical physics support services for diagnostic and nuclear medicine departments. Shielding design and verification for all diagnostic imaging modalities. Regulatory and accreditation performance surveys, radiation safety support and consultation, other relevant medical physics support.
3117 La Mesa Drive, San Carlos, CA 94070
Shielding design for diagnostic, therapy, particle therapy, research and industrial facilities. General health physics services and surveys.
Iverstine, Sam, MS, CHP
P.O. Box 1600 / T4-54, Richland, WA 99352
Diagnostic and therapy X-ray shielding.
John Pagel, Medical Health Physicist
1926 Elm Tree Drive, Nashville, TN 37210-3718
Calculation of shielding needed for X-ray rooms.
2 Science Road, Glenwood, Illinois 60425
Ramon Davila, RPT NBA, 865-801-0424
Michelle Lockamy Hernandez, 919-306-4685
Fred Nightser, MS, CNMT, 949-533-9726
Adam Smith, MS, 910-690-3628
Shielding calculations for diagnostic, radiographic, and therapeutic X-ray facilities; equipment performance evaluations, radiation safety and health program audits, reviews and training; radioactive material license preparation - medical and industrial.
Melissa C. Martin, M.S., DABR, FACR, FAAPM
Therapy Physics Inc.
2501 Cherry Avenue, Ste 270, Signal Hill, CA 90755
4907 Bayview Road, Langley, WA 98260
Physics testing of X-ray, mammography, and CT equipment; shielding calculations for X-ray, mammography (digital & film screen), and CT facilities; lectures on mammography, diagnostic radiology, and radiation safety; fetal dose calculations.
Lawrence Sweeney, Ph.D. or John T Washington, M.S.
21031 67th Avenue West, Lynnwood, WA 98036-7306
Phone: 425-672-2841 or 1-800-475-2841
X-ray shielding, calculations, surveys for radiation therapy facilities and diagnostic shielding calculations.
Eric Hooper, MS, CHP, DABSNM
2815 North Cheyenne Street, Tacoma, WA 98407
Diagnostic medical physics, nuclear medicine audits, nuclear medicine and PET physics testing, MSQA testing, CT physics testing, shielding calculations, radiation safety training, conducts radiation safety surveys, X-ray system calibrations, and decommissioning.
Orton, Nigel, PhD, DABR
Chief Medical Physicist
910 West 5th Avenue, Suite 102, Spokane, WA 99204
Shielding calculations for diagnostic and therapeutic X-ray facilities; radiation safety surveys; radiotherapy physics consulting.
Glenn R Deacon, MSEE, M.S.
1500 Via Hacienda, Chula Vista, CA 91913
General radiation shielding plans/consultation for all diagnostic imaging (R&F, CT, etc) and for Nuclear Medicine (gamma camera and radioactive materials) and PET installations.
Radiation Physics Consulting, Inc.
Radiological Physics Services, Inc.
3839 Napier Road, Plymouth, MI 48170
Shielding and plan reviews for diagnostic, radiographic, and mammography facilities.
S & D Design LLC
1926 Elmtree Drive, Nashville, TN 37210
PO Box 215, 23624 157th Ave N, Cordova, IL 61242
Sharma, Anil, PhD, DRP, DABR, DABMP
Director, Medical Physics & RSO
Clinical Associate Professor, UCI
California State Approved Medical Physicist
17928 Point Reyes St., Fountain Valley, CA 92708
X-ray therapy facility shielding design.
Silvain, Daniel, MS, DABR
9661 East Bennett, Tucson, AZ 85747
Sound Medical Physics Co.
Ray W. Luse, M.S., DABR
15508 North Shady Slope Road, Spokane, WA 99208
Therapy physics locums, consulting and diagnostic X-Ray, CT, and PET facility shielding designs.
T & K X-Ray Consultants, Inc.
Independent X-Ray Consultant
930 Dover Street, Chippewa Falls, WI 54729
TMG Medical Physics
Thomas Griglock, Ph.D., DABR
22790 SW Cowlitz Drive, Tualatin, OR 97062
Expertise: Shielding calculations for diagnostic imaging facilities and equipment, radiation safety surveys of all diagnostic imaging equipment and nuclear medicine departments. Dr. Griglock is chief diagnostic imaging physicist at Oregon Health & Science University.
Vorndran, Lawrence G., M.Sc., D.A.B.R.
Certified Medical Physicist
8817 S. Cheney - Spokane Road, Spokane, WA 99224
Physics locums, shielding designs, surveys, acceptance, and commissioning of therapeutic and diagnostic equipment.
West Physics Consulting, LLC
3825 Paces Walk, Suite 250, Atlanta, GA 30339
Full-service diagnostic medical physics, specializing in ACR accreditation, shielding design, and nuclear medicine consulting.
Washington State Department of Health - Construction Review Services
P.O. Box 47852, Olympia, WA 98504-7852
NOTE: This name and address is to submit notification information to the Department of Health Construction Review Office for HOSPITALS undergoing changes in X-ray rooms.
Links to external resources are provided as a public service and do not imply endorsement by the Washington State Department of Health.
Send the following information to our X-Ray Team:
- Resume or curriculum vitae
- Training certificates
- Three examples of shielding plans you have completed, two radiographic and one of another type. The examples should include:
- Room name and description.
- Machine type and specifics, if available.
- Methods used for determining shielding calculations.
- Written summary of each wall in the plan. Include calculations, if available.
- A separate summary table, including for each wall: wall description, barrier type, control type, distance of occupied area, occupancy factor, existing shielding, calculated shielding, amount recommended.
- Equipment layout or blueprints of the X-ray room, and rooms directly affected by scatter or primary beam.