PRIMARY CARE
At Tidewater Physicians Multispecialty Group (TPMG), our four areas of primary care include family medicine, geriatric medicine, internal medicine, and pediatric medicine. Learn more about the different areas of TPMG Primary Care.
5424 Discovery Park Boulevard Get Directions Suzanne Williams Monday: 8:00 AM - 4:30 PM Very lovely, kind, and helpful people. (TPMG Colonial Endocrinology is the) best practice I have been to!…Read more Dr. Karen L. Knudsen is board certified in Endocrinology and Internal Medicine, as well as Endocrine Certification in Neck Ultrasound by the American Association of Clinical Endocrinologists. She has a special interest in adrenal and pituitary disorders, women’s health, and thyroid and diabetes conditions. Dr. Knudsen also performs thyroid ultrasounds and biopsies in the office. In February 2019, John D. Ireland, PA-C joined Dr. Knudsen at the Colonial Endocrinology office, located in the New Town area of Williamsburg. At TPMG Colonial Endocrinology we practice traditional, evidence-based endocrinology, which may require the prescription of synthetic hormones. We do not co-manage conditions with naturopaths, chiropractors, or other alternative medicine practitioners. We manage a variety of endocrine conditions, with some of the most common conditions including patients with thyroid issues, including thyroid nodules. Dr. Knudsen performs ultrasounds and biopsies of the thyroid/neck to assess these conditions in office. We manage PCOS and related menstrual issues (we do not do compounded HRT, “hormone therapy” including testosterone in premenopausal women) and patients with diabetes, both type 1 and type 2, as well as Parathyroid disorders related to the endocrine system and Males with hypogonadism. To learn more about this important branch of medicine, see our Endocrinology FAQs. Patients are seen by appointment. Please contact our office to schedule an appointment. Please bring your insurance card(s), photo ID, a complete list of medications, and specialist co-pay (if it applies) to your visit. All co-payments are due at the time of service. Please contact your primary care physician or diagnosing physician beforehand for a referral, as they are mandatory when making appointments. Prescription refill requests must be addressed at the time of your appointment, and any requests outside of this time will be addressed within 24 business hours. If you have any questions or concerns about your bill, please call our Office Manager. Very lovely, kind, and helpful people. (TPMG Colonial Endocrinology is the) best practice I have been to!…Read more Every single time! Gabrielle (at TPMG Colonial Endocrinology) from check-in/check-out greets me with a warm and welcoming smile. She is always kind to me when I come and…Read more
Office Address
Building B, Suite 201
Williamsburg, VA 23188
Telemedicine Now Available – Call to Schedule
Phone
FAX
(757) 345-6896
Office Manager
Office Hours
Tuesday: 8:00 AM - 4:30 PM
Wednesday: 8:00 AM - 4:30 PM
Thursday: 8:00 AM - 4:30 PM
Friday: 8:00 AM - 1:30 PM
Testimonials
TPMG Colonial Endocrinology
LOCATION INFORMATION
Endocrinologist in Williamsburg
New and Follow-up Appointments:
Referrals:
Prescription Refills:
Billing:
ADDITIONAL PROVIDERS IN PRACTICE
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PATIENT FORMS
What Our Patients Are Saying

5424 Discovery Park Boulevard
Building B, Suite 201
Williamsburg, VA 23188
Get Directions
Telemedicine Now Available – Call to Schedule
Suzanne Williams
Monday: 8:00 AM - 4:30 PM
Tuesday: 8:00 AM - 4:30 PM
Wednesday: 8:00 AM - 4:30 PM
Thursday: 8:00 AM - 4:30 PM
Friday: 8:00 AM - 1:30 PM
Dr. Karen L. Knudsen is board certified in Endocrinology and Internal Medicine, as well as Endocrine Certification in Neck Ultrasound by the American Association of Clinical Endocrinologists. She has a special interest in adrenal and pituitary disorders, women’s health, and thyroid and diabetes conditions. Dr. Knudsen also performs thyroid ultrasounds and biopsies in the office. In February 2019, John D. Ireland, PA-C joined Dr. Knudsen at the Colonial Endocrinology office, located in the New Town area of Williamsburg.Â
At TPMG Colonial Endocrinology we practice traditional, evidence-based endocrinology, which may require the prescription of synthetic hormones. We do not co-manage conditions with naturopaths, chiropractors, or other alternative medicine practitioners. We manage a variety of endocrine conditions, with some of the most common conditions including patients with thyroid issues, including thyroid nodules. Dr. Knudsen performs ultrasounds and biopsies of the thyroid/neck to assess these conditions in office. We manage PCOS and related menstrual issues (we do not do compounded HRT, “hormone therapy” including testosterone in premenopausal women) and patients with diabetes, both type 1 and type 2, as well as Parathyroid disorders related to the endocrine system and Males with hypogonadism. To learn more about this important branch of medicine, see our Endocrinology FAQs.Â
Patients are seen by appointment. Please contact our office to schedule an appointment.
Please bring your insurance card(s), photo ID, a complete list of medications, and specialist co-pay (if it applies) to your visit. All co-payments are due at the time of service.
Please contact your primary care physician or diagnosing physician beforehand for a referral, as they are mandatory when making appointments.Â
Prescription refill requests must be addressed at the time of your appointment, and any requests outside of this time will be addressed within 24 business hours.
If you have any questions or concerns about your bill, please call our Office Manager.
Very lovely, kind, and helpful people. (TPMG Colonial Endocrinology is the) best practice I have been to!…Read more
Every single time! Gabrielle (at TPMG Colonial Endocrinology) from check-in/check-out greets me with a warm and welcoming smile. She is always kind to me when I come and…Read more