Karen Lynn Knudsen, MD - Medicare Endocrinology in Williamsburg, VA

Karen Lynn Knudsen, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Williamsburg, Virginia. She went to Yale University School Of Medicine and graduated in 1999 and has 25 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice Tidewater Physicians Multispecialty Group Pc and her current practice location is 5424 Discovery Park Boulevard, Bldg B Ste 201, Williamsburg, Virginia. You can reach out to her office (for appointments etc.) via phone at (757) 903-4808.

Karen Lynn Knudsen is licensed to practice in Virginia (license number 0101247423) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1659574309.

Contact Information

Karen Lynn Knudsen, MD
5424 Discovery Park Boulevard, Bldg B Ste 201,
Williamsburg, VA 23188
(757) 903-4808
(757) 707-3507

Map and Direction




Physician's Profile

Full NameKaren Lynn Knudsen
GenderFemale
SpecialityEndocrinology
Experience25 Years
Location5424 Discovery Park Boulevard, Williamsburg, Virginia
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Karen Lynn Knudsen attended and graduated from Yale University School Of Medicine in 1999
  NPI Data:
  • NPI Number: 1659574309
  • Provider Enumeration Date: 06/08/2007
  • Last Update Date: 12/05/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 0244424489
  • Enrollment ID: I20101101001113

Medical Identifiers

Medical identifiers for Karen Lynn Knudsen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1659574309NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 0101247423 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Riverside Walter Reed HospitalGloucester, VAHospital
Riverside Regional Medical CenterNewport news, VAHospital
Sentara Williamsburg Regional Medical CenterWilliamsburg, VAHospital
Riverside Doctors' Hospital Of WilliamsburgWilliamsburg, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Tidewater Physicians Multispecialty Group Pc2860398526252

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Karen Lynn Knudsen allows following entities to bill medicare on her behalf.
Entity NameTidewater Physicians Multispecialty Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902848294
PECOS PAC ID: 2860398526
Enrollment ID: O20031211000980

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Karen Lynn Knudsen is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Karen Lynn Knudsen, MD
860 Omni Blvd, Suite 303,
Newport News, VA 23606-4430

Ph: (757) 232-8769
Karen Lynn Knudsen, MD
5424 Discovery Park Boulevard, Bldg B Ste 201,
Williamsburg, VA 23188

Ph: (757) 903-4808

Reviews and Comments


Internal Medicine Doctors in Williamsburg, VA

Dr. Harold D Jones Iii, MD
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 4601 Ironbound Rd, Eastern State Hospital, Williamsburg, VA 23187
Phone: 757-253-5161    
Dr. Ralph R Dimattia, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 100 Sentara Cir, Williamsburg, VA 23188
Phone: 757-984-7218    Fax: 757-984-7210
William J Beneke, M.D
Endocrinology, Diabetes & Metabolism
Medicare: May Accept Medicare Assignments
Practice Location: 5215 Monticello Ave, Williamsburg, VA 23188
Phone: 757-229-1440    
Dr. Kathleen M Tylman, D.O.
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 477 Mclaws Cir, Suite 1, Williamsburg, VA 23185
Phone: 757-208-0005    Fax: 757-208-0006
Dr. Vicki Stone Wilhelm, MD
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 137 Kingspoint Dr, Williamsburg, VA 23185
Phone: 757-220-2718    
David Gordon Hundt, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 227 Mclaws Cir, Williamsburg, VA 23185
Phone: 757-564-8182    Fax: 757-564-0077
Abel Yimer, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 477 Mclaws Cir Ste 1, Williamsburg, VA 23185
Phone: 757-984-9675    Fax: 757-470-5401

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.