Calvin Ryan Williams, - Medicare Obstetrics/gynecology in Oak Ridge, TN

Calvin Ryan Williams, is a medicare enrolled "Obstetrics & Gynecology" physician in Oak Ridge, Tennessee. He went to Lincoln Memorial University Medical Department and graduated in 2019 and has 6 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Obstetric And Gyncologic Assocs Of Oak Ridge and his current practice location is 988 Oak Ridge Tpke Ste 140, Oak Ridge, Tennessee. You can reach out to his office (for appointments etc.) via phone at (865) 483-7415.

Calvin Ryan Williams is licensed to practice in Tennessee (license number 0000005206) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1932664414.

Contact Information

Calvin Ryan Williams,
988 Oak Ridge Tpke Ste 140,
Oak Ridge, TN 37830-6919
(865) 483-7415
Not Available

Map and Direction




Physician's Profile

Full NameCalvin Ryan Williams
GenderMale
SpecialityObstetrics/gynecology
Experience6 Years
Location988 Oak Ridge Tpke Ste 140, Oak Ridge, Tennessee
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Calvin Ryan Williams attended and graduated from Lincoln Memorial University Medical Department in 2019
  NPI Data:
  • NPI Number: 1932664414
  • Provider Enumeration Date: 02/08/2019
  • Last Update Date: 08/09/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0648632455
  • Enrollment ID: I20230810002681

Medical Identifiers

Medical identifiers for Calvin Ryan Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1932664414NPI-NPPES
15885362OtherCAQH PROVIDER ID

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 0000005206 (Tennessee)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Obstetric And Gyncologic Assocs Of Oak Ridge09413772536

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. Calvin Ryan Williams allows following entities to bill medicare on his behalf.
Entity NameObstetric & Gyncologic Assocs Of Oak Ridge
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1639269822
PECOS PAC ID: 0941377253
Enrollment ID: O20080927000160

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. Calvin Ryan Williams 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
Calvin Ryan Williams,
300 S Tulane Ave Apt 1203,
Oak Ridge, TN 37830-6772

Ph: (646) 647-0514
Calvin Ryan Williams,
988 Oak Ridge Tpke Ste 140,
Oak Ridge, TN 37830-6919

Ph: (865) 483-7415

Reviews and Comments


Obstetrics & Gynecology Doctors in Oak Ridge, TN

Dr. Scott W Peters, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 988 Oak Ridge Tpke, Suite 140, Oak Ridge, TN 37830
Phone: 865-483-7415    
Dr. Kathryn J Hayes, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 988 Oak Ridge Tpke, Suite 140, Oak Ridge, TN 37830
Phone: 865-483-7415    Fax: 865-483-7980
Katie Robertson, DO
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 988 Oak Ridge Tpke Ste 140, Oak Ridge, TN 37830
Phone: 541-951-1229    
Dr. Joseph B Carter, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 988 Oak Ridge Tpke, Suite 140, Oak Ridge, TN 37830
Phone: 865-483-7415    Fax: 865-483-7980
Dr. Charles E Darling, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 200 New York Ave Ste 150, Oak Ridge, TN 37830
Phone: 865-481-0200    Fax: 865-481-3085
Dr. Thomas H Metcalf, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 988 Oak Ridge Tpke, Suite 140, Oak Ridge, TN 37830
Phone: 865-483-7415    Fax: 865-483-7980
Regina Dill,
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 988 Oak Ridge Tpke Ste 140, Oak Ridge, TN 37830
Phone: 865-483-7415    Fax: 865-483-7980

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.