Rachel Lynn Duncan, MD - Medicare Internal Medicine in Saint Louis, MO

Rachel Lynn Duncan, MD is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. She went to Texas A & M University System, Hsc, College Of Medicine and graduated in 2017 and has 7 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Physician Groups Lc and her current practice location is 3009 N Ballas Rd Ste 390c, Saint Louis, Missouri. You can reach out to her office (for appointments etc.) via phone at (314) 996-5900.

Rachel Lynn Duncan is licensed to practice in Missouri (license number 2023042765) 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 1639601628.

Contact Information

Rachel Lynn Duncan, MD
3009 N Ballas Rd Ste 390c,
Saint Louis, MO 63131-2322
(314) 996-5900
Not Available

Map and Direction




Physician's Profile

Full NameRachel Lynn Duncan
GenderFemale
SpecialityInternal Medicine
Experience7 Years
Location3009 N Ballas Rd Ste 390c, Saint Louis, Missouri
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:
  • Rachel Lynn Duncan attended and graduated from Texas A & M University System, Hsc, College Of Medicine in 2017
  NPI Data:
  • NPI Number: 1639601628
  • Provider Enumeration Date: 03/30/2017
  • Last Update Date: 03/06/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3173945425
  • Enrollment ID: I20231229000863

Medical Identifiers

Medical identifiers for Rachel Lynn Duncan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1639601628NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist S6164 (Texas)Secondary
207R00000XInternal Medicine 2023042765 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Missouri Baptist Medical CenterTown and country, MOHospital
Barnes-jewish West County HospitalCreve coeur, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Physician Groups Lc3072421254427

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. Rachel Lynn Duncan allows following entities to bill medicare on her behalf.
Entity NamePhysician Groups Lc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285664268
PECOS PAC ID: 3072421254
Enrollment ID: O20040220001157

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. Rachel Lynn Duncan 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
Rachel Lynn Duncan, MD
660 Mason Ridge Center Dr Ste 300,
Saint Louis, MO 63141-8512

Ph: (314) 448-3791
Rachel Lynn Duncan, MD
3009 N Ballas Rd Ste 390c,
Saint Louis, MO 63131-2322

Ph: (314) 996-5900

Reviews and Comments


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Dr. Erin Leigh Dyer, MD
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Phone: 314-362-5060    Fax: 314-362-6959

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.