RACHEL LYNN DUNCAN MD
Accepted Insurance for NPI 1639601628
Internal Medicine in Saint Louis, MO

Active since March 30, 2017PECOS EnrolledAccepts Medicare Assignment

74.59/100

CMS Quality Rating

3009 N BALLAS RD STE 390C, SAINT LOUIS, MO 63131(314) 996-5900 Get Directions

NPPES record last updated: September 22, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 6, 2024, Jul 3, 2020, May 11, 2020 and 1 more (4 updates tracked since 2017).

Does Dr. Duncan take my insurance?

UnitedHealthcare includes Dr. Duncan in 17 Missouri plans sold on HealthCare.gov for 2027, all on its Individual Exchange Benefit Plan Network.

InsurerUnitedHealthcare 17 plans

Call before you book: insurer directories can be out of date, so call the office at (314) 996-5900 to confirm your plan is accepted. These are Marketplace (ACA) plans only; employer, Medicare Advantage and Medicaid plans are not listed.

17 plans · 2027 plan year

Missouri plans 17 plans

Plans sold to Missouri residents. Costs are for the standard version of each plan.

UnitedHealthcare

17 plans · EPO

Accepting new patients

UHC Gold Copay Focus $0 Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx, $0 Insulin, No Referrals)EPOGold$095426MO0410018

UHC Gold Copay Focus+ $0 Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx, $0 Insulin, Dental + Vision, No Referrals)EPOGold$095426MO0420008

UHC Gold Advantage ($0 Virtual Urgent Care, $0 Insulin, No Referrals)EPOGold$2,00095426MO0410020

UHC Gold Advantage+ ($0 Virtual Urgent Care, $0 Insulin, Dental + Vision, No Referrals)EPOGold$2,00095426MO0420001

UHC Gold Standard ($0 Insulin, No Referrals)EPOGold$2,50095426MO0410009

UHC Gold Standard+ ($0 Insulin, Dental + Vision, No Referrals)EPOGold$2,50095426MO0420009

UHC Silver Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $0 Insulin, No Referrals)EPOSilver$095426MO0410006

UHC Silver Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, $0 Insulin, Dental + Vision, No Referrals)EPOSilver$095426MO0420007

UHC Silver Advantage ($0 Virtual Urgent Care, $0 Insulin, No Referrals)EPOSilver$3,50095426MO0410016

UHC Silver Advantage+ ($0 Virtual Urgent Care, $0 Insulin, Dental + Vision, No Referrals)EPOSilver$3,50095426MO0420002

UHC Silver Standard ($0 Insulin, No Referrals)EPOSilver$6,40095426MO0410008

UHC Silver Standard+ ($0 Insulin, Dental + Vision, No Referrals)EPOSilver$6,40095426MO0420004

UHC Bronze Essential ($0 Virtual Urgent Care, HSA, $0 Insulin, No Referrals)EPOBronze$11,75095426MO0410021

UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, HSA, $0 Insulin, No Referrals)EPOExpanded Bronze$095426MO0410019

UHC Bronze Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, HSA, $0 Insulin, Dental + Vision, No Referrals)EPOExpanded Bronze$095426MO0420006

UHC Bronze Standard (HSA, $0 Insulin, No Referrals)EPOExpanded Bronze$7,50095426MO0410013

UHC Bronze Standard+ (HSA, $0 Insulin, Dental + Vision, No Referrals)EPOExpanded Bronze$7,50095426MO0420005

Questions about Dr. Duncan’s insurance

Does Dr. Duncan take UnitedHealthcare?

For Missouri Marketplace plans, yes: UnitedHealthcare includes Dr. Duncan in 17 plans for 2027. Call the office at (314) 996-5900 to confirm your plan before booking.

Is Dr. Duncan accepting new patients?

The insurers that list Dr. Duncan report that Dr. Duncan is accepting new patients. Call the office at (314) 996-5900 to confirm your plan before booking.

Do I need a referral to see Dr. Duncan?

Not under the Missouri plans that list Dr. Duncan: the 2027 plan files say a specialist referral is not required.

Does Dr. Duncan accept Medicare?

Yes. CMS files show Dr. Duncan accepts Medicare assignment and is enrolled in PECOS, which allows ordering and referring for Medicare patients.

About this data

This page combines public files from insurers and from CMS. NPI Profile does not contract with insurers and does not decide who is in network.

Source	What it provides here	Source date
Insurer provider directory files	Which plans list this provider, network tier, accepting new patients, years listed. Insurers selling on HealthCare.gov must publish these files under CMS rules.	UnitedHealthcare: Nov 3, 2026
CMS Health Insurance Exchange public use files	Plan details and Summary of Benefits links for HealthCare.gov states.	Plan year 2027, Oct 20, 2026

Only Marketplace (ACA) plans are covered. Employer, Medicare Advantage and Medicaid managed care networks are not in these files.
Costs are for the standard version of each plan. People who qualify for cost-sharing reductions pay less on Silver plans.
Accepting new patients and network tier are reported by each insurer, and can differ from what the practice tells you.
Networks change during the year. Confirm with your insurer or the practice before booking.