Mrs Michelle Marie Koester, WHNP in Saint Peters, MO

Mrs Michelle Marie Koester, WHNP is a medicare enrolled "Nurse Practitioner" in Saint Peters, Missouri. She graduated from nursing school in 2011 and has 15 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice St Anthonys Physician Organization Hospitalist Services Lc and her current practice location is 201 Bjc Saint Peters Dr Ste 200, Saint Peters, Missouri. You can reach out to her office (for appointments etc.) via phone at (636) 916-9615.

Mrs Michelle Marie Koester is licensed to practice in Missouri (license number 2000147926) 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 1881962843.

Contact Information

	Mrs Michelle Marie Koester, WHNP
	201 Bjc Saint Peters Dr Ste 200, Saint Peters, MO 63376-3386
	(636) 916-9615
	(636) 916-9850

Map and Direction

Provider's Profile

Full Name	Mrs Michelle Marie Koester
Gender	Female
Speciality	Nurse Practitioner
Experience	15 Years
Location	201 Bjc Saint Peters Dr Ste 200, Saint Peters, Missouri
Accepts Medicare Assignments	Yes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Mrs Michelle Marie Koester graduated from nursing school in 2011

NPI Data:

NPI Number: 1881962843
Provider Enumeration Date: 12/06/2011
Last Update Date: 01/29/2026

Medicare PECOS Information:

PECOS PAC ID: 2567607641
Enrollment ID: I20130320000191

Medical Identifiers

Medical identifiers for Mrs Michelle Marie Koester such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1881962843	NPI	-	NPPES
420012381	Medicaid	MO

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
363L00000X	Nurse Practitioner	2000147926 (Missouri)	Primary
363LW0102X	Nurse Practitioner - Women's Health	2011038536 (Missouri)	Secondary

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
St Anthonys Physician Organization Hospitalist Services Lc	5092980656	122

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. Mrs Michelle Marie Koester allows following entities to bill medicare on her behalf.

Entity Name	St Anthonys Physician Organization Hospitalist Services Lc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1407216336 PECOS PAC ID: 5092980656 Enrollment ID: O20111208000771

Entity Name	Mercy Womens Services Llc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1629327788 PECOS PAC ID: 2466699814 Enrollment ID: O20130502000534

Entity Name	Sound Physicians Of Illinois Llc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1043598865 PECOS PAC ID: 1557533734 Enrollment ID: O20170519000666

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. Mrs Michelle Marie Koester 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 Address	Practice Location Address
Mrs Michelle Marie Koester, WHNP Po Box 959354, Saint Louis, MO 63195-9354 Ph: (636) 916-9615	Mrs Michelle Marie Koester, WHNP 201 Bjc Saint Peters Dr Ste 200, Saint Peters, MO 63376-3386 Ph: (636) 916-9615

Reviews and Comments

Nurse Practitioner Nurses in Saint Peters, MO

Carol Berger, DNP, APRN, FNP-C Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: Attention Medical Staff Office, 10 Hospital Drive, Saint Peters, MO 63376 Phone: 314-317-0600
Michelle L. Maloney, RN BC-ANP Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: 10 Hospital Dr, Ste 100, Saint Peters, MO 63376 Phone: 636-916-7272 Fax: 636-916-7274
Mrs. Chelsey Jo Becker, FNP Nurse Practitioner Medicare: Not Enrolled in Medicare Practice Location: 400 Mid Rivers Mall Dr, Saint Peters, MO 63376 Phone: 866-389-2727
Mrs. Laura Ann Benack, NP Nurse Practitioner Medicare: Not Enrolled in Medicare Practice Location: 150 Entrance Way, Saint Peters, MO 63376 Phone: 636-916-9920 Fax: 636-916-9176
Elizabeth Gordon, FNP Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: 4800 Mexico Rd, Suite 102, Saint Peters, MO 63376 Phone: 636-441-0067 Fax: 636-441-1062
Samantha Nicole Lillico, FNP-C Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: 3701 N Saint Peters Pkwy Ste B2, Saint Peters, MO 63376 Phone: 636-681-3166
Ms. Jennifer Louise Keen, APN Nurse Practitioner Medicare: Medicare Enrolled Practice Location: 6 Jungermann Cir, Suite 209, Saint Peters, MO 63376 Phone: 636-916-9080 Fax: 636-916-9332

Mrs Michelle Marie Koester, WHNP - Medicare Nurse Practitioner in Saint Peters, MO