Katherine Madison Macmillan, MD in Simpsonville, SC

Katherine Madison Macmillan, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Simpsonville, South Carolina. She graduated from medical school in 2017 and has 8 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Mayo Clinic Arizona, Prisma Health University Medical Group and her current practice location is 727 Se Main St Ste 340, Simpsonville, South Carolina. You can reach out to her office (for appointments etc.) via phone at (864) 455-2888.

Katherine Madison Macmillan is licensed to practice in South Carolina (license number 85580) 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 1780117416.

Contact Information

	Katherine Madison Macmillan, MD
	727 Se Main St Ste 340, Simpsonville, SC 29681-3249
	(864) 455-2888
	(864) 455-2885

Map and Direction

Physician's Profile

Full Name	Katherine Madison Macmillan
Gender	Female
Speciality	Gastroenterology
Experience	8 Years
Location	727 Se Main St Ste 340, Simpsonville, South Carolina
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:

Katherine Madison Macmillan graduated from medical school in 2017

NPI Data:

NPI Number: 1780117416
Provider Enumeration Date: 04/10/2017
Last Update Date: 10/15/2025

Medicare PECOS Information:

PECOS PAC ID: 8426312141
Enrollment ID: I20240711002081

Medical Identifiers

Medical identifiers for Katherine Madison Macmillan such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1780117416	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	85580 (South Carolina)	Secondary
207R00000X	Internal Medicine	009641 (Georgia)	Secondary
207RG0100X	Internal Medicine - Gastroenterology	85580 (South Carolina)	Primary
207RG0100X	Internal Medicine - Gastroenterology	72379 (Arizona)	Secondary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Mayo Clinic Hospital	Phoenix, AZ	Hospital
Prisma Health Greenville Memorial Hospital	Greenville, SC	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Mayo Clinic Arizona	7012829930	1503
Prisma Health University Medical Group	8325950983	2220

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. Katherine Madison Macmillan allows following entities to bill medicare on her behalf.

Entity Name	Mayo Clinic Arizona
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1558332494 PECOS PAC ID: 7012829930 Enrollment ID: O20031105000782

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. Katherine Madison Macmillan 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
Katherine Madison Macmillan, MD 300 E Mcbee Ave Ste 300, Greenville, SC 29601-2899 Ph: (864) 522-8603	Katherine Madison Macmillan, MD 727 Se Main St Ste 340, Simpsonville, SC 29681-3249 Ph: (864) 455-2888

Reviews and Comments

Internal Medicine Doctors in Simpsonville, SC

Sarah Malloy Kuhn, MD Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 727 Se Main St Ste 300, Simpsonville, SC 29681 Phone: 864-522-1170
Debra Ann Wagner, MD Gastroenterology Medicare: Medicare Enrolled Practice Location: 727 Se Main St, Suite 300, Simpsonville, SC 29681 Phone: 864-522-1170
Dr. Jason Cuomo, M.D. Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 3970 Grandview Dr Ste 2300, Simpsonville, SC 29680 Phone: 864-235-7665 Fax: 864-233-5971
Sarah Beth Wells, M.D. Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 727 Se Main St Ste 320, Simpsonville, SC 29681 Phone: 864-454-6440 Fax: 864-454-6445
Travis Charles Sizemore, D.O., MPH Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 103 Fairview Pointe Dr, Simpsonville, SC 29681 Phone: 864-881-8500 Fax: 864-278-0526
Krishna Kumar Pudi, MD PA Gastroenterology Medicare: Not Enrolled in Medicare Practice Location: 110 Hospital Dr # A, Simpsonville, SC 29681 Phone: 864-963-9090 Fax: 864-962-0610
Dr. James Coan Mcalpine Iii, Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 312 Harrison Bridge Rd, Simpsonville, SC 29680 Phone: 864-603-5600 Fax: 864-603-5601

Katherine Madison Macmillan, MD - Medicare Gastroenterology in Simpsonville, SC