Dr Frederick Richard Stack, MD in Sioux City, IA

Dr Frederick Richard Stack, MD is a medicare enrolled "Internal Medicine" physician in Sioux City, Iowa. He went to University Of Nebraska College Of Medicine and graduated in 1991 and has 35 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Benefis Hospitals Inc, Banner-university Medical Group, Pines Health Services, Eastern Maine Medical Center and his current practice location is 801 5th St, Sioux City, Iowa. You can reach out to his office (for appointments etc.) via phone at (712) 279-2010.

Dr Frederick Richard Stack is licensed to practice in Iowa (license number MD-46368) 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 1548256977.

Contact Information

	Dr Frederick Richard Stack, MD
	801 5th St, Sioux City, IA 51101-1326
	(712) 279-2010
	(712) 279-2034

Map and Direction

Physician's Profile

Full Name	Dr Frederick Richard Stack
Gender	Male
Speciality	Internal Medicine
Experience	35 Years
Location	801 5th St, Sioux City, Iowa
Accepts Medicare Assignments	Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Dr Frederick Richard Stack attended and graduated from University Of Nebraska College Of Medicine in 1991

NPI Data:

NPI Number: 1548256977
Provider Enumeration Date: 09/21/2005
Last Update Date: 01/28/2026

Medicare PECOS Information:

PECOS PAC ID: 9638149230
Enrollment ID: I20210122002608

Medical Identifiers

Medical identifiers for Dr Frederick Richard Stack such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1548256977	NPI	-	NPPES
436693002	Medicaid	AZ
AZ0866740	Other	AZ	BLUE CROSS BLUEE SHIELD
110208816	Other	AZ	MEDICARE RAILROAD

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	91977 (Montana)	Secondary
207R00000X	Internal Medicine	MD-46368 (Iowa)	Primary
174400000X	Specialist	24459 (Arizona)	Secondary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Benefis Hospitals Inc	Great falls, MT	Hospital
Banner-university Medical Center South Campus	Tucson, AZ	Hospital
Eastern Maine Medical Center	Bangor, ME	Hospital
Cary Medical Center	Caribou, ME	Hospital
Banner - University Medical Center Tucson Campus	Tucson, AZ	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Benefis Hospitals Inc	1153235296	401
Banner-university Medical Group	7719899871	1069
Pines Health Services	0749275113	59
Eastern Maine Medical Center	2062315161	663

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. Dr Frederick Richard Stack allows following entities to bill medicare on his behalf.

Entity Name	St Peters Health
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1205025145 PECOS PAC ID: 7911814926 Enrollment ID: O20031204001245

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. Dr Frederick Richard Stack 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
Dr Frederick Richard Stack, MD 6909 East Ray Road #15-114, Chandler, AZ 85226 Ph: (520) 421-1122	Dr Frederick Richard Stack, MD 801 5th St, Sioux City, IA 51101-1326 Ph: (712) 279-2010

Reviews and Comments

Internal Medicine Doctors in Sioux City, IA

Sharon K Fey, PA C Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 700 4th Street, Ste 410, Sioux City, IA 51101 Phone: 712-255-7746 Fax: 712-255-0829
Kantima Phisitkul, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 2720 Stone Park Blvd, Sioux City, IA 51104 Phone: 712-279-3500 Fax: 712-279-3640
Dr. Peter Jon Anderson, M.D. Internal Medicine Medicare: Medicare Enrolled Practice Location: 801 5th St, Sioux City, IA 51101 Phone: 712-279-2010 Fax: 712-279-2034
Dr. Robert Mark Stewart, M.D. Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 2730 Pierce St, Suite 401, Sioux City, IA 51104 Phone: 712-255-8827 Fax: 712-255-4862
William R Wanner, M.D. Internal Medicine Medicare: Medicare Enrolled Practice Location: 5885 Sunnybrook Dr, Suite L-200, Sioux City, IA 51106 Phone: 712-239-4702 Fax: 712-224-5898
Roque Bernardo Arteaga, M.D., FACC Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 5885 Sunnybrook Dr, Suite L-200, Sioux City, IA 51106 Phone: 712-239-4702 Fax: 712-224-5898
Dr. Olusola Ogundipe, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 801 5th St, Sioux City, IA 51101 Phone: 712-279-2010

Dr Frederick Richard Stack, MD - Medicare Internal Medicine in Sioux City, IA