Dr William J Riesen, MD in Mason City, IA - Medicare Internal Medicine

Dr William J Riesen, MD is a medicare enrolled "Internal Medicine" physician in Mason City, Iowa. He went to Perelman School Of Med At The University Of Pennsylvania and graduated in 1993 and has 31 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice North Iowa Mercy Clinics and his current practice location is 1010 4th St Sw Ste 305, Mason City, Iowa. You can reach out to his office (for appointments etc.) via phone at (641) 428-5700.

Dr William J Riesen is licensed to practice in Iowa (license number 31260) 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 1548377997.

Contact Information

	Dr William J Riesen, MD
	1010 4th St Sw Ste 305, Mason City, IA 50401-2801
	(641) 428-5700
	(641) 428-2515

Map and Direction

Physician's Profile

Full Name	Dr William J Riesen
Gender	Male
Speciality	Internal Medicine
Experience	31 Years
Location	1010 4th St Sw Ste 305, Mason 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 William J Riesen attended and graduated from Perelman School Of Med At The University Of Pennsylvania in 1993

NPI Data:

NPI Number: 1548377997
Provider Enumeration Date: 08/23/2006
Last Update Date: 08/11/2022

Medicare PECOS Information:

PECOS PAC ID: 8921146341
Enrollment ID: I20091105000048

Medical Identifiers

Medical identifiers for Dr William J Riesen such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1548377997	NPI	-	NPPES
46081	Other	IA	WELLMARK
4137984	Medicaid	IA

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	31260 (Iowa)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Mercyone North Iowa Home Care	Mason city, IA	Home health agency
Mercyone North Iowa Medical Center	Mason city, IA	Hospital
Kossuth Regional Health Center	Algona, IA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
North Iowa Mercy Clinics	7810809076	247

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 William J Riesen allows following entities to bill medicare on his behalf.

Entity Name	North Iowa Mercy Clinics
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1780278242 PECOS PAC ID: 7810809076 Enrollment ID: O20031105000273

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 William J Riesen 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 William J Riesen, MD 621 S Illinois Ave, Suite 103, Mason City, IA 50401-5489 Ph: (641) 494-3041	Dr William J Riesen, MD 1010 4th St Sw Ste 305, Mason City, IA 50401-2801 Ph: (641) 428-5700

Reviews and Comments

Internal Medicine Doctors in Mason City, IA

Burt Humburg, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1000 4th St Sw, Mason City, IA 50401 Phone: 641-428-7000 Fax: 641-428-6383
Sumathy Nagraj Iyengar, M.D., Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1000 4th St Sw, Mercy Medical Center-hospitalist Dept, Mason City, IA 50401 Phone: 641-428-7000
Mark C Johnson, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 910 N Eisenhower Ave, Mason City, IA 50401 Phone: 641-428-7799 Fax: 641-428-5274
Dr. Joseph Dean Mccracken, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1000 4th St Sw, Mason City, IA 50401 Phone: 641-428-6300 Fax: 641-428-6347
Mohamed Abd El Maksoud, Internal Medicine Medicare: Medicare Enrolled Practice Location: 1010 4th St Sw, Suite 305, Mason City, IA 50401 Phone: 641-428-5700 Fax: 641-428-2515
Nathaniel Hitt, DO Internal Medicine Medicare: Medicare Enrolled Practice Location: 621 S Illinois Ave Ste 100, Mason City, IA 50401 Phone: 641-428-6900 Fax: 641-428-3909
Dr. Byron T Beasley, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 250 S Crescent Dr, Mason City, IA 50401 Phone: 641-494-5300 Fax: 641-494-5329

Dr William J Riesen, MD - Medicare Internal Medicine in Mason City, IA