Dr Mark Francis Grenquist, DO in Chelsea, MI

Dr Mark Francis Grenquist, DO is a medicare enrolled "Internal Medicine" physician in Chelsea, Michigan. He went to Michigan State University College Of Human Medicine and graduated in 2001 and has 23 years of diverse experience with area of expertise as Hospitalist. He is a member of the group practice Apogee Medical Group Michigan Pc and his current practice location is 775 S Main St, Chelsea, Michigan. You can reach out to his office (for appointments etc.) via phone at (734) 593-6000.

Dr Mark Francis Grenquist is licensed to practice in Michigan (license number 5101014936) 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 1942300454.

Contact Information

	Dr Mark Francis Grenquist, DO
	775 S Main St, Chelsea, MI 48118-1383
	(734) 593-6000
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Mark Francis Grenquist
Gender	Male
Speciality	Hospitalist
Experience	23 Years
Location	775 S Main St, Chelsea, Michigan
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 Mark Francis Grenquist attended and graduated from Michigan State University College Of Human Medicine in 2001

NPI Data:

NPI Number: 1942300454
Provider Enumeration Date: 09/24/2006
Last Update Date: 09/06/2016

Medicare PECOS Information:

PECOS PAC ID: 9032179866
Enrollment ID: I20041015000099

Medical Identifiers

Medical identifiers for Dr Mark Francis Grenquist such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1942300454	NPI	-	NPPES
1942300454	Medicaid	MI
1417961137	Other	MI	BCBSM - BRONSON BATTLE CREEK
5331090	Other	MI	BCBS INDIVIDUAL PIN
4631106	Medicaid	MI

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	5101014936 (Michigan)	Primary
208M00000X	Hospitalist	5101014936 (Michigan)	Secondary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Oaklawn Hospital	Marshall, MI	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Apogee Medical Group Michigan Pc	9931347879	38

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 Mark Francis Grenquist allows following entities to bill medicare on his behalf.

Entity Name	Iha Health Services Corporation
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1457408965 PECOS PAC ID: 2466351440 Enrollment ID: O20040108000355

Entity Name	Apogee Medical Group Michigan Pc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1053655134 PECOS PAC ID: 9931347879 Enrollment ID: O20130604000688

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 Mark Francis Grenquist 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 Mark Francis Grenquist, DO 24 Frank Lloyd Wright Dr, Po Box 0446 - Lobby J, Ann Arbor, MI 48105-9484 Ph: (734) 747-6766	Dr Mark Francis Grenquist, DO 775 S Main St, Chelsea, MI 48118-1383 Ph: (734) 593-6000

Reviews and Comments

Internal Medicine Doctors in Chelsea, MI

Sarah Bur, Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 350 N Main St, Suite 100, Chelsea, MI 48118 Phone: 734-433-1500 Fax: 734-433-1400
Dr. Steven A Yarows, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 128 Van Buren St, Chelsea, MI 48118 Phone: 734-475-8677 Fax: 734-475-8677
Dr. Martin P. Gleespen, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1290 S Main St, Suite C, Chelsea, MI 48118 Phone: 734-475-1107 Fax: 734-475-9230
Fazleomar Mahmood, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 14650 E Old Us Highway 12, Suite 301, Chelsea, MI 48118 Phone: 734-593-5990 Fax: 734-593-5995
Rubens Ribeiro, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 775 S Main St, Chelsea, MI 48118 Phone: 734-593-6000
Diane Marie Howlin, M.D. Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 1620 Commerce Park Dr, Suite 100, Chelsea, MI 48118 Phone: 734-475-2921 Fax: 734-475-2945
Dr. James Friere Skiba Jr., MD, MPH Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 775 S Main St, Chelsea, MI 48118 Phone: 734-593-6000

Dr Mark Francis Grenquist, DO - Medicare Hospitalist in Chelsea, MI