John Mark Ryan, MD in Providence, RI - Medicare Internal Medicine

John Mark Ryan, MD is a medicare enrolled "Internal Medicine" physician in Providence, Rhode Island. He went to Warren Alpert Medical School Of Brown University and graduated in 1984 and has 41 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Brown Medicine and his current practice location is 245 Chapman St, Providence, Rhode Island. You can reach out to his office (for appointments etc.) via phone at (401) 444-4741.

John Mark Ryan is licensed to practice in Rhode Island (license number MD07097) 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 1841230968.

Contact Information

	John Mark Ryan, MD
	245 Chapman St, Providence, RI 02905-4539
	(401) 444-4741
	(401) 444-4445

Map and Direction

Physician's Profile

Full Name	John Mark Ryan
Gender	Male
Speciality	Internal Medicine
Experience	41 Years
Location	245 Chapman St, Providence, Rhode Island
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:

John Mark Ryan attended and graduated from Warren Alpert Medical School Of Brown University in 1984

NPI Data:

NPI Number: 1841230968
Provider Enumeration Date: 06/07/2006
Last Update Date: 08/14/2025

Medicare PECOS Information:

PECOS PAC ID: 3173507746
Enrollment ID: I20040614000707

Medical Identifiers

Medical identifiers for John Mark Ryan such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1841230968	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	MD07097 (Rhode Island)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Cathleen Naughton Associates	Warwick, RI	Home health agency
Amedisys Home Health Care	Warwick, RI	Home health agency
The Miriam Hospital	Providence, RI	Hospital
Kent County Memorial Hospital	Warwick, RI	Hospital
South County Hospital Inc	Wakefield, RI	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Brown Medicine	0446159776	220

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. John Mark Ryan allows following entities to bill medicare on his behalf.

Entity Name	Brown Medicine
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1689626764 PECOS PAC ID: 0446159776 Enrollment ID: O20040219000354

Entity Name	Rhode Island Hospital
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1154537520 PECOS PAC ID: 8921900044 Enrollment ID: O20141017000105

Entity Name	The Miriam Hospital
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1598978744 PECOS PAC ID: 6901796408 Enrollment ID: O20170303000645

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. John Mark Ryan 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
John Mark Ryan, MD Dept 3010, Po Box 986524, Boston, MA 02298-6524 Ph: (401) 443-4992	John Mark Ryan, MD 245 Chapman St, Providence, RI 02905-4539 Ph: (401) 444-4741

Reviews and Comments

Internal Medicine Doctors in Providence, RI

Christopher Donald Palmer, DO Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 101 Dudley St, Providence, RI 02905 Phone: 401-274-1122 Fax: 401-453-7597
Martha Catherine Trimbur, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 245 Chapman St Ste 300, Providence, RI 02905 Phone: 401-444-4741 Fax: 401-444-4445
Karl Herman, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 164 Summit Ave, Fain Bldg., Providence, RI 02906 Phone: 401-793-4489 Fax: 401-793-4047
Muhammad Baig, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 164 Summit Ave, Fain Bldg, Providence, RI 02906 Phone: 401-793-4489 Fax: 401-793-4047
Gary M Katzman, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 208 Collyer Street, Suite 100, Providence, RI 02904 Phone: 401-793-7191 Fax: 401-793-7200
Thomas Fairweather Crain, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 164 Summit Ave, Providence, RI 02906 Phone: 401-793-4630
James Atkinson, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 164 Summit Ave, Providence, RI 02906 Phone: 401-793-4500

John Mark Ryan, MD - Medicare Internal Medicine in Providence, RI