Dr Mark M Yun, MD - Medicare Internal Medicine in Sturbridge, MA

Dr Mark M Yun, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Sturbridge, Massachusetts. His current practice location is 198 Charlton Rd, Sturbridge, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 765-7878.

Dr Mark M Yun is licensed to practice in Massachusetts (license number 1015976) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1326538687.

Contact Information

Dr Mark M Yun, MD
198 Charlton Rd,
Sturbridge, MA 01566-1571
(508) 765-7878
Not Available



Physician's Profile

Full NameDr Mark M Yun
GenderMale
SpecialityInternal Medicine - Rheumatology
Location198 Charlton Rd, Sturbridge, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1326538687
  • Provider Enumeration Date: 05/12/2018
  • Last Update Date: 10/03/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2567819774
  • Enrollment ID: I20231109002064

Medical Identifiers

Medical identifiers for Dr Mark M Yun such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1326538687NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 1015976 (Massachusetts)Primary

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 M Yun allows following entities to bill medicare on his behalf.
Entity NameUmass Memorial Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760445373
PECOS PAC ID: 4284539891
Enrollment ID: O20040113000267

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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 M Yun 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 AddressPractice Location Address
Dr Mark M Yun, MD
Po Box 415348,
Boston, MA 02241-5348

Ph: (800) 225-8885
Dr Mark M Yun, MD
198 Charlton Rd,
Sturbridge, MA 01566-1571

Ph: (508) 765-7878

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Internal Medicine Doctors in Sturbridge, MA

Dr. David Michael Erani, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 128 Main St, Suite 2, Sturbridge, MA 01566
Phone: 508-347-7585    Fax: 508-347-7538
Sorin Cantaragiu Herscovici, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 198 Charlton Rd, Sturbridge, MA 01566
Phone: 508-347-7585    Fax: 508-347-7538

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