Rock H Jean-guillaume, DO - Medicare Emergency Medicine in Holden, MA

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Rock H Jean-guillaume, DO is a medicare enrolled "Emergency Medicine" physician in Holden, Massachusetts. He went to Michigan State University College Of Osteopathic Medicine and graduated in 1998 and has 28 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Acs Primary Care Physicians - Southeast Pc and his current practice location is 5 Shrewsbury St Ste D, Holden, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 829-3800.

Rock H Jean-guillaume is licensed to practice in Massachusetts (license number 215241) 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 1730157918.

Contact Information

Rock H Jean-guillaume, DO
5 Shrewsbury St Ste D,
Holden, MA 01520
(508) 829-3800
(508) 829-3802

Map and Direction




Physician's Profile

Full NameRock H Jean-guillaume
GenderMale
SpecialityEmergency Medicine
Experience28 Years
Location5 Shrewsbury St Ste D, Holden, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Rock H Jean-guillaume attended and graduated from Michigan State University College Of Osteopathic Medicine in 1998
  NPI Data:
  • NPI Number: 1730157918
  • Provider Enumeration Date: 03/14/2006
  • Last Update Date: 11/22/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 8426042839
  • Enrollment ID: I20200729000554

Medical Identifiers

Medical identifiers for Rock H Jean-guillaume such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1730157918NPI-NPPES
110006102AMedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 215241 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mcleod Loris HospitalLoris, SCHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Acs Primary Care Physicians - Southeast Pc5193620714354

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. Rock H Jean-guillaume allows following entities to bill medicare on his behalf.
Entity NameConway Hospital Emergency Professional Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487844510
PECOS PAC ID: 2163516980
Enrollment ID: O20070924000348
Entity NameAcs Primary Care Physicians - Southeast Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861430555
PECOS PAC ID: 5193620714
Enrollment ID: O20090401000270

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. Rock H Jean-guillaume 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
Rock H Jean-guillaume, DO
5 Shrewsbury St Ste D,
Holden, MA 01520-1960

Ph: (508) 829-3810		Rock H Jean-guillaume, DO
5 Shrewsbury St Ste D,
Holden, MA 01520

Ph: (508) 829-3800

Reviews and Comments


Emergency Medicine Doctors in Holden, MA

Dr. Richard Julien Freniere, DO
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 5 Shrewsbury St Ste D, Holden, MA 01520
Phone: 508-829-3800    Fax: 508-829-3802
William Charles O'callahan Jr., MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5 Shrewsbury St Ste D, Holden, MA 01520
Phone: 508-829-3800    Fax: 508-829-3802
Dr. Donald P Jackel, DO
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 5 Shrewsbury St Ste D, Holden, MA 01520
Phone: 508-829-3800    Fax: 508-829-3802
Dr. Peter W Rugg, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 5 Shrewsbury St Ste D, Holden, MA 01520
Phone: 508-829-3800    Fax: 508-829-3802
Dr. Allison Nourielle Darvish, DO
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Lexington Cir, Holden, MA 01520
Phone: 774-239-8503    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.