Hassna Atlassi, MD - Medicare Internal Medicine in Southborough, MA

Hassna Atlassi, MD is a medicare enrolled "Internal Medicine" physician in Southborough, Massachusetts. She graduated from medical school in 1994 and has 30 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Charles River Medical Associates, Pc and her current practice location is 162 Cordaville Rd, Southborough, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (508) 281-9471.

Hassna Atlassi is licensed to practice in Massachusetts (license number 211085) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1326107541.

Contact Information

Hassna Atlassi, MD
162 Cordaville Rd,
Southborough, MA 01772-1838
(508) 281-9471
Not Available

Map and Direction




Physician's Profile

Full NameHassna Atlassi
GenderFemale
SpecialityInternal Medicine
Experience30 Years
Location162 Cordaville Rd, Southborough, Massachusetts
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Hassna Atlassi graduated from medical school in 1994
  NPI Data:
  • NPI Number: 1326107541
  • Provider Enumeration Date: 12/06/2006
  • Last Update Date: 10/25/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5092771303
  • Enrollment ID: I20041208000859

Medical Identifiers

Medical identifiers for Hassna Atlassi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1326107541NPI-NPPES
2091551MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 211085 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Umass Memorial Healthcare-marlborough HospitalMarlborough, MAHospital
Metrowest Medical CenterFramingham, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Charles River Medical Associates, Pc347663045098

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. Hassna Atlassi allows following entities to bill medicare on her behalf.
Entity NameReliant Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720017528
PECOS PAC ID: 5597755322
Enrollment ID: O20040708000650
Entity NameCharles River Medical Associates, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598215204
PECOS PAC ID: 3476630450
Enrollment ID: O20161122000110

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. Hassna Atlassi 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
Hassna Atlassi, MD
171 Main St Ste 203b,
Ashland, MA 01721-1187

Ph: (508) 881-3029
Hassna Atlassi, MD
162 Cordaville Rd,
Southborough, MA 01772-1838

Ph: (508) 281-9471

Reviews and Comments


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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.