Dr Dagmara Osmanska-jac, MD - Medicare Internal Medicine in Chelmsford, MA

Dr Dagmara Osmanska-jac, MD is a medicare enrolled "Internal Medicine" physician in Chelmsford, Massachusetts. She graduated from medical school in 1990 and has 36 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Lawrence General Community Medical Service Pllc, New England Community Medical Services Pllc, New England Community Medical Services Pllc and her current practice location is 290 Littleton Rd Unit 3, Chelmsford, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (978) 685-2460.

Dr Dagmara Osmanska-jac is licensed to practice in Massachusetts (license number 238055) 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 1053413138.

Contact Information

Dr Dagmara Osmanska-jac, MD
290 Littleton Rd Unit 3,
Chelmsford, MA 01824-3429
(978) 685-2460
Not Available

Map and Direction




Physician's Profile

Full NameDr Dagmara Osmanska-jac
GenderFemale
SpecialityInternal Medicine
Experience36 Years
Location290 Littleton Rd Unit 3, Chelmsford, 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:
  • Dr Dagmara Osmanska-jac graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1053413138
  • Provider Enumeration Date: 09/01/2006
  • Last Update Date: 05/28/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7113088824
  • Enrollment ID: I20081212000213

Medical Identifiers

Medical identifiers for Dr Dagmara Osmanska-jac such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1053413138NPI-NPPES
110081539AMedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine K1892 (Texas)Secondary
207R00000XInternal Medicine 238055 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Lowell General HospitalLowell, MAHospital
Tufts Medical CenterBoston, MAHospital
Lahey Hospital & Medical Center, BurlingtonBurlington, MAHospital
Metrowest Medical CenterFramingham, MAHospital
Emerson Hospital -W concord, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Lawrence General Community Medical Service Pllc448694147352
New England Community Medical Services Pllc862810292853
New England Community Medical Services Pllc862810292853

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 Dagmara Osmanska-jac allows following entities to bill medicare on her behalf.
Entity NameIpc Hospitalists Of New England Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659555266
PECOS PAC ID: 7618051442
Enrollment ID: O20080303000565
Entity NameNew England Community Medical Services Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427376516
PECOS PAC ID: 8628102928
Enrollment ID: O20100820000851
Entity NameLawrence General Community Medical Service Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174076418
PECOS PAC ID: 4486941473
Enrollment ID: O20160919001845

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 Dagmara Osmanska-jac 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 Dagmara Osmanska-jac, MD
290 Littleton Rd Unit 3,
Chelmsford, MA 01824-3429

Ph: (978) 685-2460
Dr Dagmara Osmanska-jac, MD
290 Littleton Rd Unit 3,
Chelmsford, MA 01824-3429

Ph: (978) 685-2460

Reviews and Comments


Internal Medicine Doctors in Chelmsford, MA

Joe Joseph, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 290 Littleton Rd Unit 3, Chelmsford, MA 01824
Phone: 978-685-2460    Fax: 978-685-2572
Steven A Morgenstern, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 228 Billerica Rd, Internal Medicine, Chelmsford, MA 01824
Phone: 978-250-6100    Fax: 978-250-6471
Kenneth Francis Murphy, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 27 Village Square, Chelmsford, MA 01824
Phone: 978-256-6607    Fax: 978-250-8189
Anita Kumar, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 290 Littleton Rd Unit 3, Chelmsford, MA 01824
Phone: 978-685-2460    
Ankit Patel, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 290 Littleton Rd Unit 3, Chelmsford, MA 01824
Phone: 978-685-2460    
Nausheen Hassan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 290 Littleton Rd Unit 3, Chelmsford, MA 01824
Phone: 978-685-2460    

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.