Dr Janarthanan Someswarananthan, MD - Medicare Internal Medicine in Chelmsford, MA

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Dr Janarthanan Someswarananthan, MD is a medicare enrolled "Internal Medicine" physician in Chelmsford, Massachusetts. He graduated from medical school in 1996 and has 30 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Beth Israel Lahey Health Primary Care, Inc, Lawrence General Community Medical Service Pllc, New England Community Medical Services Pllc, Lawrence General Community Medical Service Pllc, New England Community Medical Services Pllc and his current practice location is 290 Littleton Rd Unit 3, Chelmsford, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (978) 685-2460.

Dr Janarthanan Someswarananthan is licensed to practice in Massachusetts (license number 230684) 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 1134212830.

Contact Information

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

Map and Direction




Physician's Profile

Full NameDr Janarthanan Someswarananthan
GenderMale
SpecialityInternal Medicine
Experience30 Years
Location290 Littleton Rd Unit 3, Chelmsford, 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:
  • Dr Janarthanan Someswarananthan graduated from medical school in 1996
  NPI Data:
  • NPI Number: 1134212830
  • Provider Enumeration Date: 10/02/2006
  • Last Update Date: 04/13/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 1557466919
  • Enrollment ID: I20070413000564

Medical Identifiers

Medical identifiers for Dr Janarthanan Someswarananthan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134212830NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 230684 (Massachusetts)Primary
207R00000XInternal Medicine ME83087 (Florida)Secondary
208M00000XHospitalist 230684 (Massachusetts)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
CaretendersNeedham heights, MAHome health agency
Bayada Home Health Care, IncWilmington, MAHome health agency
Beth Israel Lahey Health At HomeBeverly, MAHome health agency
Right Care Services, IncLawrence, MAHome health agency
Compassus - Southern MassachusettsNorth andover, MAHospice
Care Dimensions, IncDanvers, MAHospice
Ascend HospiceWorcester, MAHospice
Harborside Hospice LlcPlaistow, NHHospice
Tufts Medicine Care At HomeLowell, MAHospice
Anna Jaques HospitalNewburyport, MAHospital
Beth Israel Deaconess Medical CenterBoston, MAHospital
Lahey Hospital & Medical Center, BurlingtonBurlington, MAHospital
Merrimack Health Methuen HospitalMethuen, MAHospital
Cedar View Rehabilitation And Healthcare CenterMethuen, MANursing home
Aspen Hill Rehabiliation & Healthcare CenterHaverhill, MANursing home
Willow Brook Rehabilitation And Healthcare CenterWilmington, MANursing home
SalemhavenSalem, NHNursing home
Adviniacare NewburyportNewburyport, MANursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Beth Israel Lahey Health Primary Care, Inc7719291434351
Lawrence General Community Medical Service Pllc448694147353
New England Community Medical Services Pllc862810292853
Lawrence General Community Medical Service Pllc448694147353
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 Janarthanan Someswarananthan allows following entities to bill medicare on his behalf.
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 NameSteward Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629398219
PECOS PAC ID: 2860688728
Enrollment ID: O20101119000332
Entity NamePathways Healthcare LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740529668
PECOS PAC ID: 8729215744
Enrollment ID: O20150421000951
Entity NameTodays Wellness PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891166559
PECOS PAC ID: 4082917067
Enrollment ID: O20160126000404
Entity NameBeth Israel Lahey Health Primary Care, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568292423
PECOS PAC ID: 7719291434
Enrollment ID: O20160517000441
Entity NameLowell General Inpatient Specialists PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649626391
PECOS PAC ID: 8729371380
Enrollment ID: O20160720001673
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
Entity NameWinchester Lahey Inpatient Specialists PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1144770629
PECOS PAC ID: 6608150149
Enrollment ID: O20170301002194
Entity NameLife Choice Hospice of Southern Massachusetts LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073138640
PECOS PAC ID: 3971741844
Enrollment ID: O20210607001367

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 Janarthanan Someswarananthan 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 Janarthanan Someswarananthan, MD
290 Littleton Rd Unit 3,
Chelmsford, MA 01824-3429

Ph: (978) 685-2460		Dr Janarthanan Someswarananthan, 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
Dr. Dagmara Osmanska-jac, M.D
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 290 Littleton Rd Unit 3, Chelmsford, MA 01824
Phone: 978-685-2460    
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.

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