Lydia K Rex, MD - Medicare Family Practice in Needham, MA

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Lydia K Rex, MD is a medicare enrolled "Family Medicine" physician in Needham, Massachusetts. She went to Tufts University School Of Medicine and graduated in 2020 and has 6 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Wellesley Family Care Associates Pc, Greater Lawrence Family Health Center Inc and her current practice location is 145 Rosemary Street, Suite C, Needham, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (781) 235-7900.

Lydia K Rex is licensed to practice in Massachusetts (license number 1019363) 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 1275159071.

Contact Information

Lydia K Rex, MD
145 Rosemary Street, Suite C,
Needham, MA 02494-3259
(781) 235-7900
(781) 237-9930

Map and Direction




Physician's Profile

Full NameLydia K Rex
GenderFemale
SpecialityFamily Practice
Experience6 Years
Location145 Rosemary Street, Needham, 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:
  • Lydia K Rex attended and graduated from Tufts University School Of Medicine in 2020
  NPI Data:
  • NPI Number: 1275159071
  • Provider Enumeration Date: 06/18/2020
  • Last Update Date: 07/13/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 2860819034
  • Enrollment ID: I20240718003464

Medical Identifiers

Medical identifiers for Lydia K Rex such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1275159071NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 285361 (Massachusetts)Secondary
207Q00000XFamily Medicine 1019363 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Merrimack Health Lawrence HospitalLawrence, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Wellesley Family Care Associates Pc599186141121
Greater Lawrence Family Health Center Inc0446221956118

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. Lydia K Rex allows following entities to bill medicare on her behalf.
Entity NameGreater Lawrence Family Health Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699774646
PECOS PAC ID: 0446221956
Enrollment ID: O20040805001067
Entity NameLawrence General Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750381281
PECOS PAC ID: 5092725200
Enrollment ID: O20060503000236
Entity NameWellesley Family Care Associates PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902056310
PECOS PAC ID: 5991861411
Enrollment ID: O20090309000562

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. Lydia K Rex 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
Lydia K Rex, MD
145 Rosemary Street, Suite C,
Needham, MA 02494-3259

Ph: (781) 235-7900		Lydia K Rex, MD
145 Rosemary Street, Suite C,
Needham, MA 02494-3259

Ph: (781) 235-7900

Reviews and Comments


Family Medicine Doctors in Needham, MA

Jessica A Santiccioli, FNP
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 145 Rosemary Street, Suite C, Needham, MA 02494
Phone: 781-235-7900    Fax: 781-237-9930
Patricia A Langill, FNP
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 87 Chestnut St, Needham, MA 02492
Phone: 781-444-5515    Fax: 781-444-1866
David R. Raymond, DNP, FNP
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 145 Rosemary Street, Suite C, Needham, MA 02494
Phone: 781-235-7900    Fax: 781-237-9930
Kristin B. Behenna, AGNP
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 145 Rosemary Street, Suite C, Needham, MA 02494
Phone: 781-235-7900    Fax: 781-235-9930
Mrs. Colleen M Levesque, FNP
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 145 Rosemary Street, Suite C, Needham, MA 02494
Phone: 781-235-7900    Fax: 781-237-9930
Dr. Jonathan E Snider, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 145 Rosemary Street, Suite C, Needham, MA 02494
Phone: 781-235-7900    Fax: 781-237-9930
Jonathan B. Yoder, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 392 Chestnut St, Suite 100, Needham, MA 02492
Phone: 617-754-0650    

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.