Dr Patrick Leong, DO - Medicare Family Practice in Somerville, MA

Dr Patrick Leong, DO is a medicare enrolled "Internal Medicine" physician in Somerville, Massachusetts. He graduated from medical school in 1983 and has 41 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Massachusetts General Physicians Organization Inc, Medical Affiliates Of Cape Cod Inc and his current practice location is 440 Foley St, Somerville, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (857) 282-0777.

Dr Patrick Leong is licensed to practice in Massachusetts (license number 151924) 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 1447237003.

Contact Information

Dr Patrick Leong, DO
440 Foley St,
Somerville, MA 02145-1213
(857) 282-0777
Not Available

Map and Direction




Physician's Profile

Full NameDr Patrick Leong
GenderMale
SpecialityFamily Practice
Experience41 Years
Location440 Foley St, Somerville, 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 Patrick Leong graduated from medical school in 1983
  NPI Data:
  • NPI Number: 1447237003
  • Provider Enumeration Date: 12/27/2005
  • Last Update Date: 08/02/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6103843057
  • Enrollment ID: I20220404001227

Medical Identifiers

Medical identifiers for Dr Patrick Leong such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447237003NPI-NPPES
30005217MedicaidNH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 7813 (New Hampshire)Secondary
207R00000XInternal Medicine 151924 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Massachusetts General HospitalBoston, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Massachusetts General Physicians Organization Inc24663658203085
Medical Affiliates Of Cape Cod Inc3577471564190

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 Patrick Leong allows following entities to bill medicare on his behalf.
Entity NameMassachusetts General Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801874573
PECOS PAC ID: 2466365820
Enrollment ID: O20031111000434
Entity NameMedical Affiliates Of Cape Cod Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770534927
PECOS PAC ID: 3577471564
Enrollment ID: O20040510001010
Entity NameThe General Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023049236
PECOS PAC ID: 6507803806
Enrollment ID: O20080313000351

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 Patrick Leong 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 Patrick Leong, DO
440 Foley St,
Somerville, MA 02145-1213

Ph: (857) 282-0777
Dr Patrick Leong, DO
440 Foley St,
Somerville, MA 02145-1213

Ph: (857) 282-0777

Reviews and Comments


Internal Medicine Doctors in Somerville, MA

Arturo Villarreal-verdecia, MD
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James C Liu, M.D.
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Tatiana Slavsky, M.D.
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Ingo H Stubbe, MD
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Dr. Rebecca Elysia Pappo Rogers, M.D.
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Hillary G Worthen, MD
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Phone: 617-665-2347    
Ruth P Hertzman-miller, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 236 Highland Ave, Cha - Somerville Hospital Primary Care, Somerville, MA 02143
Phone: 617-591-6300    

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.