Mr Matthew Isaac Lyons, - Medicare Internal Medicine in Walnut Creek, CA

Mr Matthew Isaac Lyons, is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Walnut Creek, California. His current practice location is 2700 Ygnacio Valley Rd Ste 100, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 939-3050.

Mr Matthew Isaac Lyons is licensed to practice in California (license number A167951) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1457714933.

Contact Information

Mr Matthew Isaac Lyons,
2700 Ygnacio Valley Rd Ste 100,
Walnut Creek, CA 94598-3462
(925) 939-3050
(925) 939-3057

Map and Direction




Physician's Profile

Full NameMr Matthew Isaac Lyons
GenderMale
SpecialityInternal Medicine - Pulmonary Disease
Location2700 Ygnacio Valley Rd Ste 100, Walnut Creek, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1457714933
  • Provider Enumeration Date: 04/01/2016
  • Last Update Date: 04/17/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3971890690
  • Enrollment ID: I20230602001412

Medical Identifiers

Medical identifiers for Mr Matthew Isaac Lyons such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1457714933NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine A167951 (California)Secondary
207RP1001XInternal Medicine - Pulmonary Disease A167951 (California)Primary

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. Mr Matthew Isaac Lyons allows following entities to bill medicare on his behalf.
Entity NameMuir Pulmonary Critical Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245225861
PECOS PAC ID: 3476449943
Enrollment ID: O20040223001277
Entity NameJohn Muir Trauma Physicians Billing Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093864837
PECOS PAC ID: 3476542515
Enrollment ID: O20050420001452

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. Mr Matthew Isaac Lyons 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
Mr Matthew Isaac Lyons,
2700 Ygnacio Valley Rd Ste 100,
Walnut Creek, CA 94598-3462

Ph: (925) 939-3050
Mr Matthew Isaac Lyons,
2700 Ygnacio Valley Rd Ste 100,
Walnut Creek, CA 94598-3462

Ph: (925) 939-3050

Reviews and Comments


Internal Medicine Doctors in Walnut Creek, CA

Dr. Joseph Patrick Henry, M.D.
Pulmonary Disease
Medicare: May Accept Medicare Assignments
Practice Location: 2645 Snyder Ct, Walnut Creek, CA 94598
Phone: 510-409-6511    Fax: 719-941-8247
Mr. Ramin Khashayar, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1399 Ygnacio Valley Rd, Ste 14, Walnut Creek, CA 94598
Phone: 925-939-3050    Fax: 925-939-3057
Dr. Hennessey Tseng, M.D.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1450 Treat Blvd, Suite 220b, Walnut Creek, CA 94597
Phone: 925-937-1770    Fax: 925-937-0630
Dr. Ali-reza Barmaki, M.D.
Pulmonary Disease
Medicare: May Accept Medicare Assignments
Practice Location: 1220 Rossmoor Pkwy, Walnut Creek, CA 94595
Phone: 925-947-3393    Fax: 925-947-3396
Dr. Cynthia M. Mullen, M.D.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2637 Shadelands Dr, Walnut Creek, CA 94598
Phone: 925-322-2372    Fax: 925-322-6720
Mr. David Nathanson,
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 320 Lennon Ln, Walnut Creek, CA 94598
Phone: 925-906-2000    
Mark D Nathan, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 106 La Casa Via, #140, Walnut Creek, CA 94598
Phone: 925-274-2860    Fax: 925-932-4527

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.