Dr Ronald Masson, MD - Medicare Emergency Medicine in Stanford, CA

Dr Ronald Masson, MD is a medicare enrolled "Emergency Medicine" physician in Stanford, California. He went to University Of Vermont College Of Medicine and graduated in 2012 and has 12 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Permanente Medical Group Inc and his current practice location is 300 Pasteur Dr, Stanford, California. You can reach out to his office (for appointments etc.) via phone at (650) 723-9215.

Dr Ronald Masson is licensed to practice in California (license number A126419) 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 1568738904.

Contact Information

Dr Ronald Masson, MD
300 Pasteur Dr,
Stanford, CA 94305-2200
(650) 723-9215
Not Available

Map and Direction




Physician's Profile

Full NameDr Ronald Masson
GenderMale
SpecialityEmergency Medicine
Experience12 Years
Location300 Pasteur Dr, Stanford, California
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 Ronald Masson attended and graduated from University Of Vermont College Of Medicine in 2012
  NPI Data:
  • NPI Number: 1568738904
  • Provider Enumeration Date: 03/30/2012
  • Last Update Date: 12/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7517274699
  • Enrollment ID: I20150922002856

Medical Identifiers

Medical identifiers for Dr Ronald Masson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1568738904NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A126419 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Kaiser Foundation Hospital - FresnoFresno, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Permanente Medical Group Inc89219102258376

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 Ronald Masson allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710
Entity NameSan Joaquin Emergency Medical Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588960413
PECOS PAC ID: 6305022047
Enrollment ID: O20110516000103

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 Ronald Masson 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 Ronald Masson, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: () -
Dr Ronald Masson, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-9215

Reviews and Comments


Emergency Medicine Doctors in Stanford, CA

Enoch Akuffo Obeng, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Pierre-carole Tchamgoue Tchouapi, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Timothy John Batchelor, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Swaminatha V Mahadevan, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Kelly Nicole Roszczynialski, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Graham Walker, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Pasteur Dr, Mc: 5500, Stanford, CA 94305
Phone: 650-723-4000    
Shawn Keiji Kaku, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    

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.