Dr Paymon Mesgarzadeh, MD - Medicare Internal Medicine in Fontana, CA

Dr Paymon Mesgarzadeh, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Fontana, California. He went to Wayne State University School Of Medicine and graduated in 2004 and has 20 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Southern California Permanente Medical Group and his current practice location is 9985 Sierra Ave, Fontana, California. You can reach out to his office (for appointments etc.) via phone at (909) 427-5000.

Dr Paymon Mesgarzadeh is licensed to practice in California (license number A109433) 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 1023216892.

Contact Information

Dr Paymon Mesgarzadeh, MD
9985 Sierra Ave,
Fontana, CA 92335-6720
(909) 427-5000
Not Available

Map and Direction




Physician's Profile

Full NameDr Paymon Mesgarzadeh
GenderMale
SpecialityInternal Medicine
Experience20 Years
Location9985 Sierra Ave, Fontana, 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 Paymon Mesgarzadeh attended and graduated from Wayne State University School Of Medicine in 2004
  NPI Data:
  • NPI Number: 1023216892
  • Provider Enumeration Date: 07/03/2007
  • Last Update Date: 11/29/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 9032203666
  • Enrollment ID: I20110927000219

Medical Identifiers

Medical identifiers for Dr Paymon Mesgarzadeh such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023216892NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease A109433 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Southern California Permanente Medical Group60027291758373

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 Paymon Mesgarzadeh allows following entities to bill medicare on his behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316979834
PECOS PAC ID: 6002729175
Enrollment ID: O20040126000823

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 Paymon Mesgarzadeh 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 Paymon Mesgarzadeh, MD
9985 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-5000
Dr Paymon Mesgarzadeh, MD
9985 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-5000

Reviews and Comments


Internal Medicine Doctors in Fontana, CA

Nainesh K. Gandhi, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9985 Sierra Ave, Fontana, CA 92335
Phone: 866-454-3485    
Blanca E. Viramontes, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Kathryn Chang Lin, MD
Cardiovascular Disease
Medicare: Not Enrolled in Medicare
Practice Location: 16465 Sierra Lakes Pkwy, Ste 245, Fontana, CA 92336
Phone: 909-829-7337    Fax: 909-829-1218
Lih-jiau Chen, MD
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Tommy Tiong Hien Oei, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Edmond C. Hui, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    

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.