Dr Firas Naji, DO - Medicare Internal Medicine in Irvine, CA

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Dr Firas Naji, DO is a medicare enrolled "Internal Medicine" physician in Irvine, California. He went to University Of New England, College Of Osteo Medicine and graduated in 2010 and has 15 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice County Of Santa Clara and his current practice location is 17595 Harvard Ave Ste C-803, Irvine, California. You can reach out to his office (for appointments etc.) via phone at (949) 981-5033.

Dr Firas Naji is licensed to practice in Massachusetts (license number 253997) 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 1578883997.

Contact Information

Dr Firas Naji, DO
17595 Harvard Ave Ste C-803,
Irvine, CA 92614-8516
(949) 981-5033
(949) 272-9976

Map and Direction




Physician's Profile

Full NameDr Firas Naji
GenderMale
SpecialityInternal Medicine
Experience15 Years
Location17595 Harvard Ave Ste C-803, Irvine, 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 Firas Naji attended and graduated from University Of New England, College Of Osteo Medicine in 2010
  NPI Data:
  • NPI Number: 1578883997
  • Provider Enumeration Date: 06/08/2010
  • Last Update Date: 11/27/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9436393618
  • Enrollment ID: I20211130001221

Medical Identifiers

Medical identifiers for Dr Firas Naji such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578883997NPI-NPPES
110099862AMedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 253997 (Massachusetts)Primary
390200000XStudent In An Organized Health Care Education/training Program 244291 (Massachusetts)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Santa Clara Valley Medical CenterSan jose, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
County Of Santa Clara1254244973722

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 Firas Naji allows following entities to bill medicare on his behalf.
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659450955
PECOS PAC ID: 1254244973
Enrollment ID: O20040113000757
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699885079
PECOS PAC ID: 1254244973
Enrollment ID: O20040113000784
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Other Medical Care Group
Entity IdentifiersNPI Number: 1629301346
PECOS PAC ID: 1254244973
Enrollment ID: O20110318000170
Entity NameAdvantage Hospitalists, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801269881
PECOS PAC ID: 7810291531
Enrollment ID: O20160201000977

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 Firas Naji 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 Firas Naji, DO
17595 Harvard Ave Ste C803,
Irvine, CA 92614-8516

Ph: (949) 981-5033		Dr Firas Naji, DO
17595 Harvard Ave Ste C-803,
Irvine, CA 92614-8516

Ph: (949) 981-5033

Reviews and Comments


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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).

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