Dr Khosrow Mahdavi, MD - Medicare Internal Medicine in Costa Mesa, CA

Dr Khosrow Mahdavi, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Costa Mesa, California. He graduated from medical school in 1969 and has 55 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Uc Regents and his current practice location is 1640 Newport Blvd Ste 400, Costa Mesa, California. You can reach out to his office (for appointments etc.) via phone at (949) 999-2400.

Dr Khosrow Mahdavi is licensed to practice in California (license number A33589) 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 1275536773.

Contact Information

Dr Khosrow Mahdavi, MD
1640 Newport Blvd Ste 400,
Costa Mesa, CA 92627-3786
(949) 999-2400
Not Available

Map and Direction




Physician's Profile

Full NameDr Khosrow Mahdavi
GenderMale
SpecialityInternal Medicine
Experience55 Years
Location1640 Newport Blvd Ste 400, Costa Mesa, 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 Khosrow Mahdavi graduated from medical school in 1969
  NPI Data:
  • NPI Number: 1275536773
  • Provider Enumeration Date: 05/27/2005
  • Last Update Date: 11/15/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2062435506
  • Enrollment ID: I20060113000958

Medical Identifiers

Medical identifiers for Dr Khosrow Mahdavi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1275536773NPI-NPPES
A33589OtherCALICENSE NUMBER

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0000XInternal Medicine - Hematology A33589 (California)Secondary
174400000XSpecialist A33589 (California)Secondary
207RX0202XInternal Medicine - Medical Oncology A33589 (California)Secondary
207RH0003XInternal Medicine - Hematology & Oncology A33589 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of California Irvine Medical CenterOrange, CAHospital
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital
Memorialcare Saddleback Medical CenterLaguna hills, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Uc Regents7416869516197

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 Khosrow Mahdavi allows following entities to bill medicare on his behalf.
Entity NameUniversity Of California Irvine
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598790529
PECOS PAC ID: 5395658181
Enrollment ID: O20031107000431
Entity NameUc Regents
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760430847
PECOS PAC ID: 7416869516
Enrollment ID: O20031118000906
Entity NameNewport Doctors Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265458210
PECOS PAC ID: 5496778920
Enrollment ID: O20060110000912

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 Khosrow Mahdavi 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 Khosrow Mahdavi, MD
200 S Manchester Ave Ste 300,
Orange, CA 92868-3219

Ph: (714) 456-2986
Dr Khosrow Mahdavi, MD
1640 Newport Blvd Ste 400,
Costa Mesa, CA 92627-3786

Ph: (949) 999-2400

Reviews and Comments


Internal Medicine Doctors in Costa Mesa, CA

Kenneth C Wen, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3080 Bristol St, Suite 600, Costa Mesa, CA 92626
Phone: 714-445-0220    Fax: 714-445-0246
Dilip R Patel, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 2501 Harbor Blvd, Costa Mesa, CA 92626
Phone: 714-957-5000    
Reza Rasouli, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1665 Scenic Ave, Ste # 100, Costa Mesa, CA 92626
Phone: 714-436-4444    
Aparna S Akolkav, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1665 Scenic Ave, Ste 100, Costa Mesa, CA 92626
Phone: 714-436-4444    Fax: 714-436-4812
Dr. Joseph A. Desanto, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 230 E 17th St, Suite 200, Costa Mesa, CA 92627
Phone: 949-734-0114    Fax: 949-220-0061
Dr. Margarita Pereyda, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 1550 Superior Ave, Costa Mesa, CA 92627
Phone: 949-650-0186    Fax: 949-650-6976
Dr. Adnan Akhtar, D.O.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 301 Victoria St, Costa Mesa, CA 92627
Phone: 949-642-2734    

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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