DR. KHOSROW MAHDAVI MD
NPI 1275536773
Internal Medicine - Hematology & Oncology in Costa Mesa, CA

Active since May 27, 2005PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
1640 NEWPORT BLVD STE 400, COSTA MESA, CA 92627(949) 999-2400 Get Directions Write a Review

NPPES record last updated: November 15, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 15, 2023, Mar 14, 2023 (2 updates tracked since 2023).

About Dr. Khosrow Mahdavi Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KHOSROW MAHDAVI MD (NPI 1275536773) is an individual hematology & oncology provider in Costa Mesa, California, licensed in California (A33589) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1969).

NPPES Registry Identity

NPI1275536773
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. KHOSROW MAHDAVICredential: MD
Location Address1640 NEWPORT BLVD STE 400Costa Mesa, CA 92627-3786
Mailing Address200 S Manchester Ave Ste 300Orange, CA 92868-3219 · (714) 456-2986
Sole ProprietorNo
Medical School CMSOtherGraduated 1969
Enumeration DateMay 27, 2005
Last NPPES UpdateNovember 15, 20232 updates tracked since enumeration
NPPES CertifiedNovember 15, 2023
NPI 1275536773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in CA · A33589
Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedSpecialistTaxonomy 174400000X · License A33589 (CA)
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A33589 (CA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License A33589 (CA)
1640 NEWPORT BLVD STE 400, Costa Mesa, CA 92627

Other Identifiers 1

OtherA33589CA · License Number

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Khosrow Mahdavi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062435506
PECOS Enrollment IDI20060113000958
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
1,244 services499 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
140 services112 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
45 services45 patients
Biopsy and aspiration of bone marrow sample for diagnosis 38222
A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.
44 services37 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
42 services37 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
34 services34 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92627 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.4
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pharmacy (Home Infusion Therapy Pharmacy)
1640 NEWPORT BLVD STE 400
COSTA MESA, CA 92627
Internal Medicine (Hematology & Oncology)
1640 NEWPORT BLVD STE 400
COSTA MESA, CA 92627
Nurse Practitioner (Family)
1640 NEWPORT BLVD STE 400
COSTA MESA, CA 92627

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Khosrow Mahdavi's NPI number?

The NPI number for Khosrow Mahdavi is 1275536773. It was assigned to this individual provider in the NPPES registry on May 27, 2005.

Where is Khosrow Mahdavi located?

Khosrow Mahdavi practices at 1640 Newport Blvd Ste 400, Costa Mesa, CA 92627. The listed phone number is (949) 999-2400.

What is Khosrow Mahdavi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Khosrow Mahdavi enrolled in Medicare?

Yes. Khosrow Mahdavi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Khosrow Mahdavi was last updated on November 15, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.