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DR. ILIAN ORLANDO MARQUEZ M.D.
NPI 1710019906
Internal Medicine - Nephrology in Pasadena, CA

Active since March 12, 2007PECOS EnrolledAccepts Medicare Assignment
34.87/100
CMS Quality Rating
301 S FAIR OAKS AVE STE 405, PASADENA, CA 91105(626) 794-7075(626) 404-7545 Get Directions Write a Review

NPPES record last updated: March 6, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Ilian Orlando Marquez M.d. NPPES

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

DR. ILIAN ORLANDO MARQUEZ M.D. (NPI 1710019906) is an individual nephrology provider in Pasadena, California, licensed in California (A80500) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical School At San Antonio (2001).

NPPES Registry Identity

NPI1710019906
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. ILIAN ORLANDO MARQUEZCredential: M.D.
Location Address301 S FAIR OAKS AVE STE 405Pasadena, CA 91105-2562
Mailing Address301 S Fair Oaks Ave Ste 405Pasadena, CA 91105-2562 · (626) 794-7075 · Fax (626) 404-7545
Phone(626) 794-7075
Fax(626) 404-7545
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2001
Enumeration DateMarch 12, 2007
Last NPPES UpdateMarch 6, 2026
NPPES CertifiedMarch 6, 2026
✔ NPI 1710019906 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A80500
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
301 S FAIR OAKS AVE STE 405, Pasadena, CA 91105
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A805000CA

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. Ilian Orlando Marquez M.d. 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 ID4284735010
PECOS Enrollment IDI20070724000564
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 10

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
679 services159 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
208 services51 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.
204 services111 patients
Dialysis services, 2-3 physician visits per month (20 years or older) 90961
Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.
77 services34 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
68 services50 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
56 services55 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91105 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

34.87/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality15
Improvement Activities0
Cost62.92

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
6 suppliers41 claims4,065 services$0.30 avg. paid by Medicare
Prednisone, immediate release or delayed release, oral, 1 mg J7512
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers15 claims2,250 services$0.01 avg. paid by Medicare
Mycophenolic acid, oral, 180 mg J7518
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers26 claims4,680 services$0.92 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
6 suppliers44 claims44 services$18.50 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
6 suppliers54 claims55 services$12.60 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

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

DOLORES M FIGUEROA M.D.
Internal Medicine
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 440-7325
ARROYO NEPHROLOGY ASSOCIATES
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 794-7075
DR. ASHOK SUNDER RAJ M.D.
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 794-7075
JUSTIN ALEXANDER CHEN MD
Internal Medicine (Nephrology)
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 352-0010
JENNIFER MOANI KAHAU-SEGOVIA FNP
Nurse Practitioner
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 440-7325
ELANA L SHELDON MD
Internal Medicine
301 S FAIR OAKS AVE STE 405, PASADENA
PASADENA, CA 91105
Los Angeles County (626) 792-1912
NALINI DEVI MATTAI MD
General Practice
301 S FAIR OAKS AVE STE 405
PASADENA, CA 91105
Los Angeles County (626) 792-1912

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 Ilian Marquez's NPI number?

The NPI number for Ilian Marquez is 1710019906. It was assigned to this individual provider in the NPPES registry on March 12, 2007.

Where is Ilian Marquez located?

Ilian Marquez practices at 301 S Fair Oaks Ave Ste 405, Pasadena, CA 91105. The listed phone number is (626) 794-7075.

What is Ilian Marquez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Ilian Marquez enrolled in Medicare?

Yes. Ilian Marquez 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 Ilian Marquez was last updated on March 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.