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DR. JUSTIN DAVID MERSZEI MD
NPI 1649252529
Internal Medicine - Nephrology in Houston, TX

Active since November 16, 2005PECOS EnrolledAccepts Medicare Assignment
10023 SOUTH MAIN SUITE C-9, MAIN MEDICAL PLAZA, HOUSTON, TX 77025(713) 496-1077(713) 791-1710 Get Directions Write a Review

NPPES record last updated: January 19, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Justin David Merszei Md NPPES

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

DR. JUSTIN DAVID MERSZEI MD (NPI 1649252529) is an individual nephrology provider in Houston, Texas, licensed in Texas (L3016) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Hca Houston Healthcare Southeast, and is a graduate of University Of Southern California Keck School Of Medicine (1999).

NPPES Registry Identity

NPI1649252529
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. JUSTIN DAVID MERSZEICredential: MD
Location Address10023 SOUTH MAIN SUITE C-9, MAIN MEDICAL PLAZAHouston, TX 77025-5252
Mailing Address7447 Cambridge St, Suite 111Houston, TX 77054-2000 · (713) 496-1077 · Fax (713) 791-1710
Phone(713) 496-1077
Fax(713) 791-1710
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1999
Enumeration DateNovember 16, 2005
Last NPPES UpdateJanuary 19, 2011
✔ NPI 1649252529 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 TX · L3016
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.
10023 SOUTH MAIN SUITE C-9, Houston, TX 77025
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINIO5246TX
Medicare ID-Type Unspecified8B8361TX · Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

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. Justin David Merszei 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 ID8426032855
PECOS Enrollment IDI20040615000334
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.
711 services159 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.
367 services202 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.
298 services51 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
101 services55 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.
73 services32 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.
52 services51 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hca Houston Healthcare Southeast

Acute Care Hospitals · Pasadena, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450097
Location4000 Spencer HwyPasadena, TX 77504 · Harris County
Emergency services Birthing friendly

Memorial Hermann Hospital System

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450184
Location1635 North Loop WestHouston, TX 77008 · Harris County
Emergency services Birthing friendly

Hca Houston Healthcare Clear Lake

Acute Care Hospitals · Webster, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450617
Location500 W Medical Center BlvdWebster, TX 77598 · Harris County
Emergency services Birthing friendly

Houston Methodist Clear Lake Hospital

Acute Care Hospitals · Nassau Bay, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450709
Location18300 Houston Methodist DrNassau Bay, TX 77058 · Harris County
Emergency services Birthing friendly

St Luke's Patients Medical Center

Acute Care Hospitals · Pasadena, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number670031
Location4600 East Sam Houston Parkway SouthPasadena, TX 77505 · Harris County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77025 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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.

Other Providers at the Same Location NPPES

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

GREATER HOUSTON KIDNEY SPECIALISTS LLP
Specialist/Technologist, Other (Nephrology)
10023 SOUTH MAIN SUITE C-9, MAIN MEDICAL PLAZA
HOUSTON, TX 77025
Harris County (713) 496-1077

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 Justin Merszei's NPI number?

The NPI number for Justin Merszei is 1649252529. It was assigned to this individual provider in the NPPES registry on November 16, 2005.

Where is Justin Merszei located?

Justin Merszei practices at 10023 South Main Suite C-9 Main Medical Plaza, Houston, TX 77025. The listed phone number is (713) 496-1077.

What is Justin Merszei's specialty?

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

Is Justin Merszei enrolled in Medicare?

Yes. Justin Merszei 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.

What insurance does Justin Merszei accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list Justin Merszei as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Justin Merszei affiliated with any hospitals?

According to CMS data, Justin Merszei is affiliated with Hca Houston Healthcare Southeast, Memorial Hermann Hospital System, Hca Houston Healthcare Clear Lake, Houston Methodist Clear Lake Hospital and St Luke's Patients Medical Center.

When was this NPI record last updated?

The NPPES record for Justin Merszei was last updated on January 19, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.