DR. DARINE KASSAR M.D.
NPI 1902035686
Psychiatry & Neurology - Neuromuscular Medicine in Sugar Land, TX

Q: What is Darine Kassar's NPI number?

The NPI number for Darine Kassar is 1902035686. It was assigned to this individual provider in the NPPES registry on July 2, 2009.

Q: What is Darine Kassar's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neuromuscular Medicine, with taxonomy code 2084N0008X.

Q: When was this NPI record last updated?

The NPPES record for Darine Kassar was last updated on May 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.

Active since July 02, 2009PECOS EnrolledAccepts Medicare Assignment

16605 SOUTHWEST FWY STE 600, SUGAR LAND, TX 77479(713) 254-2421 Get Directions Write a Review

NPPES record last updated: May 1, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 1, 2023, Jan 11, 2019 (2 updates tracked since 2019).

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About Dr. Darine Kassar M.d. NPPES

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

DR. DARINE KASSAR M.D. (NPI 1902035686) is an individual neuromuscular medicine provider in Sugar Land, Texas, licensed in Texas (P8922) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1902035686

Entity TypeIndividualFemale

Primary Taxonomy2084N0008X

Provider Legal NameDR. DARINE KASSARCredential: M.D.

Location Address16605 SOUTHWEST FWY STE 600Sugar Land, TX 77479-3545

Mailing Address16605 Southwest Fwy Ste 600Sugar Land, TX 77479-3545 · (281) 274-7595

Phone(713) 254-2421

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateJuly 2, 2009

Last NPPES UpdateMay 1, 20232 updates tracked since enumeration

NPPES CertifiedApril 24, 2023

✔ NPI 1902035686 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Neuromuscular MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2084N0008X

License✔ Licensed in TX · P8922

Definition

A neurologist or child neurologist who specializes in the diagnosis and management of disorders of nerve, muscle or neuromuscular junction, including amyotrophic lateral sclerosis, peripheral neuropathies (e.g., diabetic and immune mediated neuropathies), various muscular dystrophies, congenital and acquired myopathies, inflammatory myopathies (e.g., polymyositis, inclusion body myositis) and neuromuscular transmission disorders (e.g., myasthenia gravis, Lambert-Eaton myasthenic syndrome).

Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License P8922 (TX)

16605 SOUTHWEST FWY STE 600, Sugar Land, TX 77479

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Darine Kassar 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 ID8325282403

PECOS Enrollment IDI20141204000638

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.

Medicare Billing Reassignments

Medicare enrollment records show Darine Kassar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Houston Methodist Specialty Physicians

15 mi

Otolaryngology

7550 GREENBRIAR DR STE 600
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
1,579 clinicians in this Medicare group

NPI 1902614332 (281) 414-6055

Tmh Physician Associates PLLC

16 mi

Ophthalmology

6550 FANNIN ST, SUITE 447
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
2,407 clinicians in this Medicare group

NPI 1275779225 (713) 441-7389

University Of Texas Health Science Center At San Antonio

177 mi

Clinical Pathology/Laboratory Medicine

7703 FLOYD CURL DR RM 327B
San Antonio, TX 78229

Reassigned Medicare billing, Texas enrollment
2,397 clinicians in this Medicare group

NPI 1396717989 (210) 450-9000

Texas Tech University Health Sciences Center

651 mi

Family Medicine

313 S RIO VISTA RD
El Paso, TX 79927

Reassigned Medicare billing, Texas enrollment
Medicare enrollment name: Texas Tech University Health Sciences Center El Paso
856 clinicians in this Medicare group

NPI 1588622500 (915) 859-0817

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

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 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.

276 services199 patients

Needle measurement of electrical activity in arm or leg muscles, complete study 95886

This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.

87 services52 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.

73 services65 patients

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.

32 services22 patients

Nerve conduction, 13 or more studies 95913

Nerve conduction studies involve 13 or more tests to check the speed and strength of signals traveling between your nerves and muscles. It helps diagnose conditions affecting nerves and muscles. The test involves small shocks and may cause minor discomfort.

20 services20 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

17 services17 patients

Hospital Affiliations CMS Care Compare 4

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

Houston Methodist Hospital

Acute Care Hospitals · Houston, TX

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450358

Location6565 FanninHouston, TX 77030 · Harris County

Emergency services Birthing friendly

Matagorda Regional Medical Center

Acute Care Hospitals · Bay City, TX

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number450465

Location104 7th StreetBay City, TX 77414 · Matagorda County

Emergency services Birthing friendly

Houston Methodist Sugarland Hospital

Acute Care Hospitals · Sugar Land, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450820

Location16655 Southwest FreewaySugar Land, TX 77479 · Fort Bend County

Emergency services Birthing friendly

Houston Methodist West Hospital

Acute Care Hospitals · Houston, TX

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number670077

Location18500 Katy FreewayHouston, TX 77094 · Harris County

Emergency services Birthing friendly

Referred Medical Equipment & Supplies CMS DME claims

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

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier25 claims25 services$877.55 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 3

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

DR. WAMDA OSMAN AHMED MD

Psychiatry & Neurology (Neurology)

16605 SOUTHWEST FWY STE 600
SUGAR LAND, TX 77479

Fort Bend County (281) 274-7595

MUHAMMAD TAIMUR AHMAD MALIK M.D

Psychiatry & Neurology (Neurology)

16605 SOUTHWEST FWY STE 600
SUGAR LAND, TX 77479

Fort Bend County (281) 274-7595

JENNY SUH WONG

Physician Assistant

16605 SOUTHWEST FWY STE 600
SUGAR LAND, TX 77479

Fort Bend County (281) 276-8434

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 Darine Kassar's NPI number?

The NPI number for Darine Kassar is 1902035686. It was assigned to this individual provider in the NPPES registry on July 2, 2009.

Where is Darine Kassar located?

Darine Kassar practices at 16605 Southwest Fwy Ste 600, Sugar Land, TX 77479. The listed phone number is (713) 254-2421.

What is Darine Kassar's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neuromuscular Medicine, with taxonomy code 2084N0008X.

Is Darine Kassar enrolled in Medicare?

Yes. Darine Kassar 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.

Which organizations bill Medicare for Darine Kassar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darine Kassar reassigns Medicare benefits to 4 organizations: Houston Methodist Specialty Physicians (Houston, TX), Tmh Physician Associates PLLC (Houston, TX), University Of Texas Health Science Center At San Antonio (San Antonio, TX) and Texas Tech University Health Sciences Center (El Paso, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Darine Kassar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Darine Kassar accept?

Health plans from Blue Cross and Blue Shield of Texas and Imperial Insurance Companies, Inc. list Darine Kassar 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 Darine Kassar affiliated with any hospitals?

According to CMS data, Darine Kassar is affiliated with Houston Methodist Hospital, Matagorda Regional Medical Center, Houston Methodist Sugarland Hospital and Houston Methodist West Hospital.

When was this NPI record last updated?

The NPPES record for Darine Kassar was last updated on May 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.