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ABDALLAH NIZAR ASSAF MD
NPI 1346821758
Internal Medicine in Plano, TX

Active since April 16, 2021PECOS EnrolledAccepts Medicare Assignment
1100 ALLIED DR, PLANO, TX 75093(469) 814-3278 Get Directions Write a Review

NPPES record last updated: July 16, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Abdallah Nizar Assaf Md NPPES

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

ABDALLAH NIZAR ASSAF MD (NPI 1346821758) is an individual internal medicine provider in Plano, Texas, licensed in Texas (V8930) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with Hunt Regional Medical Center, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1346821758
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameABDALLAH NIZAR ASSAFCredential: MD
Location Address1100 ALLIED DRPlano, TX 75093-5348
Mailing Address10561 Bloomfield DrPalos Park, IL 60464-2507 · (708) 745-4624
Phone(469) 814-3278
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 16, 2021
Last NPPES UpdateJuly 16, 2025
NPPES CertifiedJuly 16, 2025
✔ NPI 1346821758 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · V8930
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1100 ALLIED DR, Plano, TX 75093
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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, Oscar Insurance Company.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

Abdallah Nizar Assaf 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 ID8224431655
PECOS Enrollment IDI20250728003377
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

3

Medicare enrollment records show Abdallah Assaf reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Questcare Hospitalists PLLC
7.3 mi
Emergency Medicine
7777 FOREST LN
Dallas, TX 75230
  • Reassigned Medicare billing, Texas enrollment
  • 486 clinicians in this Medicare group
NPI 1265441620 (954) 939-5000
Poppy Drive Inpatient Services PLLC
21 mi
Emergency Medicine
231 S COLLINS RD
Sunnyvale, TX 75182
  • Reassigned Medicare billing, Texas enrollment
  • 36 clinicians in this Medicare group
NPI 1417379058 (954) 939-5000
Lonestar Hospital Medicine Associates, PA
36 mi
Hospitalist
2700 E BROAD ST
Mansfield, TX 76063
  • Reassigned Medicare billing, Texas enrollment
  • 994 clinicians in this Medicare group
NPI 1518237429 (682) 622-2000

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

Hospital Affiliations CMS Care Compare 5

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

Hunt Regional Medical Center

Acute Care Hospitals · Greenville, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450352
Location4215 Joe Ramsey Blvd EGreenville, TX 75401 · Hunt County
Emergency services Birthing friendly

Medical Center Of Mckinney

Acute Care Hospitals · Mckinney, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450403
Location4500 Medical Center DriveMckinney, TX 75069 · Collin County
Emergency services Birthing friendly

Medical City Denton

Acute Care Hospitals · Denton, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450634
Location3535 South I35 EastDenton, TX 76210 · Denton County
Emergency services

Medical City Plano

Acute Care Hospitals · Plano, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450651
Location3901 W 15th StPlano, TX 75075 · Collin County
Emergency services Birthing friendly

Baylor Scott And White Medical Center Sunnyvale

Acute Care Hospitals · Sunnyvale, TX
2/5 CMS rating
OwnershipProprietary
CMS Certification Number670060
Location231 South Collins RoadSunnyvale, TX 75182 · Dallas County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75093 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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 20

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

JACOB MEDINA PT, DPT
Physical Therapist
1100 ALLIED DR
PLANO, TX 75093
Collin County (469) 814-3278
MRS. ANDREA LYNN BATTEY AGACNP-BC
Nurse Practitioner (Acute Care)
1100 ALLIED DR
PLANO, TX 75093
Collin County (469) 814-3278
TEXAS HEART HOSPITAL OF THE SOUTHWEST LLP
Nurse Practitioner
1100 ALLIED DR
PLANO, TX 75093
Collin County (469) 814-3278
BRITNEY BROWN HOLLOWAY
Physician Assistant (Surgical)
1100 ALLIED DR
PLANO, TX 75093
Collin County (225) 776-4888
AKASH RUSIA
Internal Medicine (Advanced Heart Failure and Transplant Cardiology)
1100 ALLIED DR
PLANO, TX 75093
Collin County (219) 730-3601
EDITHA GUEVARA CNP
Nurse Practitioner (Gerontology)
1100 ALLIED DR
PLANO, TX 75093
Collin County (877) 814-4488
MISTY LAWRENCE AGACNP
Nurse Practitioner (Acute Care)
1100 ALLIED DR
PLANO, TX 75093
Collin County (469) 414-5002
CAMERON FIELDS
Student in an Organized Health Care Education/Training Program
1100 ALLIED DR
PLANO, TX 75093
Collin County (469) 892-1400

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 Abdallah Assaf's NPI number?

The NPI number for Abdallah Assaf is 1346821758. It was assigned to this individual provider in the NPPES registry on April 16, 2021.

Where is Abdallah Assaf located?

Abdallah Assaf practices at 1100 Allied Dr, Plano, TX 75093. The listed phone number is (469) 814-3278.

What is Abdallah Assaf's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Abdallah Assaf enrolled in Medicare?

Yes. Abdallah Assaf 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 Abdallah Assaf's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Abdallah Assaf reassigns Medicare benefits to 3 organizations: Questcare Hospitalists PLLC (Dallas, TX), Poppy Drive Inpatient Services PLLC (Sunnyvale, TX) and Lonestar Hospital Medicine Associates, PA (Mansfield, 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 Abdallah Assaf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Abdallah Assaf accept?

Health plans from Blue Cross and Blue Shield of Texas and Oscar Insurance Company list Abdallah Assaf 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 Abdallah Assaf affiliated with any hospitals?

According to CMS data, Abdallah Assaf is affiliated with Hunt Regional Medical Center, Medical Center Of Mckinney, Medical City Denton, Medical City Plano and Baylor Scott And White Medical Center Sunnyvale.

When was this NPI record last updated?

The NPPES record for Abdallah Assaf was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.