MAZEN HASSAN MD
NPI 1003311093
Internal Medicine in Dallas, TX

Active since March 29, 2018PECOS EnrolledAccepts Medicare Assignment
3600 GASTON AVE STE 550, DALLAS, TX 75246(214) 821-1177 Get Directions Write a Review

NPPES record last updated: March 3, 2023. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Mar 3, 2023, Aug 12, 2022, Oct 10, 2021 and 3 more (6 updates tracked since 2018).

About Mazen Hassan Md NPPES

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

MAZEN HASSAN MD (NPI 1003311093) is an individual internal medicine provider in Dallas, Texas, licensed in Texas (S7228) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and is a graduate of University Of Texas Medical School At San Antonio (2018).

NPPES Registry Identity

NPI1003311093
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMAZEN HASSANCredential: MD
Location Address3600 GASTON AVE STE 550Dallas, TX 75246-1905
Mailing Address3600 Gaston Ave Ste 550Dallas, TX 75246-1905
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2018
Enumeration DateMarch 29, 2018
Last NPPES UpdateMarch 3, 20236 updates tracked since enumeration
NPPES CertifiedMarch 3, 2023
NPI 1003311093 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in TX · S7228
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 ListedGeneral PracticeTaxonomy 208D00000X · License S7228 (TX)
Also ListedHospitalistTaxonomy 208M00000X · License S7228 (TX)
3600 GASTON AVE STE 550, Dallas, TX 75246

Accepted 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

Mazen Hassan 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 ID1153686134
PECOS Enrollment IDI20211009000059
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 4

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 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.
201 services108 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.
168 services102 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
28 services28 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.
27 services27 patients

Hospital Affiliations CMS Care Compare

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

Baylor University Medical Center

Acute Care Hospitals · Dallas, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450021
Location3500 Gaston AveDallas, TX 75246 · Dallas County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75246 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
$131.01 typical visit price
range $57.18 – $172.86
Typical copayment $32.75 (range $14.29 – $43.21)
Most-billed visit code 99204
Established Patient
$100.80 typical visit price
range $18.48 – $141.20
Typical copayment $25.20 (range $4.62 – $35.30)
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.

Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246
Internal Medicine
3600 GASTON AVE STE 550
DALLAS, TX 75246

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003311093, enumerated as an "individual" on March 29, 2018.

The provider is located at 3600 GASTON AVE STE 550 DALLAS, TX 75246 and the phone number is (214) 821-1177.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Blue Cross and Blue Shield of Texas. Please consult your insurance carrier or call the provider to verify.

Mazen Hassan is affiliated with: BAYLOR UNIVERSITY MEDICAL CENTER.