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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. HASSAN HUSSEIN AMMAR DO
NPI 1154071884
Internal Medicine in San Antonio, TX

Active since March 25, 2022PECOS Enrolled
7700 FLOYD CURL DR, SAN ANTONIO, TX 78229(210) 575-4000 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 31, 2026, Jun 23, 2025 (2 updates tracked since 2025).

About Dr. Hassan Hussein Ammar Do NPPES

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

DR. HASSAN HUSSEIN AMMAR DO (NPI 1154071884) is an individual internal medicine provider in San Antonio, Texas, licensed in Texas (V6855) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, is affiliated with Methodist Hospital, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1154071884
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. HASSAN HUSSEIN AMMARCredential: DO
Location Address7700 FLOYD CURL DRSan Antonio, TX 78229-3902
Mailing Address6523 Moss Oak DrSan Antonio, TX 78229-4221 · (210) 576-5000
Phone(210) 575-4000
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateMarch 25, 2022
Last NPPES UpdateJuly 31, 20262 updates tracked since enumeration
NPPES CertifiedJuly 31, 2026
✔ NPI 1154071884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · V6855
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.
7700 FLOYD CURL DR, San Antonio, TX 78229
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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.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. Hassan Hussein Ammar Do 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 ID1850892043
PECOS Enrollment IDI20250828005235
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.

Hospital Affiliations CMS Care Compare 2

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

Methodist Hospital

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450388
Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number670055
Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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.

TIMOTHY I OSONMA MD
Internal Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4000
THOMAS REX BOSEN MD
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 233-6363
R L CARRY INC
Internal Medicine (Geriatric Medicine)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 558-6288
DR. SUMERU GHANSHYAM MEHTA M.D.
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4420
DR. MUHAMMAD ALI SYED MD
Pediatrics (Pediatric Critical Care Medicine)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (347) 993-0992
CHRISTINE KIM
Pathology (Anatomic Pathology & Clinical Pathology)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4000
CHRISTINA MARIE GUTIERREZ M.D.
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 233-6363
TAHNIA MARZAN ALAUDDIN PHARMD
Pharmacist
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-7220

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 Hassan Ammar's NPI number?

The NPI number for Hassan Ammar is 1154071884. It was assigned to this individual provider in the NPPES registry on March 25, 2022.

Where is Hassan Ammar located?

Hassan Ammar practices at 7700 Floyd Curl Dr, San Antonio, TX 78229. The listed phone number is (210) 575-4000.

What is Hassan Ammar's specialty?

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

Is Hassan Ammar enrolled in Medicare?

Yes. Hassan Ammar 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 Hassan Ammar accept?

Health plans from Blue Cross and Blue Shield of Texas list Hassan Ammar 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 Hassan Ammar affiliated with any hospitals?

According to CMS data, Hassan Ammar is affiliated with Methodist Hospital and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for Hassan Ammar was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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.