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HASSAN M ALISSA MD
NPI 1770522633
Internal Medicine - Rheumatology in San Marcos, TX

Active since June 06, 2006PECOS EnrolledAccepts Medicare Assignment
66.67/100
CMS Quality Rating
1340 WONDER WORLD DR, BLDG.2, SUITE 2203, SAN MARCOS, TX 78666(512) 667-7123(512) 667-7328 Get Directions Write a Review

NPPES record last updated: February 14, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Hassan M Alissa Md NPPES

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

HASSAN M ALISSA MD (NPI 1770522633) is an individual rheumatology provider in San Marcos, Texas, licensed in Missouri (2000160315) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Guadalupe Regional Medical Center, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1770522633
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameHASSAN M ALISSACredential: MD
Location Address1340 WONDER WORLD DR, BLDG.2, SUITE 2203San Marcos, TX 78666-7598
Mailing Address1340 Wonder World Dr, Bldg.2, Suite 2203San Marcos, TX 78666-7598 · (512) 667-7123 · Fax (512) 667-7328
Phone(512) 667-7123
Fax(512) 667-7328
Sole ProprietorYes
Medical School CMSOtherGraduated 1992
Enumeration DateJune 6, 2006
Last NPPES UpdateFebruary 14, 2014
✔ NPI 1770522633 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Licenses✔ Licensed in MO · 2000160315✔ Licensed in TX · M7820
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1340 WONDER WORLD DR, San Marcos, TX 78666
Open in Google Maps ↗

Other Identifiers 3

Other152268Bcbs
OtherP00152821Railroad Medicare
Medicaid205333818MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Oscar Insurance Company.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

Hassan M Alissa 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 ID4880665488
PECOS Enrollment IDI20081006000420
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 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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
929 services117 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.
801 services387 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.
704 services395 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
226 services101 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
39 services39 patients
Injection, ketorolac tromethamine, per 15 mg J1885
Ketorolac tromethamine is a medication administered through injection, often used to manage moderate to severe pain. Each 15 mg dose helps to reduce hormones causing inflammation and pain in the body. It is not recommended for long-term use.
38 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Guadalupe Regional Medical Center

Acute Care Hospitals · Seguin, TX
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number450104
Location1215 E Court StSeguin, TX 78155 · Guadalupe County
Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Gonzales, TX
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450235
Location1110 North Sarah Dewitt DriveGonzales, TX 78629 · Gonzales County
Birthing friendly

Christus Santa Rosa Hospital-San Marcos

Acute Care Hospitals · San Marcos, TX
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450272
Location1301 Wonder World DriveSan Marcos, TX 78666 · Hays County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78666 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

66.67/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality82.91
Promoting Interoperability77
Improvement Activities40
Cost25.14

Reported Quality Measures

Documentation of Current Medications in the Medical Record
96%4,648 patients4/55-star benchmark: 100%
e-Prescribing
96%10,732 patients3/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
63%231 patients3/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
95%1,819 patients4/55-star benchmark: 98%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
94%1,864 patients4/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Patients combinedPopulations: 97% · 1,139 patients
Patients screened: 98% · 1,139 patients
83%76 patients4/55-star benchmark: 100%
Provide Patients Electronic Access to Their Health Information
71%2,004 patients3/55-star benchmark: 100%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 1% · 267 patients
Patients totalRate: 5% · 267 patients
5%267 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 11

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

CAROLINE CRUNK PTA
Physical Therapy Assistant
1340 WONDER WORLD DR
SAN MARCOS, TX 78666
Hays County (512) 753-3539
TEXAS HEARING CLINICS, LLC
Clinic/Center (Hearing and Speech)
1340 WONDER WORLD DR, SUITE 4301
SAN MARCOS, TX 78666
Hays County (855) 547-8369
JOSHUA A. CRUM, MD, PA
Orthopaedic Surgery
1340 WONDER WORLD DR, SUITE 104
SAN MARCOS, TX 78666
Hays County (512) 878-4203
JENNIFER MARSHALL DRISKELL MD
Family Medicine
1340 WONDER WORLD DR, BUILDING 4 SUITE 200
SAN MARCOS, TX 78666
Hays County (512) 392-1718
HILL COUNTRY RHEUMATOLOGY, PLLC
Internal Medicine (Rheumatology)
1340 WONDER WORLD DR, BUILDING 2, SUITE 2202
SAN MARCOS, TX 78666
Hays County (512) 667-7123
AMANDA MICHELLE IVY MD
Orthopaedic Surgery (Sports Medicine)
1340 WONDER WORLD DR, STE 4301
SAN MARCOS, TX 78666
Hays County (512) 353-6400
HECTOR HUGO VASQUEZ M.D.
General Practice
1340 WONDER WORLD DR, STE. 4201
SAN MARCOS, TX 78666
Hays County (512) 268-8900
HEART TO HEART HOSPICE
Health Maintenance Organization
1340 WONDER WORLD DR, SUITE 4202
SAN MARCOS, TX 78666
Hays County (512) 667-6816

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 Alissa's NPI number?

The NPI number for Hassan Alissa is 1770522633. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Hassan Alissa located?

Hassan Alissa practices at 1340 Wonder World Dr Bldg.2, Suite 2203, San Marcos, TX 78666. The listed phone number is (512) 667-7123.

What is Hassan Alissa's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Hassan Alissa enrolled in Medicare?

Yes. Hassan Alissa 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 Alissa accept?

Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan and Oscar Insurance Company list Hassan Alissa 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 Alissa affiliated with any hospitals?

According to CMS data, Hassan Alissa is affiliated with Guadalupe Regional Medical Center, Memorial Hospital and Christus Santa Rosa Hospital-San Marcos.

When was this NPI record last updated?

The NPPES record for Hassan Alissa was last updated on February 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.