Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Hassan M Alissa, MD

Individual provider Rheumatology Physician · NPI 1770522633

Hassan M Alissa, MD is a Rheumatology Physician in San Marcos, Texas. Practices as a sole proprietor. Licensed in Missouri and Texas.

Licensed in
MO, TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1340 Wonder World Dr BLDG.2 Ste 2203
San Marcos, TX 78666-7598
Phone: (512) 667-7123
Fax: (512) 667-7328
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 2000160315 (MO)
Rheumatology Physician Taxonomy 207RR0500X · Licence M7820 (TX)

Record details

NPI number1770522633
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 6, 2006
Last updated in NPPESFebruary 14, 2014

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