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

MS. Ruth G Diaz, MD

Individual provider Internal Medicine Physician · NPI 1235119066

MS. Ruth G Diaz, MD is an Internal Medicine in Hauppauge, New York. Qualified in 1966, 60 years ago. Practices with Comprehensive Medical Associates PLLC, a 2-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
60
Licensed in
NY
In the registry since
2006
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

515 Route 111 Fl 2
Hauppauge, NY 11788-4339
Phone: (631) 224-1819
Fax: (631) 224-1812
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 116667 (NY)

Record details

NPI number1235119066
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 18, 2006
Last updated in NPPESFebruary 25, 2020
Certification dateFebruary 25, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1966 (60 years in practice)
Group practice Comprehensive Medical Associates Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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