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

Individual provider Internal Medicine Physician · NPI 1225777568

Dr. Louis Mariano Santiago, MD is an Internal Medicine in Easton, Pennsylvania. Qualified in 2022, 4 years ago. Practices as a sole proprietor. Licensed in New Jersey and Pennsylvania.

Years since qualifying
4
Licensed in
NJ, PA
In the registry since
2022
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

400 S Greenwood Ave
Easton, PA 18045-3776
Phone: (484) 503-3073
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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 25MA12764900 (NJ)
Internal Medicine Physician Taxonomy 207R00000X · Licence MT226865 (PA)

Record details

NPI number1225777568
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 3, 2022
Last updated in NPPESMay 1, 2026
Certification dateMay 1, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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