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

Sergio Arellano-Ayala, NP

Individual provider Acute Care Nurse Practitioner · NPI 1891328779

Sergio Arellano-Ayala, NP is a Nurse Practitioner in Baltimore, Maryland. Qualified in 2019, 7 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
7
Licensed in
TX
In the registry since
2020
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

22 S Greene St # S4D03
Baltimore, MD 21201-1544
Phone: (410) 328-5831
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP144156 (TX)

Record details

NPI number1891328779
Entity typeIndividual (Type 1)
GenderMale
Credentials NP
Sole proprietorYes
NPI enumeratedFebruary 19, 2020
Last updated in NPPESFebruary 19, 2020
Certification dateFebruary 19, 2020

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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