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

Dr. Ava Mastny, MD

Individual provider Internal Medicine Physician · NPI 1164868691

Dr. Ava Mastny, MD is an Internal Medicine in Long Grove, Illinois. Qualified in 2012, 14 years ago. Practices with United Elite Hospitalists LLC, a 25-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
14
Licensed in
IL
In the registry since
2013
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

3880 Salem Lake Dr F
Long Grove, IL 60047-5292
Phone: (847) 719-2220
Fax: (847) 719-2265
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036139860 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036139860 (IL)

Record details

NPI number1164868691
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2013
Last updated in NPPESJune 17, 2025
Certification dateJune 17, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice United Elite Hospitalists Llc — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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