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DR. RONALD ARTHUR SEMERDJIAN M.D.
NPI 1154530798
Internal Medicine - Pulmonary Disease in Wilmette, IL

Active since May 21, 2007
2507 KENILWORTH AVE, WILMETTE, IL 60091(847) 251-8669(847) 251-4455 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Ronald Arthur Semerdjian M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. RONALD ARTHUR SEMERDJIAN M.D. (NPI 1154530798) is an individual pulmonary disease provider in Wilmette, Illinois and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1154530798
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameDR. RONALD ARTHUR SEMERDJIANCredential: M.D.
Location Address2507 KENILWORTH AVEWilmette, IL 60091-1336
Mailing Address2507 Kenilworth AveWilmette, IL 60091-1336 · (847) 251-8669 · Fax (847) 251-4455
Phone(847) 251-8669
Fax(847) 251-4455
Sole ProprietorYes
Enumeration DateMay 21, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1154530798 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal MedicineTaxonomy 207R00000X
2507 KENILWORTH AVE, Wilmette, IL 60091
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ronald Semerdjian's NPI number?

The NPI number for Ronald Semerdjian is 1154530798. It was assigned to this individual provider in the NPPES registry on May 21, 2007.

Where is Ronald Semerdjian located?

Ronald Semerdjian practices at 2507 Kenilworth Ave, Wilmette, IL 60091. The listed phone number is (847) 251-8669.

What is Ronald Semerdjian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

When was this NPI record last updated?

The NPPES record for Ronald Semerdjian was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.