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

Dr. Zachary Berg, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1255741278

Dr. Zachary Berg, MD is a Pulmonary Disease in O Fallon, Illinois. Graduated from University of Missouri, Columbia School of Medicine in 2014, 12 years ago. Practices with Hshs Medical Group Inc, a 209-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
12
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
IL
In the registry since
2014
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

3 Saint Elizabeth Blvd Ste 5000
O Fallon, IL 62269-1282
Phone: (618) 641-5803
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 036150902 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1255741278
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 29, 2014
Last updated in NPPESJuly 1, 2020
Certification dateJuly 1, 2020

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Hshs Medical Group Inc — 209 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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