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

Merrill Zahtz, MD

Individual provider Internal Medicine Physician · NPI 1225097819

Merrill Zahtz, MD is an Internal Medicine in Chicago, Illinois. Qualified in 1975, 51 years ago. Practices with Midwest Refuah Health Center, a 12-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
51
Licensed in
IL
In the registry since
2006
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

6374 N Lincoln Ave
Chicago, IL 60659-1275
Phone: (872) 270-5999
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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 036-056-363 (IL)

Record details

NPI number1225097819
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 21, 2006
Last updated in NPPESAugust 5, 2025
Certification dateAugust 5, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1975 (51 years in practice)
Group practice Midwest Refuah Health Center — 12 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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