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

David Smith Oyer, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1134226467

David Smith Oyer, MD is an Endocrinology in Chicago, Illinois. Graduated from Harvard Medical School in 1969, 57 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
57
Trained at
Harvard Medical School
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

211 E Chicago Ave Ste 1700
Chicago, IL 60611-2672
Phone: (312) 944-6677
Fax: (312) 944-3346
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 036050957 (IL)

Record details

NPI number1134226467
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESMarch 27, 2026
Certification dateMarch 27, 2026
Mailing address211 E Chicago Ave Ste 1700, Chicago, IL 60611-2672

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1969 (57 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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