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KARISSA C HAMMER M.D.
NPI 1801277736
Obstetrics & Gynecology in Chicago, IL

Active since June 16, 2015
680 N LAKE SHORE DR, SUITE 100, CHICAGO, IL 60611(312) 288-6420(312) 288-6421 Get Directions Write a Review

NPPES record last updated: July 25, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Karissa C Hammer M.d. NPPES

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

KARISSA C HAMMER M.D. (NPI 1801277736) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Massachusetts (278746) and active in the NPI registry since June 2015.

NPPES Registry Identity

NPI1801277736
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameKARISSA C HAMMERCredential: M.D.
Location Address680 N LAKE SHORE DR, SUITE 100Chicago, IL 60611
Mailing Address680 N Lake Shore Dr, Suite 100Chicago, IL 60611 · (312) 288-6420 · Fax (312) 288-6421
Phone(312) 288-6420
Fax(312) 288-6421
Sole ProprietorYes
Enumeration DateJune 16, 2015
Last NPPES UpdateJuly 25, 2025
✔ NPI 1801277736 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in MA · 278746✔ Licensed in IL · 125067366
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
680 N LAKE SHORE DR, Chicago, IL 60611
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. BONNIE DEVROE MALIK CRNA
Nurse Anesthetist, Certified Registered
680 N LAKE SHORE DR, SUITE 1000
CHICAGO, IL 60611
Cook County (312) 695-9797
IMG MD, LLC
Medical Genetics, Ph.D. Medical Genetics
680 N LAKE SHORE DR
CHICAGO, IL 60611
Cook County (312) 981-4400
DR. JAY MICHAEL PENSLER M.D.
Specialist
680 N LAKE SHORE DR, SUITE 1125
CHICAGO, IL 60611
Cook County (312) 642-7777
JAY PRYSTOWSKY MD
Surgery
680 N LAKE SHORE DR, SUITE 1000
CHICAGO, IL 60611
Cook County (312) 695-9797
ANURADHA PERNI MD
Anesthesiology (Pain Medicine)
680 N LAKE SHORE DR, SUITE 1000
CHICAGO, IL 60611
Cook County (312) 695-9797
GYNECOLOGIC SPECIALISTS OF NORTHWESTERN, S.C.
Obstetrics & Gynecology (Gynecology)
680 N LAKE SHORE DR, SUITE117
CHICAGO, IL 60611
Cook County (312) 654-1166
DR. LEANNE TRAPP BENSKO M.D.
Pediatrics
680 N LAKE SHORE DR, 1050
CHICAGO, IL 60611
Cook County (312) 642-5515
DR. JULIA GOLDIN DNP
Nurse Practitioner (Family)
680 N LAKE SHORE DR
CHICAGO, IL 60611
Cook County (312) 965-6868

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 Karissa Hammer's NPI number?

The NPI number for Karissa Hammer is 1801277736. It was assigned to this individual provider in the NPPES registry on June 16, 2015.

Where is Karissa Hammer located?

Karissa Hammer practices at 680 N Lake Shore Dr Suite 100, Chicago, IL 60611. The listed phone number is (312) 288-6420.

What is Karissa Hammer's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Karissa Hammer was last updated on July 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.