Gretta Colby, MD
Internal Medicine
4+ years in practiceNPI: 1306587639Licensed in WI
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Credentials & Recognition
Specialties
Internal Medicine
NPI sub-specialties
Internal Medicine207R00000X
Practice Signals
Editorial signals beyond credentials. Patient transparency over opacity. See methodology.
Mid-Level (PA/NP) Use
Doctor-led visits
Years in Practice
4+ years
Estimated from NPI enumeration date
Frequently Asked Questions about Dr. Gretta Colby, MD
Where does Dr. Gretta Colby, MD practice?+
Dr. Gretta Colby, MD practices in Wisconsin, WI. 945 N 12TH ST
MILWAUKEE, WI 532331305.
What is Dr. Gretta Colby, MD's phone number?+
Dr. Gretta Colby, MD's practice phone is 414-219-7427. Office contact information is verified on the PBCMMG profile.
What does Dr. Gretta Colby, MD specialize in?+
Dr. Gretta Colby, MD's primary specialty is Internal Medicine.
Is Dr. Gretta Colby, MD board certified?+
Board certification status for Dr. Gretta Colby, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Gretta Colby, MD been practicing?+
Dr. Gretta Colby, MD has been in active practice for 4+ years, based on NPI enumeration and state licensing records.
What is Dr. Gretta Colby, MD's NPI number?+
Dr. Gretta Colby, MD's National Provider Identifier (NPI) is 1306587639, registered in the federal NPPES registry.
Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards
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