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

Colleen Walker MD PLLC

Organization Internal Medicine Physician · NPI 1720549264

Colleen Walker MD PLLC is an Internal Medicine Physician in Louisville, Kentucky. Registered with an NPI since 2019.

In the registry since
2019
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3945 Nanz Ave
Louisville, KY 40207
Phone: (502) 899-1100
Fax: (502) 614-6508
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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

Record details

NPI number1720549264
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Colleen Walker — Md Owner · (502) 899-1100
Other names Ultimate Md
NPI enumeratedMarch 27, 2019
Last updated in NPPESMarch 27, 2019
Mailing address3945 Nanz Ave, Louisville, KY 40207

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