Colleen Walker MD PLLC
NPI 1720549264 · Internal Medicine Physician · Louisville, KY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colleen Walker MD PLLC is a Internal Medicine Physician organization in Louisville, KY (NPI 1720549264).
Provider details
- NPI number
- 1720549264
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Colleen Walker, MD Owner(502) 899-1100
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Other name
- Ultimate MD
Registry dates
- Enumerated
- 2019-03-27
- Last updated
- 2019-03-27
Frequently asked questions
- What is Colleen Walker MD PLLC's NPI number?
- Colleen Walker MD PLLC's National Provider Identifier (NPI) is 1720549264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Colleen Walker MD PLLC?
- Colleen Walker MD PLLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Colleen Walker MD PLLC located?
- Colleen Walker MD PLLC's practice location on file with NPPES is 3945 Nanz Ave, Louisville, KY 40207.
- What is Colleen Walker MD PLLC's phone number?
- The practice phone number listed in the NPPES registry for Colleen Walker MD PLLC is (502) 899-1100.
- Does Colleen Walker MD PLLC accept Medicare?
- Colleen Walker MD PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Colleen Walker MD PLLC?
- The authorized official listed on Colleen Walker MD PLLC's NPPES record is Colleen Walker, MD Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Colleen Walker MD PLLC's NPI active?
- Yes — Colleen Walker MD PLLC's NPI (1720549264) is active in the NPPES registry as of the last update on 2019-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.