Colleen Marie Walker, MD
Internal Medicine Physician · Louisville, KY
Colleen Marie Walker, MD is an internal medicine physician with a practice address in Louisville, Kentucky, and NPI 1750346078, issued on Apr 19, 2006. Check the license (Kentucky 38075, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Colleen Marie Walker
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 38075 KY
Self-reported in NPPES; status is on the state search - Practice location
- 3945 Nanz Ave, Louisville, KY 40207
- Phone
- (502) 899-1100
- Enumerated
- Apr 19, 2006
- Record last updated
- Jan 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (502) 614-6508
- Medicaid ID
- 64079247 KY
- Medicare enrollment
- Enrolled (PECOS I20050104000688); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,526 in Kentucky → Look up another NPI →
Also registered at 3945 Nanz Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Ballard, MDInternal Medicine Physician1699782391
Verify Colleen Marie Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 38075Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,134 Medicare Part D claims for 123 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 101 claims were for opioids.
Most prescribed
- Levothyroxine Sodium160 claims
- Atorvastatin Calcium98 claims
- Rosuvastatin Calcium78 claims
- Pantoprazole Sodium73 claims
- Mounjaro68 claims
- Montelukast Sodium67 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $665.24
38 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Colleen Marie Walker among 1,526 internal medicine physician records in Kentucky
Colleen Marie Walker, MD is one of 1,526 internal medicine physician records with a practice address in Kentucky. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1991 · median 2006 among the 1,025 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
457 internal medicine physician records list a practice address in Louisville
They are 457 of the 21,891 NPPES records with a practice address in Louisville, and 1,526 internal medicine physician records in Kentucky.
All 1,526 in Kentucky → Every provider in Louisville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zhalet Baharestan, D.O.Louisville, KY 402071962489559
- Arthur Blanford, M.D.Louisville, KY 402071427042621
- Henry Byrum, MDLouisville, KY 402071447215181
- Joseph Cecil, M.D.Louisville, KY 402071285616730
- Michael Dee, MDLouisville, KY 402071114911005
- Juliana Hayden, M.D.Louisville, KY 402071639134331
- Mary Lewis, M.D.Louisville, KY 402071467434365
- Svitlana Mandzy, M.D.Louisville, KY 402071750375861
Common questions
What is Colleen Marie Walker, MD's NPI number?
Colleen Marie Walker, MD's National Provider Identifier (NPI) is 1750346078, issued on Apr 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Colleen Marie Walker, MD located?
The NPPES record lists a practice address at 3945 Nanz Ave, Louisville, KY, 40207. Phone: (502) 899-1100. Providers update this record themselves, so call before visiting.
How can I verify Colleen Marie Walker, MD's license?
NPPES lists Kentucky license number 38075, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Colleen Marie Walker, MD prescribe under Medicare Part D?
In 2024, Colleen Marie Walker, MD had 3,134 Medicare Part D claims for 123 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.