Dr. Colleen Marie Walker, MD
- Medicare services, 2022
- 24
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 3,134
- Hospital affiliations
- 4
- Industry payments
- $12,816
- Practice address
- 3945 Nanz Ave, Louisville, KY 40207
- Practice phone
- Call (502) 899-1100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Colleen Walker MD
Louisville, Kentucky
Find Dr. Walker's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Colleen Marie Walker is an internist in Louisville, Kentucky
Dr. Walker practices at Colleen Walker MD in Louisville, Kentucky.
Dr. Walker's NPI, 1750346078, was assigned on April 19, 2006. Dr. Walker graduated from University of Louisville School of Medicine in 1991. Dr. Walker holds Kentucky license 38075.
- NPI
- 1750346078NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224086590
- NPI enumeration date
- April 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (502) 899-1100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Colleen Marie Walker practices at Colleen Walker MD in Louisville, Kentucky
Dr. Walker's primary practice is Colleen Walker MD, at 3945 Nanz Ave, Louisville, KY 40207 in Jefferson County. The practice phone is (502) 899-1100.
- Colleen Walker MD3945 Nanz Ave, Louisville, KY 40207 · Jefferson CountyPhone(502) 899-1100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Colleen Marie Walker is affiliated with 6 sites of care and 1 medical group
Dr. Walker's primary practice is Colleen Walker MD in Louisville, Kentucky. Dr. Walker is also affiliated with Norton Hospital. The medical group on file is Ultimate MD. Dmand AI also links Dr. Walker to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Colleen Marie Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Colleen Walker MD | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Colleen Marie Walker is one of 1,380 internists in Kentucky
Internal medicine is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Walker is licensed in Kentucky.
Specialties and state licenses
- Internal medicine, KentuckyPrimary
Internists near Dr. Walker
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Colleen Marie Walker billed Medicare for 24 services in 2022
CMS data shows 24 Medicare services from Dr. Walker across 1 procedure code in 2022, all of them office visits, for 11 Medicare patients. Medicare paid $1,299 for them. Every service was in an office.
Dr. Walker's Medicare services by type, 2019 to 2022
- 2019
- 2022
- Office and hospital visits
- 2019: 892022: 2473%
- Drugs given in the office
- 2019: 812022: 0100%
Dr. Walker compared with the Kentucky median for internists, 2022
- Dr. Walker
- Kentucky median
- Medicare services
- 24vs 61396% below
- Medicare patients
- 11vs 22395% below
- Part D claims
- 2,531vs 3686.9 times
Medians across 1,380 internists in Kentucky with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Colleen Marie Walker treated 11 Medicare patients in 2024, average age 71
CMS counts 11 Medicare patients who saw Dr. Walker in 2024. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 61, with 68% women.
Dr. Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Colleen Marie Walker wrote 3,134 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 3,134 Medicare Part D claims for 123 patients. 85% of them were for generic drugs. CMS names the drug for 2,531 of them, across 88 drugs with 11 or more claims each, at $213,508 in total drug cost. In 2023, CMS named 2,335 claims across 77 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic2,670 claims85%
- Brand-name and other464 claims15%
Dr. Walker's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Walker's Part D claims, 2024
- Opioids3%101 of 3,134 claims
- Antibiotics5%170 of 3,134 claims
- Antipsychotics, patients 65 and over1%25 of 3,134 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,3352024: 2,5318%
Drugs named by CMS: 88 in 2024, 77 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Colleen Marie Walker takes part in Medicare
Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Colleen Marie Walker received $12,816 in industry payments from 2016 to 2025
CMS Open Payments shows 373 general payments to Dr. Walker from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 47% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $7,075.
General payments to Dr. Walker by program year, 2016 to 2025
General payments to Dr. Walker by kind, 2016 to 2025
- Food and beverage$6,03247%
- Speaker and faculty fees$5,94046%
- Travel and lodging$7986%
- Education$460%
Companies that paid Dr. Walker the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Colleen Marie Walker graduated from University of Louisville School of Medicine
Dr. Walker graduated from University of Louisville School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Colleen Marie Walker's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Colleen Marie Walker
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Colleen Marie Walker's NPI number?
Dr. Colleen Marie Walker's NPI number is 1750346078. It was assigned on April 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Colleen Marie Walker?
Dr. Colleen Marie Walker is an internist in Louisville, Kentucky. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Colleen Marie Walker practice?
Dr. Walker practices at 3945 Nanz Ave, Louisville, KY 40207. Dr. Walker's primary practice is Colleen Walker MD in Louisville, Kentucky. Dmand AI also links Dr. Walker to 3 hospitals and 1 group practice or clinic.
What is Dr. Colleen Marie Walker's office phone number?
The practice phone on file for Dr. Walker is (502) 899-1100.
What is Dr. Colleen Marie Walker's medical license number?
Dr. Walker holds Kentucky license 38075.
Which hospitals is Dr. Colleen Marie Walker affiliated with?
Dr. Walker is affiliated with Norton Hospital. Dmand AI links Dr. Walker to 3 more hospitals.
What medical group is Dr. Colleen Marie Walker part of?
Dr. Walker is linked to Ultimate MD.
Does Dr. Colleen Marie Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 24 services in 2022, and Dr. Walker accepts Medicare assignment.
How many Medicare patients does Dr. Colleen Marie Walker see?
CMS counts 11 Medicare patients who saw Dr. Walker in 2024, with an average age of 71.
What services does Dr. Colleen Marie Walker bill to Medicare?
In 2022, Dr. Walker's most billed Medicare services were office visit, established patient (99213).
Show 4 more questionsShow fewer questions
Where did Dr. Colleen Marie Walker go to medical school?
Dr. Walker graduated from University of Louisville School of Medicine in 1991.
What drugs does Dr. Colleen Marie Walker prescribe most?
In 2024 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Rosuvastatin Calcium.
Has Dr. Colleen Marie Walker received payments from drug or device companies?
CMS Open Payments shows $12,816 in general payments to Dr. Walker from 37 companies from 2016 to 2025. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. Colleen Marie Walker been practicing?
Dr. Walker graduated from medical school in 1991, 35 years ago.
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