Dr. John A. Walker II, MD
- Medicare services, 2023
- 42
- Part D claims, 2024
- 108
- Publications
- 3
- Hospital affiliations
- 5
- Industry payments
- $5,109
- Practice address
- 803 Poplar Street, Murray, KY 42071
- Practice phone
- Call (270) 762-1100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. John A. Walker II is a family medicine physician in Murray, Kentucky
Dr. Walker practices at Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital.
Dr. Walker's NPI, 1861631947, was assigned on February 12, 2009. Dr. Walker graduated from University of Kentucky College of Medicine in 2005. Dr. Walker holds Kentucky license 47349.
- NPI
- 1861631947NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527113695
- NPI enumeration date
- February 12, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (270) 762-1100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Walker II practices at Murray-Calloway County Hospital in Murray, Kentucky
Dr. Walker's primary practice is Murray-Calloway County Hospital, at 803 Poplar Street, Murray, KY 42071 in Calloway County. The practice phone is (270) 762-1100.
- Murray-Calloway County Hospital803 Poplar Street, Murray, KY 42071 · Calloway CountyPhone(270) 762-1100
Source: Dmand AI Affiliation Data
Dr. John A. Walker II is affiliated with 7 sites of care and 6 medical groups
Dr. Walker's primary practice is Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital. Dr. Walker is also affiliated with Norton Hospital. The medical group on file is Murray Medical Associates. Dmand AI also links Dr. Walker to 3 more hospitals, 5 medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John A. Walker II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Murray-Calloway County Hospital | Available with a free account |
| +6 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Murray-Calloway County Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John A. Walker II is one of 1,648 family medicine physicians in Kentucky
Family medicine is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dmand AI has Dr. Walker's licenses on file in 2 states: Kentucky and Ohio.
Specialties and state licenses
- Family medicine, KentuckyPrimary
- Ohio license
Family medicine physicians near Dr. Walker
Counts of family medicine physicians 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. John A. Walker II billed Medicare for 42 services in 2023
CMS data shows 42 Medicare services from Dr. Walker across 2 procedure codes in 2023, all of them office visits. Medicare paid $1,511 for them. Every service was in an office.
Dr. Walker's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 4382023: 4290%
- Tests and treatments
- 2022: 742023: 0100%
- Other services
- 2022: 1792023: 0100%
Dr. Walker compared with the Kentucky median for family medicine physicians, 2023
- Dr. Walker
- Kentucky median
- Medicare services
- 42vs 42190% below
- Part D claims
- 3,214vs 1,64196% above
Medians across 1,692 family medicine physicians in Kentucky with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Walker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walker and other family medicine physicians in Kentucky.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Walker II's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 56, with 53% 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 56
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. John A. Walker II wrote 108 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 108 Medicare Part D claims for 20 patients. 92% of them were for generic drugs. They cover 93 drugs, with $312,919 in total drug cost. In 2022, CMS named 11,366 claims across 205 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic99 claims92%
- Brand-name and other9 claims8%
Dr. Walker's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 11,3662023: 3,21472%
Drugs named by CMS: 93 in 2023, 205 in 2022.
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. John A. Walker II 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. John A. Walker II has 3 publications on record
Dmand AI links 3 papers to Dr. Walker, published from 2014 to 2017. The most frequent topics are Hippocampus and Memory. Dr. Walker's most frequent co-author is Neal J. Cohen, MD.
Dr. Walker's papers by year, 2014 to 2017
Topics Dr. Walker writes about most
- Hippocampus
- Memory
Dr. Walker's most frequent co-authors
Recent publications by Dr. Walker
Neuropsychologia
See who Dr. Walker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Walker works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John A. Walker II received $5,109 in industry payments from 2016 to 2025
CMS Open Payments shows 398 general payments to Dr. Walker from 38 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Pfizer Inc. paid the most, $485.
General payments to Dr. Walker by program year, 2016 to 2025
General payments to Dr. Walker by kind, 2016 to 2025
- Food and beverage$4,97797%
- Education$1323%
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. John A. Walker II graduated from University of Kentucky College of Medicine
Dr. Walker graduated from University of Kentucky College of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John A. Walker II'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John A. Walker II
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. John A. Walker II's NPI number?
Dr. John A. Walker II's NPI number is 1861631947. It was assigned on February 12, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Walker II?
Dr. John A. Walker II is a family medicine physician in Murray, Kentucky. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. John A. Walker II practice?
Dr. Walker practices at 803 Poplar Street, Murray, KY 42071. Dr. Walker's primary practice is Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital. Dmand AI also links Dr. Walker to 3 hospitals, 5 medical groups and 2 group practices and clinics.
What is Dr. John A. Walker II's office phone number?
The practice phone on file for Dr. Walker is (270) 762-1100.
What is Dr. John A. Walker II's medical license number?
Dr. Walker holds Kentucky license 47349, one of the licenses on file in 2 states.
Which states has Dr. John A. Walker II been licensed in?
Dmand AI has state licenses on file for Dr. Walker in Kentucky and Ohio.
Which hospitals is Dr. John A. Walker II affiliated with?
Dr. Walker practices at Murray-Calloway County Hospital in Murray, Kentucky. Dr. Walker is also affiliated with Norton Hospital. Dmand AI links Dr. Walker to 3 more hospitals.
What medical group is Dr. John A. Walker II part of?
Dr. Walker is linked to Murray Medical Associates. Dmand AI links Dr. Walker to 5 more medical groups.
Does Dr. John A. Walker II accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 42 services in 2023, and Dr. Walker accepts Medicare assignment.
What services does Dr. John A. Walker II bill to Medicare?
In 2023, Dr. Walker's most billed Medicare services were office visit, established patient (99215) and office visit, established patient (99214).
Show 6 more questionsShow fewer questions
Where did Dr. John A. Walker II go to medical school?
Dr. Walker graduated from University of Kentucky College of Medicine in 2005.
What drugs does Dr. John A. Walker II prescribe most?
In 2023 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Atorvastatin Calcium, Fenofibrate and Lisinopril.
Has Dr. John A. Walker II received payments from drug or device companies?
CMS Open Payments shows $5,109 in general payments to Dr. Walker from 38 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. John A. Walker II been practicing?
Dr. Walker graduated from medical school in 2005, 21 years ago.
Does Dr. John A. Walker II do research?
Dmand AI links 3 publications to Dr. Walker, published from 2014 to 2017.
Who does Dr. John A. Walker II publish with?
Dr. Walker's most frequent co-authors are Neal J. Cohen, MD (3 shared papers).
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