Dr. Larry J. Walker, MD
- Medicare services, 2024
- 3,096
- Medicare patients, 2024
- 962
- Part D claims, 2024
- 882
- Hospital affiliations
- 5
- Industry payments
- $3,511
- Practice address
- 810 Franklin SE St, Huntsville, AL 35801
- Practice phone
- Call (256) 533-7676
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Huntsville Renal Clinic
Huntsville, Alabama
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. Larry J. Walker is a nephrologist in Huntsville, Alabama
Dr. Walker practices at Huntsville Renal Clinic in Huntsville, Alabama.
Dr. Walker's NPI, 1538140587, was assigned on November 8, 2005. Dr. Walker graduated from University of Wisconsin School of Medicine in 1996. Dr. Walker holds Alabama license 21290.
- NPI
- 1538140587NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991760258
- NPI enumeration date
- November 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (256) 533-7676
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Larry J. Walker practices at Huntsville Renal Clinic in Huntsville, Alabama
Dr. Walker's primary practice is Huntsville Renal Clinic, at 810 Franklin SE St, Huntsville, AL 35801 in Madison County. The practice phone is (256) 533-7676.
- Huntsville Renal Clinic810 Franklin SE St, Huntsville, AL 35801 · Madison CountyPhone(256) 533-7676
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Larry J. Walker is affiliated with 12 sites of care and 1 medical group
Dr. Walker's primary practice is Huntsville Renal Clinic in Huntsville, Alabama. Dr. Walker is also affiliated with Huntsville Hospital. The medical group on file is Huntsville Renal Clinic. Dmand AI also links Dr. Walker to 4 more hospitals, 5 dialysis centers 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. Larry J. Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Huntsville Renal Clinic | Available with a free account |
| +11 more affiliated sites | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Larry J. Walker is one of 185 nephrologists in Alabama
Nephrology is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Walker is licensed in Alabama.
Specialties and state licenses
- Nephrology, AlabamaPrimary
Nephrologists near Dr. Walker
Counts of nephrologists 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. Larry J. Walker billed Medicare for 3,096 services in 2024
CMS data shows 3,096 Medicare services from Dr. Walker across 13 procedure codes in 2024, for 962 Medicare patients. Medicare paid $236,836 for them.
Dr. Walker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,3082024: 2,01813%
- Tests and treatments
- 2023: 6722024: 6218%
- Other services
- 2023: 02024: 457
Where Dr. Walker's Medicare services took place, 2024
- In an office1,64553%
- In a facility1,45147%
Dr. Walker compared with the Alabama median for nephrologists, 2024
- Dr. Walker
- Alabama median
- Medicare services
- 3,096vs 1,2742.4 times
- Medicare patients
- 962vs 3402.8 times
- Part D claims
- 660vs 80818% below
Medians across 180 nephrologists in Alabama with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2024
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 nephrologists in Alabama.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Larry J. Walker treated 962 Medicare patients in 2024, average age 75
CMS counts 962 Medicare patients who saw Dr. Walker in 2024. The largest group is 75 to 84, with 379 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 3.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 72, with 44% women.
Dr. Walker's Medicare patients by age, 2024
Dr. Walker's Medicare patients by sex, 2024
- Women41143%
- Men55157%
Chronic conditions among Dr. Walker's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes59%
- Arthritis56%
- Ischemic heart disease56%
- Heart failure44%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
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 72
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Larry J. Walker wrote 882 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 882 Medicare Part D claims for 247 patients. 90% of them were for generic drugs. CMS names the drug for 660 of them, across 19 drugs with 11 or more claims each, at $51,328 in total drug cost. In 2023, CMS named 760 claims across 24 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic798 claims90%
- Brand-name84 claims10%
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
- Antibiotics2%14 of 882 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: 7602024: 66013%
Drugs named by CMS: 19 in 2024, 24 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
Dr. Larry J. Walker offers telehealth to Medicare patients
Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Walker as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Larry J. Walker received $3,511 in industry payments from 2016 to 2025
CMS Open Payments shows 163 general payments to Dr. Walker from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $619.
General payments to Dr. Walker by program year, 2016 to 2025
General payments to Dr. Walker by kind, 2016 to 2025
- Food and beverage$3,507100%
- Education$40%
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. Larry J. Walker graduated from University of Wisconsin School of Medicine
Dr. Walker graduated from University of Wisconsin School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Larry J. 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. Larry J. 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. Larry J. Walker's NPI number?
Dr. Larry J. Walker's NPI number is 1538140587. It was assigned on November 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Larry J. Walker?
Dr. Larry J. Walker is a nephrologist in Huntsville, Alabama. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Larry J. Walker practice?
Dr. Walker practices at 810 Franklin SE St, Huntsville, AL 35801. Dr. Walker's primary practice is Huntsville Renal Clinic in Huntsville, Alabama. Dmand AI also links Dr. Walker to 4 hospitals, 5 dialysis centers and 1 group practice or clinic.
What is Dr. Larry J. Walker's office phone number?
The practice phone on file for Dr. Walker is (256) 533-7676.
What is Dr. Larry J. Walker's medical license number?
Dr. Walker holds Alabama license 21290.
Which hospitals is Dr. Larry J. Walker affiliated with?
Dr. Walker is affiliated with Huntsville Hospital. Dmand AI links Dr. Walker to 4 more hospitals.
What medical group is Dr. Larry J. Walker part of?
Dr. Walker is linked to Huntsville Renal Clinic.
Does Dr. Larry J. Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 3,096 services in 2024, and Dr. Walker accepts Medicare assignment.
Does Dr. Larry J. Walker offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Walker as offering telehealth services.
How many Medicare patients does Dr. Larry J. Walker see?
CMS counts 962 Medicare patients who saw Dr. Walker in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Larry J. Walker bill to Medicare?
In 2024, Dr. Walker's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Larry J. Walker go to medical school?
Dr. Walker graduated from University of Wisconsin School of Medicine in 1996.
What drugs does Dr. Larry J. Walker prescribe most?
In 2024 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Amlodipine Besylate, Furosemide and Losartan Potassium.
Has Dr. Larry J. Walker received payments from drug or device companies?
CMS Open Payments shows $3,511 in general payments to Dr. Walker from 30 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Larry J. Walker been practicing?
Dr. Walker graduated from medical school in 1996, 30 years ago.
Selling to nephrology practices?
See nephrologists in Alabama by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card