Dr. John A. Walker Jr., MD
- Medicare services, 2024
- 357
- Medicare patients, 2024
- 159
- Part D claims, 2024
- 4,951
- MIPS score, 2024
- 88
- Industry payments
- $11,494
- Practice address
- 16052 Doctors Blvd, Hammond, LA 70403
- Practice phone
- Call (405) 602-6500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oklahoma Center for Orthopaedic & Multi - Specialty Surgery
Hammond, Louisiana
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 Jr. is a family medicine physician in Hammond, Louisiana
Dr. Walker practices at Oklahoma Center for Orthopaedic & Multi - Specialty Surgery in Hammond, Louisiana.
Dr. Walker's NPI, 1477536324, was assigned on November 23, 2005. Dr. Walker graduated from Louisiana State University School of Medicine in New Orleans in 1970. Dr. Walker holds Louisiana license 011436.
- NPI
- 1477536324NPI Registry (opens in a new tab)
- NPI enumeration date
- November 23, 2005
- NPI status
- Active
- Practice phone
- (405) 602-6500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 82
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John A. Walker Jr. practices at Oklahoma Center for Orthopaedic & Multi - Specialty Surgery in Hammond, Louisiana
Dr. Walker's primary practice is Oklahoma Center for Orthopaedic & Multi - Specialty Surgery, at 16052 Doctors Blvd, Hammond, LA 70403 in Tangipahoa Parish. The practice phone is (405) 602-6500.
- Oklahoma Center for Orthopaedic & Multi - Specialty Surgery16052 Doctors Blvd, Hammond, LA 70403 · Tangipahoa ParishPhone(405) 602-6500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John A. Walker Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Walker's primary practice is Oklahoma Center for Orthopaedic & Multi - Specialty Surgery in Hammond, Louisiana. The medical group on file is Family Medicine Physicians. Dmand AI also links Dr. Walker to 1 more group practice or clinic, 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. John A. Walker Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oklahoma Center for Orthopaedic & Multi - Specialty Surgery | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John A. Walker Jr. is one of 1,606 family medicine physicians in Louisiana
Family medicine is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Walker is licensed in Louisiana.
Specialties and state licenses
- Family medicine, LouisianaPrimary
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 Jr. billed Medicare for 357 services in 2024
CMS data shows 357 Medicare services from Dr. Walker across 3 procedure codes in 2024, for 159 Medicare patients. Medicare paid $24,825 for them. Every service was in an office.
Dr. Walker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3682024: 32611%
- Other services
- 2023: 02024: 31
- Tests and treatments
- 2023: 112024: 0100%
Dr. Walker compared with the Louisiana median for family medicine physicians, 2024
- Dr. Walker
- Louisiana median
- Medicare services
- 357vs 368Close to median
- Medicare patients
- 159vs 1515% above
- Part D claims
- 4,456vs 1,4293.1 times
Medians across 1,609 family medicine physicians in Louisiana 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walker and other family medicine physicians in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Walker Jr. treated 159 Medicare patients in 2024, average age 77
CMS counts 159 Medicare patients who saw Dr. Walker in 2024. The largest group is 75 to 84, with 76 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 74, with 50% women.
Dr. Walker's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Walker's Medicare patients by sex, 2024
- Women8956%
- Men7044%
Chronic conditions among Dr. Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis40%
- Ischemic heart disease36%
- Diabetes33%
- Chronic kidney disease23%
- Osteoporosis19%
- Atrial fibrillation17%
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 74
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John A. Walker Jr. wrote 4,951 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 4,951 Medicare Part D claims for 389 patients. 83% of them were for generic drugs. CMS names the drug for 4,456 of them, across 84 drugs with 11 or more claims each, at $545,767 in total drug cost. In 2023, CMS named 4,503 claims across 80 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic4,115 claims83%
- Brand-name795 claims16%
- Other41 claims1%
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
- Opioids0%18 of 4,951 claims
- Antibiotics2%105 of 4,951 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: 4,5032024: 4,4561%
Drugs named by CMS: 84 in 2024, 80 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. John A. Walker Jr. scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Walker for performance year 2024, reported as part of a group.
Dr. Walker's MIPS scores, performance year 2024
- 88of 100Final score
- 91.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 68of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John A. Walker Jr. received $11,494 in industry payments from 2016 to 2025
CMS Open Payments shows 772 general payments to Dr. Walker from 47 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. GlaxoSmithKline, LLC. paid the most, $1,707.
General payments to Dr. Walker by program year, 2016 to 2025
General payments to Dr. Walker by kind, 2016 to 2025
- Food and beverage$11,41299%
- Education$821%
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 Jr. graduated from Louisiana State University School of Medicine in New Orleans
Dr. Walker graduated from Louisiana State University School of Medicine in New Orleans in 1970.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John A. Walker Jr.'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 | Clinician Public Reporting: Overall MIPS Performance (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. John A. Walker Jr.
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 Jr.'s NPI number?
Dr. John A. Walker Jr.'s NPI number is 1477536324. It was assigned on November 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Walker Jr.?
Dr. John A. Walker Jr. is a family medicine physician in Hammond, Louisiana. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. John A. Walker Jr. practice?
Dr. Walker practices at 16052 Doctors Blvd, Hammond, LA 70403. Dr. Walker's primary practice is Oklahoma Center for Orthopaedic & Multi - Specialty Surgery in Hammond, Louisiana. Dmand AI also links Dr. Walker to 1 group practice or clinic.
What is Dr. John A. Walker Jr.'s office phone number?
The practice phone on file for Dr. Walker is (405) 602-6500.
What is Dr. John A. Walker Jr.'s medical license number?
Dr. Walker holds Louisiana license 011436.
What medical group is Dr. John A. Walker Jr. part of?
Dr. Walker is linked to Family Medicine Physicians.
Does Dr. John A. Walker Jr. accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 357 services in 2024.
What is Dr. John A. Walker Jr.'s MIPS score?
Dr. Walker's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
How many Medicare patients does Dr. John A. Walker Jr. see?
CMS counts 159 Medicare patients who saw Dr. Walker in 2024, with an average age of 77.
What services does Dr. John A. Walker Jr. bill to Medicare?
In 2024, Dr. Walker's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99213).
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Where did Dr. John A. Walker Jr. go to medical school?
Dr. Walker graduated from Louisiana State University School of Medicine in New Orleans in 1970.
What drugs does Dr. John A. Walker Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. John A. Walker Jr. received payments from drug or device companies?
CMS Open Payments shows $11,494 in general payments to Dr. Walker from 47 companies from 2016 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. John A. Walker Jr. been practicing?
Dr. Walker graduated from medical school in 1970, 56 years ago.
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