Mark Allan Walker Jr., OD
- Medicare patients, 2024
- 750
- Part D claims, 2024
- 1,212
- MIPS score, 2024
- 92
- Industry payments
- $336
- Affiliated sites
- 1
- Practice address
- 2746 Old Us Highway 20 West, Elkhart, IN 46514
- Practice phone
- Call (574) 293-8366
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
INSIGHT Surgery Center - Elkhart
Surgery Center - Medicare-Certified · Elkhart, Indiana
Find Mark 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.
Mark Allan Walker Jr. is an optometrist in Elkhart, Indiana
Mark Walker practices at INSIGHT Surgery Center - Elkhart in Elkhart, Indiana.
Mark Walker's NPI, 1972731461, was assigned on June 23, 2009. Mark Walker graduated from Indiana University - School of Optometry in 2009. Mark Walker holds Indiana license 18003605A.
- NPI
- 1972731461NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749328706
- NPI enumeration date
- June 23, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (574) 293-8366
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Allan Walker Jr. practices at INSIGHT Surgery Center - Elkhart in Elkhart, Indiana
Mark Walker's primary practice is INSIGHT Surgery Center - Elkhart, at 2746 Old Us Highway 20 West, Elkhart, IN 46514. The practice phone is (574) 293-8366.
- INSIGHT Surgery Center - Elkhart2746 Old Us Highway 20 West, Elkhart, IN 46514Phone(574) 293-8366
Source: Dmand AI Affiliation Data
Mark Allan Walker Jr. is affiliated with 1 site of care and 1 medical group
Mark Walker's primary practice is INSIGHT Surgery Center - Elkhart in Elkhart, Indiana. Dmand AI also links Mark Walker to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Allan Walker Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Walker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| INSIGHT Surgery Center - Elkhart | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Allan Walker Jr. is one of 1,172 optometrists in Indiana
Optometrist is Mark Walker's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Mark Walker is licensed in Indiana.
Specialties and state licenses
- Optometrist, IndianaPrimary
Optometrists near Mark Walker
Counts of optometrists 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
Mark Allan Walker Jr. treated 750 Medicare patients in 2024, average age 76
CMS counts 750 Medicare patients who saw Mark Walker in 2024. The largest group is 65 to 74, with 308 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Walker's median patient age at 75, with 61% women.
Mark Walker's Medicare patients by age, 2024
Mark Walker's Medicare patients by sex, 2024
- Women45060%
- Men30040%
Chronic conditions among Mark Walker's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis41%
- Ischemic heart disease33%
- Diabetes27%
- Chronic kidney disease26%
- Osteoporosis22%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Mark 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 75
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Allan Walker Jr. wrote 1,212 Medicare Part D claims in 2024
In 2024, Mark Walker wrote 1,212 Medicare Part D claims for 315 patients. 63% of them were for generic drugs.
Mark Walker's Part D claims by kind of drug, 2024
- Generic759 claims63%
- Brand-name453 claims37%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark Allan Walker Jr. scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Mark Walker for performance year 2024, reported as part of a group. Mark Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mark Walker's MIPS scores, performance year 2024
- 92of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Mark Allan Walker Jr. received $336 in industry payments in 2025
CMS Open Payments shows 4 general payments to Mark Walker from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $150.
Companies that paid Mark Walker the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Allan Walker Jr. graduated from Indiana University - School of Optometry
Mark Walker graduated from Indiana University - School of Optometry in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Allan 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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)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 Mark Allan 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 Mark Allan Walker Jr.'s NPI number?
Mark Allan Walker Jr.'s NPI number is 1972731461. It was assigned on June 23, 2009, and it is active in the NPI Registry.
What does Mark Allan Walker Jr. specialize in?
Mark Allan Walker Jr. is an optometrist in Elkhart, Indiana. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Mark Allan Walker Jr. practice?
Mark Walker practices at 2746 Old Us Highway 20 West, Elkhart, IN 46514. Mark Walker's primary practice is INSIGHT Surgery Center - Elkhart in Elkhart, Indiana. Dmand AI also links Mark Walker to 1 medical group.
What is Mark Allan Walker Jr.'s office phone number?
The practice phone on file for Mark Walker is (574) 293-8366.
What is Mark Allan Walker Jr.'s medical license number?
Mark Walker holds Indiana license 18003605A.
Does Mark Allan Walker Jr. accept Medicare?
Yes. CMS lists Mark Walker as accepting Medicare assignment.
What is Mark Allan Walker Jr.'s MIPS score?
Mark Walker's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
How many Medicare patients does Mark Allan Walker Jr. see?
CMS counts 750 Medicare patients who saw Mark Walker in 2024, with an average age of 76.
Where did Mark Allan Walker Jr. go to medical school?
Mark Walker graduated from Indiana University - School of Optometry in 2009.
Has Mark Allan Walker Jr. received payments from drug or device companies?
CMS Open Payments shows $336 in general payments to Mark Walker from 4 companies from 2025 to 2025. The largest total came from Amgen Inc.
How long has Mark Allan Walker Jr. been practicing?
Mark Walker graduated from medical school in 2009, 17 years ago.
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