Marshall Walker, OD
- Medicare patients, 2024
- 431
- Part D claims, 2024
- 315
- MIPS score, 2024
- 15
- Hospital affiliations
- 2
- Industry payments
- $116
- Practice address
- 1323 West 6th Street, Stillwater, OK 74076
- Practice phone
- Call (405) 372-1480
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Marshall 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.
Marshall Walker is an optometrist in Stillwater, Oklahoma
Marshall Walker practices at Stillwater Medical Center in Stillwater, Oklahoma, part of City of Stillwater, Oklahoma.
Marshall Walker's NPI, 1033554118, was assigned on May 2, 2013. Marshall Walker graduated from Pennsylvania College of Optometry in 2013. Marshall Walker holds Oklahoma license 2799.
- NPI
- 1033554118NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103149083
- NPI enumeration date
- May 2, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (405) 372-1480
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marshall Walker practices at Stillwater Medical Center in Stillwater, Oklahoma
Marshall Walker's primary practice is Stillwater Medical Center, at 1323 West 6th Street, Stillwater, OK 74076 in Payne County. The practice phone is (405) 372-1480.
- Stillwater Medical Center1323 West 6th Street, Stillwater, OK 74076 · Payne CountyPhone(405) 372-1480
Source: Dmand AI Affiliation Data
Marshall Walker is affiliated with 3 sites of care and 3 medical groups
Marshall Walker's primary practice is Stillwater Medical Center in Stillwater, Oklahoma, part of City of Stillwater, Oklahoma. The medical group on file is Stillwater Medical Center. Dmand AI also links Marshall Walker to 1 more hospital, 2 medical groups and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marshall Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marshall Walker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stillwater Medical Center | Available with a free account |
| +2 more sites and 2 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 City of Stillwater, Oklahoma and 6.2K+ hospitals, with verified contacts in the same login.
Marshall Walker is one of 712 optometrists in Oklahoma
Optometrist is Marshall Walker's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Marshall Walker is licensed in Oklahoma.
Specialties and state licenses
- Optometrist, OklahomaPrimary
Optometrists near Marshall 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
Marshall Walker treated 431 Medicare patients in 2024, average age 73
CMS counts 431 Medicare patients who saw Marshall Walker in 2024. The largest group is 65 to 74, with 209 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 12% are also on Medicaid. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Marshall Walker's median patient age at 62, with 62% women.
Marshall Walker's Medicare patients by age, 2024
Marshall Walker's Medicare patients by sex, 2024
- Women25459%
- Men17741%
Chronic conditions among Marshall Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Arthritis37%
- Diabetes29%
- Ischemic heart disease28%
- Mood disorders17%
- Depression15%
- Anxiety14%
Share of Medicare patients with each condition. A patient can have several.
Marshall 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 62
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marshall Walker wrote 315 Medicare Part D claims in 2024
In 2024, Marshall Walker wrote 315 Medicare Part D claims for 95 patients. 73% of them were for generic drugs.
Marshall Walker's Part D claims by kind of drug, 2024
- Generic231 claims73%
- Brand-name84 claims27%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Marshall Walker scored 15 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 15 out of 100 for Marshall Walker for performance year 2024, reported individually. Marshall Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 43 procedures of cataract surgery by Marshall Walker, more than 60% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Marshall Walker's MIPS scores, performance year 2024
- 15of 100Final score
- 30of 100Quality
- 0of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Marshall Walker ranks in Medicare procedure volume
- Cataract surgery
- 60th percentile43 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
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Marshall Walker received $116 in industry payments in 2025
CMS Open Payments shows 6 general payments to Marshall Walker from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $44.
Companies that paid Marshall 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
Marshall Walker graduated from Pennsylvania College of Optometry
Marshall Walker graduated from Pennsylvania College of Optometry in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Marshall 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 | 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)Doctors and Clinicians Utilization Data (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 Marshall 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 Marshall Walker's NPI number?
Marshall Walker's NPI number is 1033554118. It was assigned on May 2, 2013, and it is active in the NPI Registry.
What does Marshall Walker specialize in?
Marshall Walker is an optometrist in Stillwater, Oklahoma. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Marshall Walker practice?
Marshall Walker practices at 1323 West 6th Street, Stillwater, OK 74076. Marshall Walker's primary practice is Stillwater Medical Center in Stillwater, Oklahoma, part of City of Stillwater, Oklahoma. Dmand AI also links Marshall Walker to 1 hospital, 2 medical groups and 1 physician office.
What is Marshall Walker's office phone number?
The practice phone on file for Marshall Walker is (405) 372-1480.
What is Marshall Walker's medical license number?
Marshall Walker holds Oklahoma license 2799, one of 2 state licenses on file.
Which hospitals is Marshall Walker affiliated with?
Marshall Walker practices at Stillwater Medical Center in Stillwater, Oklahoma. Dmand AI links Marshall Walker to 1 more hospital.
What medical group is Marshall Walker part of?
Marshall Walker is linked to Stillwater Medical Center. Dmand AI links Marshall Walker to 2 more medical groups.
Does Marshall Walker accept Medicare?
Yes. CMS lists Marshall Walker as accepting Medicare assignment.
What is Marshall Walker's MIPS score?
Marshall Walker's MIPS final score for performance year 2024 is 15 out of 100, reported individually.
How many Medicare patients does Marshall Walker see?
CMS counts 431 Medicare patients who saw Marshall Walker in 2024, with an average age of 73.
Show 3 more questionsShow fewer questions
Where did Marshall Walker go to medical school?
Marshall Walker graduated from Pennsylvania College of Optometry in 2013.
Has Marshall Walker received payments from drug or device companies?
CMS Open Payments shows $116 in general payments to Marshall Walker from 4 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Marshall Walker been practicing?
Marshall Walker graduated from medical school in 2013, 13 years ago.
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