Brennan David Walker, APRN, CNP
- Medicare patients, 2024
- 760
- Part D claims, 2024
- 1,466
- MIPS score, 2024
- 84
- Hospital affiliations
- 5
- Industry payments
- $36
- Practice address
- 4050 West Memorial Road, Oklahoma City, OK 73120
- Practice phone
- Call (405) 608-3200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Brennan 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.
Brennan David Walker is an acute care nurse practitioner in Oklahoma City, Oklahoma
Brennan Walker practices at Oklahoma Heart Hospital North in Oklahoma City, Oklahoma, part of Oklahoma Heart Hospital.
Brennan Walker's NPI, 1215692702, was assigned on November 1, 2021. Brennan Walker holds Oklahoma license 204622.
- NPI
- 1215692702NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274923479
- NPI enumeration date
- November 1, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (405) 608-3200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Brennan David Walker practices at Oklahoma Heart Hospital North in Oklahoma City, Oklahoma
Brennan Walker's primary practice is Oklahoma Heart Hospital North, at 4050 West Memorial Road, Oklahoma City, OK 73120 in Oklahoma County. The practice phone is (405) 608-3200.
- Oklahoma Heart Hospital North4050 West Memorial Road, Oklahoma City, OK 73120 · Oklahoma CountyPhone(405) 608-3200
Source: Dmand AI Affiliation Data
Brennan David Walker is affiliated with 5 sites of care and 1 medical group
Brennan Walker's primary practice is Oklahoma Heart Hospital North in Oklahoma City, Oklahoma, part of Oklahoma Heart Hospital. Brennan Walker is also affiliated with OU Health University of Oklahoma Medical Center. The medical group on file is Oklahoma Heart Hospital. Dmand AI also links Brennan Walker to 3 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Brennan David Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Brennan Walker practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oklahoma Heart Hospital North | Available with a free account |
| +4 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 Oklahoma Heart Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Brennan David Walker is one of 298 acute care nurse practitioners in Oklahoma
Acute care is Brennan Walker's primary specialty in the NPI Registry, under taxonomy code 363LA2100X. Brennan Walker is licensed in Oklahoma.
Specialties and state licenses
- Acute care nurse practitioner, OklahomaPrimary
Acute care nurse practitioners near Brennan Walker
Counts of acute care nurse practitioners 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
Brennan David Walker treated 760 Medicare patients in 2024, average age 77
CMS counts 760 Medicare patients who saw Brennan Walker in 2024. The largest group is 75 to 84, with 320 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Brennan Walker's median patient age at 77, with 48% women.
Brennan Walker's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Brennan Walker's Medicare patients by sex, 2024
- Women37449%
- Men38651%
Chronic conditions among Brennan Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Arthritis54%
- Chronic kidney disease34%
- Diabetes33%
- Atrial fibrillation30%
- Mood disorders24%
Share of Medicare patients with each condition. A patient can have several.
Brennan 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 77
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Brennan David Walker wrote 1,466 Medicare Part D claims in 2024
In 2024, Brennan Walker wrote 1,466 Medicare Part D claims for 420 patients. 87% of them were for generic drugs.
Brennan Walker's Part D claims by kind of drug, 2024
- Generic1,276 claims87%
- Brand-name190 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Brennan David Walker scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Brennan Walker for performance year 2024, reported as part of a group. Brennan Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Brennan Walker's MIPS scores, performance year 2024
- 84of 100Final score
- 73of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 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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Brennan David Walker received $36 in industry payments in 2025
CMS Open Payments shows 2 general payments to Brennan Walker from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $20.
Companies that paid Brennan 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
Sources for Brennan David 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Brennan David 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 Brennan David Walker's NPI number?
Brennan David Walker's NPI number is 1215692702. It was assigned on November 1, 2021, and it is active in the NPI Registry.
What does Brennan David Walker specialize in?
Brennan David Walker is an acute care nurse practitioner in Oklahoma City, Oklahoma. The primary specialty in the NPI Registry is Acute Care Nurse Practitioner (taxonomy code 363LA2100X).
Where does Brennan David Walker practice?
Brennan Walker practices at 4050 West Memorial Road, Oklahoma City, OK 73120. Brennan Walker's primary practice is Oklahoma Heart Hospital North in Oklahoma City, Oklahoma, part of Oklahoma Heart Hospital. Dmand AI also links Brennan Walker to 3 hospitals.
What is Brennan David Walker's office phone number?
The practice phone on file for Brennan Walker is (405) 608-3200.
What is Brennan David Walker's medical license number?
Brennan Walker holds Oklahoma license 204622.
Which hospitals is Brennan David Walker affiliated with?
Brennan Walker practices at Oklahoma Heart Hospital North in Oklahoma City, Oklahoma. Brennan Walker is also affiliated with OU Health University of Oklahoma Medical Center. Dmand AI links Brennan Walker to 3 more hospitals.
What medical group is Brennan David Walker part of?
Brennan Walker is linked to Oklahoma Heart Hospital.
Does Brennan David Walker accept Medicare?
Yes. CMS lists Brennan Walker as accepting Medicare assignment.
What is Brennan David Walker's MIPS score?
Brennan Walker's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Brennan David Walker see?
CMS counts 760 Medicare patients who saw Brennan Walker in 2024, with an average age of 77.
Has Brennan David Walker received payments from drug or device companies?
CMS Open Payments shows $36 in general payments to Brennan Walker from 2 companies from 2025 to 2025. The largest total came from Pfizer Inc.
How long has Brennan David Walker been practicing?
Brennan Walker graduated from medical school in 2021, 5 years ago.
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