BeloniformesClinical ReasoningNeck Injuries
Dr. Gregory Brett Walker, MD
NPI1356793798
- Medicare services, 2017
- 68
- Part D claims, 2017
- 14
- Publications
- 8
- Hospital affiliations
- 1
- Industry payments
- $2,925
- Practice address
- 200 Lothrop Street, Muh E824, Pittsburgh, PA 15213
- Practice phone
- Call (412) 586-9821
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Gregory Brett Walker is a neurologist in Keyser, West Virginia
Dr. Walker practices at Select Specialty Hospital - Pittsburgh / UPMC in Pittsburgh, Pennsylvania, part of Select Medical Holdings.
Dr. Walker's NPI, 1356793798, was assigned on July 11, 2016. Dr. Walker holds Pennsylvania license MD460533.
NPI and contact details
- NPI
- 1356793798NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2016
- NPI status
- Active
- Practice phone
- (412) 586-9821
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Brett Walker practices in Pittsburgh and Keyser
Dr. Walker's primary practice is Select Specialty Hospital - Pittsburgh / UPMC, at 200 Lothrop Street, Muh E824, Pittsburgh, PA 15213 in Allegheny County. The practice phone is (412) 586-9821. The NPI Registry lists Dr. Walker's practice address as 537 S Mineral St, Keyser, WV 26726.
- Select Specialty Hospital - Pittsburgh / UPMCPrimary200 Lothrop Street, Muh E824, Pittsburgh, PA 15213 · Allegheny CountyPhone(412) 586-9821
- NPI Registry address537 S Mineral St, Keyser, WV 26726 · Mineral CountyPhone(412) 961-3962
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Gregory Brett Walker is affiliated with 1 site of care and 1 medical group
Dr. Walker's primary practice is Select Specialty Hospital - Pittsburgh / UPMC in Pittsburgh, Pennsylvania, part of Select Medical Holdings. The medical group on file is University of Pittsburgh Physicians, Department of Radiology.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Brett Walker'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 |
|---|---|
| Select Specialty Hospital - Pittsburgh / UPMC | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Walker practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Select Medical Holdings and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gregory Brett Walker is one of 115 neurologists in West Virginia
Neurology is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Walker is licensed in Pennsylvania.
Specialties and state licenses
- Neurology, PennsylvaniaPrimary
Neurologists near Dr. Walker
Counts of neurologists 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. Gregory Brett Walker billed Medicare for 68 services in 2017
CMS data shows 68 Medicare services from Dr. Walker across 3 procedure codes in 2017. Medicare paid $4,740 for them.
Medicare services, 201768
Paid by Medicare$4,740
Procedure codes3
Where Dr. Walker's Medicare services took place, 2017
- In an office1218%
- In a facility5682%
Dr. Walker compared with the West Virginia median for neurologists, 2017
- Dr. Walker
- West Virginia median
- Medicare services
- 68vs 27876% below
- Part D claims
- 14vs 33796% below
Medians across 113 neurologists in West Virginia with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2017
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 neurologists in West Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Brett Walker's patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 52, with 50% women.
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 52
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Gregory Brett Walker wrote 14 Medicare Part D claims in 2017
In 2017, Dr. Walker wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $130 in total drug cost.
Part D claims, 201714
Drugs named by CMS1
Total drug cost$130
Dr. Walker's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Find neurologists like Dr. Walker by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gregory Brett Walker has 8 publications on record
Dmand AI links 8 papers to Dr. Walker, published from 2013 to 2024. 2013 was the busiest year, with 2. The most frequent topics are Cells, Cultured and Cell Survival. Dr. Walker's most frequent co-authors are Ashutosh P. Jadhav, MD, PhD, Michel Cf Shamy, MD, FRCPC and Simon Daniel Xavier Thebault, MD.
Papers8
Years published2013 to 2024
Dr. Walker's papers by year, 2013 to 2024
Topics Dr. Walker writes about most
- Cells, Cultured
- Cell Survival
Dr. Walker's most frequent co-authors
- Ashutosh P. Jadhav, MD, PhD1 shared paper
- Michel Cf Shamy, MD, FRCPC1 shared paper
- Simon Daniel Xavier Thebault, MD1 shared paper
Recent publications by Dr. Walker
World Neurosurg
AngiographyImaging, Three-DimensionalSoftware
See who Dr. Walker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Walker works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Brett Walker received $2,925 in industry payments from 2017 to 2024
CMS Open Payments shows 16 general payments to Dr. Walker from 5 drug and device companies from 2017 to 2024. Travel and lodging make up the largest share, 84% of the total. Stryker Corporation paid the most, $2,610.
General payments to Dr. Walker by program year, 2017 to 2024
General payments to Dr. Walker by kind, 2017 to 2024
$2.9Kin total
- Travel and lodging$2,45484%
- Food and beverage$31611%
- Education$1565%
Companies that paid Dr. Walker the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gregory Brett 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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Gregory Brett 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. Gregory Brett Walker's NPI number?
Dr. Gregory Brett Walker's NPI number is 1356793798. It was assigned on July 11, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Brett Walker?
Dr. Gregory Brett Walker is a neurologist in Keyser, West Virginia. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Gregory Brett Walker practice?
Dr. Walker practices at 200 Lothrop Street, Muh E824, Pittsburgh, PA 15213. Dr. Walker also practices at 537 S Mineral St, Keyser, WV 26726. Dr. Walker's primary practice is Select Specialty Hospital - Pittsburgh / UPMC in Pittsburgh, Pennsylvania, part of Select Medical Holdings.
What is Dr. Gregory Brett Walker's office phone number?
The practice phone on file for Dr. Walker is (412) 586-9821.
What is Dr. Gregory Brett Walker's medical license number?
Dr. Walker holds Pennsylvania license MD460533.
Which hospitals is Dr. Gregory Brett Walker affiliated with?
Dr. Walker practices at Select Specialty Hospital - Pittsburgh / UPMC in Pittsburgh, Pennsylvania.
What medical group is Dr. Gregory Brett Walker part of?
Dr. Walker is linked to University of Pittsburgh Physicians, Department of Radiology.
Does Dr. Gregory Brett Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 68 services in 2017.
What services does Dr. Gregory Brett Walker bill to Medicare?
In 2017, Dr. Walker's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and office visit, established patient (99213).
What drugs does Dr. Gregory Brett Walker prescribe most?
In 2017 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Levothyroxine Sodium.
Show 4 more questionsShow fewer questions
Has Dr. Gregory Brett Walker received payments from drug or device companies?
CMS Open Payments shows $2,925 in general payments to Dr. Walker from 5 companies from 2017 to 2024. The largest total came from Stryker Corporation.
How long has Dr. Gregory Brett Walker been practicing?
Dr. Walker's NPI was assigned in 2016.
Does Dr. Gregory Brett Walker do research?
Dmand AI links 8 publications to Dr. Walker, published from 2013 to 2024.
Who does Dr. Gregory Brett Walker publish with?
Dr. Walker's most frequent co-authors are Ashutosh P. Jadhav, MD, PhD (1 shared paper), Michel Cf Shamy, MD, FRCPC (1 shared paper) and Simon Daniel Xavier Thebault, MD (1 shared paper).
Selling to neurology practices?
See neurologists in West Virginia 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