Bart M Demaerschalk, M.D.
Neurology · Phoenix, AZ
At a glance
5777 E Mayo Blvd, Phoenix, AZ 85054
NPPES record updated Oct 31, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
This clinician has a currently effective opt-out record in the imported CMS file. Ask the practice about payment arrangements before booking.
- Effective Oct 10, 2025 through Oct 10, 2027
Source: Opt Out Affidavits : 2026-08-01 · Reporting period: 2026-08-01 to 2026-08-31 · Published Sep 21, 2026.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
5777 E Mayo BlvdPhoenix, AZ 85054
Education & affiliations
No matching clinician background record in the imported CMS release.
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Neurology
- Taxonomy code
- 2084N0400X
- Enumeration date
- Nov 29, 2005
- Record updated
- Oct 31, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
2084N0400X
License reported: ME127231 FL
2084N0400X
License reported: 33826 OK
2084N0400X
License reported: 2016026970 MO
2084N0400X
License reported: 042.0012901 VT
2084N0400X
License reported: 60040 MN
2084N0400X · Primary
License reported: 29047 AZ
2084N0400X
License reported: 15084 NV
2084N0400X
License reported: 075778 GA
2084N0400X
License reported: 43464 IA
2084N0400X
License reported: 16343 NH
2084N0400X
License reported: 65691 WI
2084N0400X
License reported: MD20204 ME
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
5777 E Mayo BlvdPhoenix, AZ 85054
- Phone
- (480) 301-8000
Mailing address
5777 E MAYO BLVDPHOENIX, AZ 850544502
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue