Doctor profile · Federal record
Dr. Bart Demaerschalk, M.D.
Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Neurology Physician · Phoenix, AZ
- NPI 1457335994
- MIPS 78.6 / 100 · 2023
- 21 yrs on file
- Licensed in 12 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5777 E Mayo Blvd
Phoenix, AZ 85054
(480) 301-8000
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- October 31, 2025
- Specialty taxonomy
- 2084N0400X — NUCC code
- State licenses (12)
- Arizona #29047 · Florida #ME127231 · Oklahoma #33826 · Missouri #2016026970 · Vermont #042.0012901 · Minnesota #60040 · Nevada #15084 · Georgia #075778 · Iowa #43464 · New Hampshire #16343 · Wisconsin #65691 · Maine #MD20204
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457335994. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
223
Distinct HCPCS
9
Medicare allowed
$27,898
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 53 | 34 | $49 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 34 | 26 | $116 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 29 | 27 | $170 | |
99285 |
Emergency department visit with high level of medical decision making | 27 | 25 | $172 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 24 | 24 | $175 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 16 | 16 | $204 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $123 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 13 | 12 | $81 | |
G0426 |
Telehealth consultation, emergency department or initial inpatient, typically 50 minutes communicating with the patient via telehealth | 13 | 13 | $119 |
In context: peer comparison
Among 50 peers in Phoenix Neurology Physician, average services per provider: 1,116. This provider delivers 0.2× the peer median.Open Payments
Industry payments received
All-time total
$7,120
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Genentech, INC. | 1 | $5,520.00 | |
| Teladoc Health, INC. | 1 | $1,599.65 |
By nature of payment
Frequently asked questions
What is Dr. Bart Demaerschalk's medical specialty?
Dr. Bart Demaerschalk practices Neurology Physician in Phoenix, AZ.
Where does Dr. Bart Demaerschalk practice?
Dr. Bart Demaerschalk practices at 5777 E Mayo Blvd, Phoenix, AZ 85054. Office phone: 4803018000.
What is Dr. Bart Demaerschalk's NPI?
Dr. Bart Demaerschalk's National Provider Identifier (NPI) is 1457335994, issued by NPPES.
What procedures does Dr. Bart Demaerschalk commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.