Dr. Allison L. Perrin, MD
Internal Medicine (Internal Medicine Physician)
901 E Willetta St
Phoenix, AZ 85006
Who else practices at this address →
Maricopa County includes primary care (13% of residents) and dental (0% of residents) and mental health (4% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Wayne State University School of Medicine (1995)
- Years since graduation
- 31
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 112
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1995Medical school: Wayne State University School of Medicine
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Internal Medicine Physician primary
AZ license 25790 -
Geriatric Medicine (Internal Medicine) Physician
AZ license 25790 -
Hospice and Palliative Medicine (Internal Medicine) Physician
AZ license 25790
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Banner - University Medical Center Phoenix Phoenix, AZ
Medical groups
- Banner Alzheimers Institute (26 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 112
- Services billed
- 391
- Patients’ average age
- 82
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 40-54 minutes | 173 | 96 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 63 | 38 |
| New patient office or other outpatient visit, 60-74 minutes | 37 | 37 |
| Established patient office or other outpatient visit, 30-39 minutes | 16 | 15 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Donepezil Hcl Other prescribers in Phoenix, AZ | 89 |
| Mirtazapine Other prescribers in Phoenix, AZ | 78 |
| Sertraline Hcl Other prescribers in Phoenix, AZ | 72 |
| Escitalopram Oxalate Other prescribers in Phoenix, AZ | 59 |
| Memantine Hcl Other prescribers in Phoenix, AZ | 54 |
| Quetiapine Fumarate Other prescribers in Phoenix, AZ | 49 |
| Trazodone Hcl Other prescribers in Phoenix, AZ | 34 |
| Amlodipine Besylate Other prescribers in Phoenix, AZ | 22 |
| Citalopram Hbr (citalopram hydrobromide) Other prescribers in Phoenix, AZ | 18 |
| Carbidopa-Levodopa (carbidopa/levodopa) Other prescribers in Phoenix, AZ | 16 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $64,383 in research payments for these studies, mostly to the institutions running them.
- Study name not reported
Novo Nordisk As - A Phase 2, Randomized, Double-blind, Placebo-controlled Parallel Group Study of VHB937 in Amyotrophic Lateral Sclerosis (ALS) Over 40 Weeks Followed by an Open Label Extension (ASTRALS)
Novartis Pharmaceuticals Corporation
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.