Allison Leigh Perrin, MD
Internal Medicine Physician · Phoenix, AZ
Allison Leigh Perrin, MD is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1992929624, issued on Apr 12, 2007. Check the license (Arizona 25790, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Allison Leigh Perrin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25790 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 901 E Willetta St, Phoenix, AZ 85006
- Phone
- (602) 839-6900
- Enumerated
- Apr 12, 2007
- Record last updated
- May 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (602) 839-6906
- Medicare enrollment
- Enrolled (PECOS I20081120000060); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 901 E Willetta St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allison Leigh Perrin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 25790Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average internal medicine physician in 2024
778 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Donepezil Hcl89 claims
- Mirtazapine78 claims
- Sertraline Hcl72 claims
- Escitalopram Oxalate59 claims
- Memantine Hcl54 claims
- Quetiapine Fumarate49 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,793.02
14 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Banner Alzheimers InstitutePhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison Leigh Perrin among 2,853 internal medicine physician records in Arizona
Allison Leigh Perrin, MD is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 47% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1995 · median 2003 among the 1,643 with a school on file
- Record last updated2014 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Lorna Honan, MDPhoenix, AZ 850061154395531
- Holger Kranich, M.D.Phoenix, AZ 850061780660266
- Marc Lee, MDPhoenix, AZ 850061962498709
- Stephen Leshin, M.D.Phoenix, AZ 850061396742771
- Anita Murcko, M.D.Phoenix, AZ 850061477558757
Common questions
What is Allison Leigh Perrin, MD's NPI number?
Allison Leigh Perrin, MD's National Provider Identifier (NPI) is 1992929624, issued on Apr 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Allison Leigh Perrin, MD located?
The NPPES record lists a practice address at 901 E Willetta St, Phoenix, AZ, 85006. Phone: (602) 839-6900. Providers update this record themselves, so call before visiting.
How can I verify Allison Leigh Perrin, MD's license?
NPPES lists Arizona license number 25790, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allison Leigh Perrin, MD prescribe under Medicare Part D?
In 2024, Allison Leigh Perrin, MD had 778 Medicare Part D claims for 134 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Allison Leigh Perrin, MD's MIPS final score?
The 2023 MIPS final score is 98.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.