Ryan Matthew Casper, MD
Allergy & Immunology Physician · Peoria, AZ
Ryan Matthew Casper, MD is an allergy & immunology physician with a practice address in Peoria, Arizona, and NPI 1306898846, issued on May 16, 2006. Check the license (Arizona 36886, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ryan Matthew Casper
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 36886 AZ
46975 WI
Self-reported in NPPES; status is on the state search - Practice location
- 13965 N. 75TH Avenue, Peoria, AZ 85381
- Phone
- (602) 843-2991
- Enumerated
- May 16, 2006
- Record last updated
- Jul 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (602) 978-1226
- Medicaid ID
- 34552100 WI
- Medicare enrollment
- Enrolled (PECOS I20081110000335); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 88 in Arizona → Look up another NPI →
Also registered at 13965 N. 75TH Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Boesel, MDAllergy & Immunology Physician1154312858
- Eiza Ching, MDAllergy & Immunology Physician1740236298
- Levente Erdos, MDAllergy & Immunology Physician1659473197
- Ronald Jorgensen, MDAllergy & Immunology Physician1760473466
- Heather O'Connell, PA-CMedical Physician Assistant1730550799
- Christine Pratt, PAAllergy & Immunology Physician1033201074
Verify Ryan Matthew Casper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 36886Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average allergy & immunology physician in 2024
2,059 Medicare Part D claims for 392 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Ipratropium Bromide213 claims
- Trelegy Ellipta207 claims
- Azelastine Hcl171 claims
- Levocetirizine Dihydrochloride146 claims
- Albuterol Sulfate Hfa144 claims
- Montelukast Sodium119 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.
Industry payments in 2024: $3,823.52
176 payments; by number, the most common kind was food and beverage; the largest payer was Csl Behring. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Arizona Asthma Allergy Legacy PLCPeoria, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Matthew Casper among 88 allergy & immunology physician records in Arizona
Ryan Matthew Casper, MD is one of 88 allergy & immunology physician records with a practice address in Arizona. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 20% of them.
- NPI issued2006 · 20% of these records are older, 39% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2001 · median 2001 among the 57 with a school on file
- Record last updated2019 · 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 207K00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Arizona
There are 88 allergy & immunology physician records in Arizona.
All 88 in Arizona → Every provider in Peoria → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Kevin Boesel, MDPeoria, AZ 853811154312858
- Eiza Ching, MDPeoria, AZ 853811740236298
- Gregory Cowan, M.D.Peoria, AZ 853811164756904
- Levente Erdos, MDPeoria, AZ 853811659473197
- Ronald Jorgensen, MDPeoria, AZ 853811760473466
- Ronald Mittel, M.D.Peoria, AZ 853811407016348
- Christine Pratt, PAPeoria, AZ 853811033201074
- Mark Rose, MDPeoria, AZ 853811851382550
Common questions
What is Ryan Matthew Casper, MD's NPI number?
Ryan Matthew Casper, MD's National Provider Identifier (NPI) is 1306898846, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Matthew Casper, MD located?
The NPPES record lists a practice address at 13965 N. 75TH Avenue, Peoria, AZ, 85381. Phone: (602) 843-2991. Providers update this record themselves, so call before visiting.
How can I verify Ryan Matthew Casper, MD's license?
NPPES lists Arizona license number 36886, 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 Ryan Matthew Casper, MD prescribe under Medicare Part D?
In 2024, Ryan Matthew Casper, MD had 2,059 Medicare Part D claims for 392 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
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.