William Richard Seitter, MD
Pediatrics Physician · Mesa, AZ
William Richard Seitter, MD is a pediatrics physician with a practice address in Mesa, Arizona, and NPI 1720040207, issued on Apr 3, 2006. Check the license (Arizona 22859, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Richard Seitter
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 22859 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 4824 E Baseline RD, Mesa, AZ 85206
- Phone
- (480) 839-4848
- Enumerated
- Apr 3, 2006
- Record last updated
- Jul 1, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (480) 833-8310
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,309 in Arizona → Look up another NPI →
Also registered at 4824 E Baseline RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Richard Seitter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 22859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $123.41
6 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 21,580 providers of this specialty with any payment received $842.05 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.
William Richard Seitter among 1,309 pediatrics physician records in Arizona
William Richard Seitter, MD is one of 1,309 pediatrics physician records with a practice address in Arizona. 41% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 53% newer
- In a Medicare fileYes · 41% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2008 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in Arizona
There are 1,309 pediatrics physician records in Arizona.
All 1,309 in Arizona → Every provider in Mesa → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Michelle Allen, D.O.Mesa, AZ 852061902896590
- Trupti Amin-Chapman, M.D.Mesa, AZ 852061164412854
- Gary Auxier, M.D.Mesa, AZ 852061386613297
- Karl Baumgartner, MDMesa, AZ 852061174522890
- Lafe Carroll, D.O.Mesa, AZ 852061932178290
- H. Garner, M.D.Mesa, AZ 852061417947003
- Joseph Gassen, M.D.Mesa, AZ 852061972586006
- Dale Guthrie, M.D.Mesa, AZ 852061093784308
Common questions
What is William Richard Seitter, MD's NPI number?
William Richard Seitter, MD's National Provider Identifier (NPI) is 1720040207, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Richard Seitter, MD located?
The NPPES record lists a practice address at 4824 E Baseline RD, Mesa, AZ, 85206. Phone: (480) 839-4848. Providers update this record themselves, so call before visiting.
How can I verify William Richard Seitter, MD's license?
NPPES lists Arizona license number 22859, 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.
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.