Willem Van Der Werf, M.D.
Specialist · Phoenix, AZ
Willem Van Der Werf, M.D. is a specialist with a practice address in Phoenix, Arizona, and NPI 1275563397, issued on Jul 4, 2006. Check the license (Arizona 49927, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Willem Van Der Werf
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License numbers
- 49927 AZ
5249271205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 2218 N 3RD St, Phoenix, AZ 85004
- Phone
- (602) 252-2543
- Enumerated
- Jul 4, 2006
- Entity
- Type 1 · individual
Also registered at 2218 N 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Chaly, M.D.Surgery Physician1558525741
- Lawrence Koep, M.D.Transplant Surgery Physician1215932322
Verify Willem Van Der Werf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 49927Check 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: $3,337.66
6 payments, mostly food and beverage; the largest payer was Intuitive Surgical, Inc.. The 9,482 providers of this specialty with any payment received $4,756.65 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.
2 hospital and facility affiliations
- Arizona Transplant Associates PCPhoenix, AZ
- St. Joseph's Hospital And Medical CenterPhoenix, AZ
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Specialist providers in Arizona
There are 959 specialist records in Arizona.
Other specialist records in Arizona
- Michael Abeshaus, MDFlagstaff, AZ1326019746
- Howard Abrams, M.D.Phoenix, AZ1265459978
- Rashael AchinivuPeoria, AZ1952698573
- Claire Acuff, PTAAvondale, AZ1639523806
- Deborah Adams-CourtlandPrescott, AZ1457795866
- Phyllis Adamson, IBCLCGlendale, AZ1164631222
- Philip Adelson, MDPhoenix, AZ1942271317
- Rahmat Afrasiabi, M.D.Prescott, AZ1811961204
- Stuart AgrenMesa, AZ1851392781
- Nitun AhirScottsdale, AZ1831895507
Common questions
What is Willem Van Der Werf, M.D.'s NPI number?
Willem Van Der Werf, M.D.'s National Provider Identifier (NPI) is 1275563397, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Willem Van Der Werf, M.D. located?
The NPPES record lists a practice address at 2218 N 3RD St, Phoenix, AZ, 85004. Phone: (602) 252-2543. Providers update this record themselves, so call before visiting.
How can I verify Willem Van Der Werf, M.D.'s license?
NPPES lists Arizona license number 49927, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.