Willem J. Van Der Werf, M.D.
Transplant Surgery Physician · Phoenix, AZ
Willem J. Van Der Werf, M.D. is a transplant surgery physician 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 J. Van Der Werf
- Credential
- M.D.
- Primary taxonomy
- Transplant Surgery Physician 204F00000X
- 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
- Record last updated
- Nov 12, 2024
- Fax
- (602) 252-3861
- Medicaid IDs
- 119626000 WY
806894300 ID - Medicare enrollment
- Enrolled (PECOS I20160204001394); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest transplant surgery physician records → All 29 in Arizona → Look up another NPI →
Also registered at 2218 N 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Brink, M.D.Transplant Surgery Physician1417952516
- James Cashman, M.D.Transplant Surgery Physician1568467678
- Thomas Chaly, M.D.Transplant Surgery Physician1558525741
- Lawrence Koep, M.D.Transplant Surgery Physician1215932322
Verify Willem J. 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; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 524 providers of this specialty with any payment received $3,913.05 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.
Bills Medicare through 2 group practices
- Arizona Transplant Associates PCPhoenix, AZ
- St. Joseph's Hospital And Medical CenterPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Willem J. Van Der Werf among 29 transplant surgery physician records in Arizona
Willem J. Van Der Werf, M.D. is one of 29 transplant surgery physician records with a practice address in Arizona. 90% 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 24% of them.
- NPI issued2006 · 24% of these records are older, 62% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1988 · median 2003 among the 24 with a school on file
- Record last updated2024 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 204F00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Transplant Surgery Physician providers in Arizona
There are 29 transplant surgery physician records in Arizona.
All 29 in Arizona → Every provider in Phoenix → Transplant Surgery Physician nationwide →
The 8 transplant surgery physician records with the nearest ZIP codes
- Jeffrey Brink, M.D.Phoenix, AZ 850041417952516
- James Cashman, M.D.Phoenix, AZ 850041568467678
- Thomas Chaly, M.D.Phoenix, AZ 850041558525741
- Lawrence Koep, M.D.Phoenix, AZ 850041215932322
- Jaime Pineda, MDPhoenix, AZ 850041386887818
- Dev Desai, M.D.Phoenix, AZ 850161376626523
- Caroline Jadlowiec, M.D.Phoenix, AZ 850541194985531
- Marek Mazur, M.D.Phoenix, AZ 850541295712172
Common questions
What is Willem J. Van Der Werf, M.D.'s NPI number?
Willem J. 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 J. 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 J. 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), 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.