Geoffrey W. Chan, M.D.
Hematology & Oncology Physician · Collegeville, PA
Geoffrey W. Chan, M.D. is a hematology & oncology physician with a practice address in Collegeville, Pennsylvania, and NPI 1912962424, issued on Apr 18, 2006. Check the license (Pennsylvania MD432135, as entered in NPPES) on the Pennsylvania Department of State (PALS); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Geoffrey W. Chan
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD432135 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1250 S Collegeville RD, Collegeville, PA 19426
- Phone
- (610) 917-5256
- Enumerated
- Apr 18, 2006
- Record last updated
- Sep 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 1250 S Collegeville RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Brigandi, M.D., PH.D.Research Study Specialist1730578287
- Bhargav Chandrashekar, D.O.Preventive Medicine/Occupational Environmental Medicine Physician1003266511
- Peter Langmuir, MDPediatric Hematology & Oncology Physician1295151488
- Jeremey Levin, M.D.Medical Oncology Physician1871834721
- Andrew Lippa, M.D., PH.D.Pediatric Infectious Diseases Physician1659711935
- Perry Nisen, M.D., PH.D.Pediatric Hematology & Oncology Physician1508193897
Verify Geoffrey W. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD432135Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Hematology & Oncology Physician providers in Pennsylvania
There are 784 hematology & oncology physician records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other hematology & oncology physician records in Pennsylvania
- Erin Aakhus, M.D.Philadelphia, PA1255652087
- Abdullateef Abdulkareem, M.D.Lancaster, PA1386027068
- Charles Abrams, MDPhiladelphia, PA1184668071
- Tala AchkarPittsburgh, PA1104268242
- Monica Adedeji, MD, MPHHershey, PA1487146999
- Janak Adhikari, MDHershey, PA1588185847
- Giridhar Adiga, MDEphrata, PA1356374417
- Christian Adonizio, MDDanville, PA1932198629
- Parul Agarwal, MDPhiladelphia, PA1336534809
- Charu Aggarwal, MD, MPHPhiladelphia, PA1114181740
Common questions
What is Geoffrey W. Chan, M.D.'s NPI number?
Geoffrey W. Chan, M.D.'s National Provider Identifier (NPI) is 1912962424, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey W. Chan, M.D. located?
The NPPES record lists a practice address at 1250 S Collegeville RD, Collegeville, PA, 19426. Phone: (610) 917-5256. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey W. Chan, M.D.'s license?
NPPES lists Pennsylvania license number MD432135, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.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. 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.