NPPES file of Aug 9, 2026

Timothy An-Thy Chan, MD, PHD

Radiation Oncology Physician · New York, NY

Timothy An-Thy Chan, MD, PHD is a radiation oncology physician with a practice address in New York, New York, and NPI 1538205620, issued on Jan 29, 2007. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1538205620
Name
Timothy An-Thy Chan
Credential
MD, PHD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
T0161 MD
Self-reported in NPPES; status is on the state search
Practice location
1275 York Ave, New York, NY 10065
Phone
(646) 888-2765
Enumerated
Jan 29, 2007
Record last updated
May 5, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200706001205); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1275 York Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nivedita Aanur, M.D.Internal Medicine Physician1982833471
  2. Amy Aaronson, AC-PNP, RNCritical Care Pediatric Nurse Practitioner1407323504
  3. Michelle Abboud, N.P.Acute Care Nurse Practitioner1730596008
  4. Gina Abdulahad, PA-CPhysician Assistant1174027064
  5. Wassim Abida, MD, PHDHematology & Oncology Physician1518101096
  6. Lincy Abraham, NPPediatric Nurse Practitioner1295003739

Verify Timothy An-Thy Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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One hospital affiliation

  1. Cleveland ClinicCleveland, OH · Acute Care Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Timothy An-Thy Chan among 449 radiation oncology physician records in New York

Timothy An-Thy Chan, MD, PHD is one of 449 radiation oncology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.

  • NPI issued2007 · 47% of these records are older, 46% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2002 · median 2005 among the 331 with a school on file
  • Record last updated2010 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in New York

There are 449 radiation oncology physician records in New York.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Christopher Barker, M.D.New York, NY 100651598959058
  2. Oren Cahlon, M.D.New York, NY 100651811155633
  3. Silvia Formenti, M.D.New York, NY 100651568463339
  4. Daniel Higginson, M.D.New York, NY 100651043472152
  5. Jonathan Knisely, MDNew York, NY 100651245228246
  6. Marisa Kollmeier, MDNew York, NY 100651215917612
  7. Sean McBride, MDNew York, NY 100651265671879
  8. William Polkinghorn, MDNew York, NY 100651821125287

Common questions

What is Timothy An-Thy Chan, MD, PHD's NPI number?

Timothy An-Thy Chan, MD, PHD's National Provider Identifier (NPI) is 1538205620, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Timothy An-Thy Chan, MD, PHD located?

The NPPES record lists a practice address at 1275 York Ave, New York, NY, 10065. Phone: (646) 888-2765. Providers update this record themselves, so call before visiting.

How can I verify Timothy An-Thy Chan, MD, PHD's license?

Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. 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.