John Carruth Chapin, MD
Hematology & Oncology Physician · New York, NY
John Carruth Chapin, MD is a hematology & oncology physician with a practice address in New York, New York, and NPI 1205150869, issued on Mar 24, 2010. Check the license (New York 256429, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Carruth Chapin
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 256429 NY
Self-reported in NPPES; status is on the state search - Practice location
- 520 E 70TH St, New York, NY 10021
- Phone
- (646) 962-2065
- Enumerated
- Mar 24, 2010
- Record last updated
- Mar 27, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 520 E 70TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohammad Abubaker-SharifStudent in an Organized Health Care Education/Training Program1235713827
- Orel AgamiMedical Physician Assistant1215288485
- Yahya Al-Ghamdi, MBBSHematology (Pathology) Physician1578943999
- John Allan, M.D.Hematology & Oncology Physician1144462441
- Muna Alsharif, M.DDiagnostic Radiology Physician1457679813
- Marina Anosov, PHYSICIAN ASSISTANTPhysician Assistant1093005266
Verify John Carruth Chapin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 256429Check 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: $4,080.00
1 payment: consulting fee; the largest payer was Otsuka Pharmaceutical Development & Commercialization, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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.
John Carruth Chapin among 1,163 hematology & oncology physician records in New York
John Carruth Chapin, MD is one of 1,163 hematology & 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 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2014 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in New York → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Juliet Barker, MBBSNew York, NY 100211497726426
- Kathleen Cathcart, MDNew York, NY 100211508806050
- Chau Dang, MDNew York, NY 100211861422982
- Orli Etingin, MDNew York, NY 100211154418234
- Katharine Hsu, MDNew York, NY 100211720059769
- Jeffrey Laurence, MDNew York, NY 100211720175805
- Sebastian Alexander Mayer, MDNew York, NY 100211982627873
- Maria Palomba, MDNew York, NY 100211487625380
Common questions
What is John Carruth Chapin, MD's NPI number?
John Carruth Chapin, MD's National Provider Identifier (NPI) is 1205150869, issued on Mar 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is John Carruth Chapin, MD located?
The NPPES record lists a practice address at 520 E 70TH St, New York, NY, 10021. Phone: (646) 962-2065. Providers update this record themselves, so call before visiting.
How can I verify John Carruth Chapin, MD's license?
NPPES lists New York license number 256429, as entered by the provider. 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.