Quick answers
- Which hospitals does John N. Allan work at?
- Medicare's official clinician data lists John N. Allan at 1 hospital: New York-Presbyterian Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John N. Allan see patients?
- Medicare's clinician data lists 1 practice location in New York, NY. Call before your visit to confirm the address.
- What is John N. Allan's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology.
- Does John N. Allan accept Medicare assignment?
- Yes. Medicare's clinician data says John N. Allan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John N. Allan offer telehealth?
- Medicare's clinician data says John N. Allan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John N. Allan?
- (646) 962-2012, as listed in official Medicare / NPI Registry data.
- What is John N. Allan's NPI number?
- 1144462441. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John N. Allan works
Medicare's Facility Affiliation Data lists John N. Allan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · CCN 330101
Practice locations
Addresses where John N. Allan is enrolled with Medicare (CMS data updated 2026-10-02).
- 520 E 70th StNew York, NY 10021 (646) 962‑2012
Group practices
Medicare enrollment lists John N. Allan as a member of this group (CMS data updated 2026-10-02).
- Weill Medical College of Cornell2,051 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematologyalso
Other oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144462441 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians