DR. JOHN LOUIS RYAN M.D.
NPI 1821046095
Internal Medicine - Infectious Disease in New York, NY

Active since May 04, 2006
450 E 29TH ST, KADMON CORPORATION, LLC, NEW YORK, NY 10016(212) 308-6000 Get Directions Write a Review

NPPES record last updated: July 22, 2014. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. John Louis Ryan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN LOUIS RYAN M.D. (NPI 1821046095) is an individual infectious disease provider in New York, New York, licensed in New York (268115) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1821046095
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. JOHN LOUIS RYANCredential: M.D.
Location Address450 E 29TH ST, KADMON CORPORATION, LLCNew York, NY 10016-8367
Mailing Address450 E 29th St, Kadmon Corporation, LlcNew York, NY 10016-8367 · (212) 308-6000
Sole ProprietorYes
Enumeration DateMay 4, 2006
Last NPPES UpdateJuly 22, 2014
NPI 1821046095 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses Licensed in NY · 268115 Licensed in MA · 82080
Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

450 E 29TH ST, New York, NY 10016

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinical Medical Laboratory
450 E 29TH ST, KADMON CORPORATION, LLC 16TH FLOOR
NEW YORK, NY 10016

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Ryan's NPI number?

The NPI number for John Ryan is 1821046095. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is John Ryan located?

John Ryan practices at 450 E 29th St Kadmon Corporation, LLC, New York, NY 10016. The listed phone number is (212) 308-6000.

What is John Ryan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

When was this NPI record last updated?

The NPPES record for John Ryan was last updated on July 22, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.