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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

2 5TH AVENUE MEDICAL
NPI 1013839174
Internal Medicine - Rheumatology in New York, NY

Active since July 29, 2026
2 5TH AVE STE 9, NEW YORK, NY 10011(646) 580-3538(844) 841-8382 Get Directions Write a Review

NPPES record added: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About 2 5th Avenue Medical NPPES

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

2 5TH AVENUE MEDICAL (NPI 1013839174) is a healthcare organization registered as a rheumatology in New York, New York and active in the NPI registry since July 2026. The organization lists Jason Siefferman, Partber, as its authorized official.

NPPES Registry Identity

NPI1013839174
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business Name2 5TH AVENUE MEDICAL
Location Address2 5TH AVE STE 9New York, NY 10011-8855
Mailing Address2 5th Ave Ste 9New York, NY 10011-8855 · (646) 580-3538 · Fax (844) 841-8382
Phone(646) 580-3538
Fax(844) 841-8382
Organization SubpartNo
Authorized OfficialJason SieffermanPartber · (646) 580-3538
Enumeration DateJuly 29, 2026
Last NPPES UpdateJuly 31, 2026
NPPES CertifiedJuly 31, 2026
✔ NPI 1013839174 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
2 5TH AVE STE 9, New York, NY 10011
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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 2 5th Avenue Medical's NPI number?

The NPI number for 2 5th Avenue Medical is 1013839174. It was assigned to this organization in the NPPES registry on July 29, 2026.

Where is 2 5th Avenue Medical located?

2 5th Avenue Medical is located at 2 5th Ave Ste 9, New York, NY 10011. The listed phone number is (646) 580-3538.

What is 2 5th Avenue Medical's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

When was this NPI record last updated?

The NPPES record for 2 5th Avenue Medical was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.