Organization
2 5TH AVENUE MEDICAL
Active
Organization subpart
No
Provider details
NPI number
Authorized official
DR. JASON SIEFFERMAN MD (PARTBER)
(646) 580-3538
Entity
Organization
Contact information
Practice address
2 5TH AVE STE 9, NEW YORK, NY 10011-8855
(646) 580-3538
(844) 841-8382
Mailing address
2 5TH AVE STE 9, NEW YORK, NY 10011-8855
(646) 580-3538
(844) 841-8382
Taxonomy
Speciality
Code
Description
License number
State
207RR0500X
Rheumatology Physician
Primary
—
—
Other
Enumeration date
07/29/2026
Last updated
08/03/2026
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