Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. JOHN SIDNEY KNAPP RN, AGPCNP-BC
NPI 1588085351
Registered Nurse - General Practice in New York, NY

Q: What is John Knapp's NPI number?

The NPI number for John Knapp is 1588085351. It was assigned to this individual provider in the NPPES registry on December 22, 2013.

Q: What is John Knapp's specialty?

The primary specialty registered for this NPI is Registered Nurse, specializing in General Practice, with taxonomy code 163WG0000X.

Q: When was this NPI record last updated?

The NPPES record for John Knapp was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since December 22, 2013

137 DUANE ST APT 5A, NEW YORK, NY 10013(917) 757-8550 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

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About Mr. John Sidney Knapp Rn, Agpcnp-bc NPPES

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

MR. JOHN SIDNEY KNAPP RN, AGPCNP-BC (NPI 1588085351) is an individual general practice provider in New York, New York, licensed in New York (603550) and active in the NPI registry since December 2013.

NPPES Registry Identity

NPI1588085351

Entity TypeIndividualMale

Primary Taxonomy163WG0000X

Provider Legal NameMR. JOHN SIDNEY KNAPPCredential: RN, AGPCNP-BC

Location Address137 DUANE ST APT 5ANew York, NY 10013-3898

Mailing Address137 Duane St Apt 5aNew York, NY 10013-3898 · (917) 757-8550

Phone(917) 757-8550

Sole ProprietorNo

Enumeration DateDecember 22, 2013

Last NPPES UpdateSeptember 23, 2026

NPPES CertifiedSeptember 23, 2026

✔ NPI 1588085351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRegistered Nurse · General PracticeNursing Service Providers

Taxonomy Code163WG0000X

License✔ Licensed in NY · 603550

137 DUANE ST APT 5A, New York, NY 10013

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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 Knapp's NPI number?

The NPI number for John Knapp is 1588085351. It was assigned to this individual provider in the NPPES registry on December 22, 2013.

Where is John Knapp located?

John Knapp practices at 137 Duane St Apt 5A, New York, NY 10013. The listed phone number is (917) 757-8550.

What is John Knapp's specialty?

The primary specialty registered for this NPI is Registered Nurse, specializing in General Practice, with taxonomy code 163WG0000X.

When was this NPI record last updated?

The NPPES record for John Knapp was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.