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

MR. KARL RADLEY KATTERJOHN P.A.
NPI 1851340186
Physician Assistant - Medical in Silver Spring, MD

Q: What is Karl Katterjohn's NPI number?

The NPI number for Karl Katterjohn is 1851340186. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Q: What is Karl Katterjohn's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Q: When was this NPI record last updated?

The NPPES record for Karl Katterjohn was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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 May 05, 2006

9039 SLIGO CREEK PKWY, APT 1401, SILVER SPRING, MD 20901(301) 792-4484 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mr. Karl Radley Katterjohn P.a. NPPES

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

MR. KARL RADLEY KATTERJOHN P.A. (NPI 1851340186) is an individual medical provider in Silver Spring, Maryland, licensed in Maryland (C0000435) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1851340186

Entity TypeIndividualMale

Primary Taxonomy363AM0700X

Provider Legal NameMR. KARL RADLEY KATTERJOHNCredential: P.A.

Location Address9039 SLIGO CREEK PKWY, APT 1401Silver Spring, MD 20901-3301

Mailing Address9039 Sligo Creek Pkwy, Apt 1401Silver Spring, MD 20901-3301 · (301) 792-4484

Phone(301) 792-4484

Sole ProprietorNo

Enumeration DateMay 5, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1851340186 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363AM0700X

License✔ Licensed in MD · C0000435

9039 SLIGO CREEK PKWY, Silver Spring, MD 20901

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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 Karl Katterjohn's NPI number?

The NPI number for Karl Katterjohn is 1851340186. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Karl Katterjohn located?

Karl Katterjohn practices at 9039 Sligo Creek Pkwy Apt 1401, Silver Spring, MD 20901. The listed phone number is (301) 792-4484.

What is Karl Katterjohn's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

When was this NPI record last updated?

The NPPES record for Karl Katterjohn was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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.