DR. KARL W DIEHN M.D.
NPI 1467466623
Specialist in Baltimore, MD

Q: What is Karl Diehn's NPI number?

The NPI number for Karl Diehn is 1467466623. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Q: What is Karl Diehn's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Karl Diehn was last updated on December 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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 July 27, 2006PECOS Enrolled

6565 N CHARLES ST, SUITE 601, BALTIMORE, MD 21204(410) 821-5151(410) 823-8309 Get Directions Write a Review

NPPES record last updated: December 13, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Karl W Diehn M.d. NPPES

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

DR. KARL W DIEHN M.D. (NPI 1467466623) is an individual specialist in Baltimore, Maryland, licensed in Maryland (D0019874) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1467466623

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. KARL W DIEHNCredential: M.D.

Location Address6565 N CHARLES ST, SUITE 601Baltimore, MD 21204-6800

Mailing Address6565 N Charles St, Suite 601Baltimore, MD 21204-6800 · (410) 821-5151 · Fax (410) 823-8309

Phone(410) 821-5151

Fax(410) 823-8309

Sole ProprietorYes

Enumeration DateJuly 27, 2006

Last NPPES UpdateDecember 13, 2013

✔ NPI 1467466623 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in MD · D0019874

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

6565 N CHARLES ST, Baltimore, MD 21204

Open in Google Maps ↗

Other Identifiers 2

Medicare ID-Type UnspecifiedH522MD

Medicare UPINB66933MD

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Karl W Diehn M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

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

GAIL PATRICIA NUETZEL CRNP

Nurse Practitioner (Adult Health)

6565 N CHARLES ST, SUITE 512
TOWSON, MD 21204

Baltimore County (410) 583-0300

DR. SANJITI PODURY MD

Student in an Organized Health Care Education/Training Program

6565 N CHARLES ST
TOWSON, MD 21204

Baltimore County (443) 849-3760

RICELY AND SCHECHTER PA

Nurse Practitioner (Adult Health)

6565 N CHARLES ST, SUITE 615
TOWSON, MD 21204

Baltimore County (410) 339-7910

MS. CYNTHIA ANN FANNON AUD

Audiologist

6565 N CHARLES ST, SUITE 601
BALTIMORE, MD 21204

Baltimore County (410) 821-5151

DR. COURTENAY HYLTON MORROW D.O.

Family Medicine

6565 N CHARLES ST, PPE SUITE 411
BALTIMORE, MD 21204

Baltimore County (443) 849-2707

CHILDREN'S SURGICAL ASSOCIATES, LLC

Surgery (Pediatric Surgery)

6565 N CHARLES ST, STE 305
BALTIMORE, MD 21204

Baltimore County (443) 849-6201

DR. HMU MINN M.D.

Internal Medicine

6565 N CHARLES ST, STE 203
BALTIMORE, MD 21204

Baltimore County (443) 849-3760

FAWAD KHALIQ

Internal Medicine

6565 N CHARLES ST, PPE 203
TOWSON, MD 21204

Baltimore County (443) 849-3760

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 Diehn's NPI number?

The NPI number for Karl Diehn is 1467466623. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Where is Karl Diehn located?

Karl Diehn practices at 6565 N Charles St Suite 601, Baltimore, MD 21204. The listed phone number is (410) 821-5151.

What is Karl Diehn's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Karl Diehn enrolled in Medicare?

Yes. Karl Diehn is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Karl Diehn was last updated on December 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.