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

BARBARA ELEONORE CHRISTIANA KNOLLMANN-RITSCHEL MD
NPI 1659342194
Pathology - Anatomic Pathology & Clinical Pathology in Bethesda, MD

Q: What is Barbara Knollmann-ritschel's NPI number?

The NPI number for Barbara Knollmann-ritschel is 1659342194. It was assigned to this individual provider in the NPPES registry on February 1, 2006.

Q: What is Barbara Knollmann-ritschel's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Active since February 01, 2006

8901 WISCONSIN AVE, PATHOLOGY DEPARTMENT, 3RD FLOOR, BETHESDA, MD 20889(301) 295-2520 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 Barbara Eleonore Christiana Knollmann-ritschel Md NPPES

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

BARBARA ELEONORE CHRISTIANA KNOLLMANN-RITSCHEL MD (NPI 1659342194) is an individual anatomic pathology & clinical pathology provider in Bethesda, Maryland, licensed in Ohio (35.067592) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1659342194

Entity TypeIndividualFemale

Primary Taxonomy207ZP0102X

Provider Legal NameBARBARA ELEONORE CHRISTIANA KNOLLMANN-RITSCHELCredential: MD

Location Address8901 WISCONSIN AVE, PATHOLOGY DEPARTMENT, 3RD FLOORBethesda, MD 20889-0001

Mailing Address6406 Broad StBethesda, MD 20816-2608 · (301) 229-3460

Phone(301) 295-2520

Sole ProprietorNo

Enumeration DateFebruary 1, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1659342194 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in OH · 35.067592

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

8901 WISCONSIN AVE, Bethesda, MD 20889

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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.

DR. TAMMERA NELSON

Pharmacist

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4497

DAWOOD TAFTI M.D.

Radiology (Diagnostic Radiology)

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 319-8373

DR. ASHLEY BEE BOZZAY

Student in an Organized Health Care Education/Training Program

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-8588

DR. ADAM JOSEPH MAIER DO

Internal Medicine (Infectious Disease)

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4000

OANA MARIA POVIAN STROIE MD

General Practice

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4000

SIMAL RUHISHTA ALI DO

General Practice

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4900

DR. JACOB L FRIESEN M.D.

Psychiatry & Neurology (Psychiatry)

8901 WISCONSIN AVE, WRNMMC, NICOE, BUILDING 51
BETHESDA, MD 20889

Montgomery County (301) 319-3772

MS. CARLA PATRICE ALEXIS P.T.

Physical Therapist

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4880

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 Barbara Knollmann-ritschel's NPI number?

The NPI number for Barbara Knollmann-ritschel is 1659342194. It was assigned to this individual provider in the NPPES registry on February 1, 2006.

Where is Barbara Knollmann-ritschel located?

Barbara Knollmann-ritschel practices at 8901 Wisconsin Ave Pathology Department, 3rd Floor, Bethesda, MD 20889. The listed phone number is (301) 295-2520.

What is Barbara Knollmann-ritschel's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

When was this NPI record last updated?

The NPPES record for Barbara Knollmann-ritschel 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 29 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.