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

DR. PATRICIA ANN LISZEWSKI M.D.
NPI 1417911413
Pediatrics in Ellicott City, MD

Q: What is Patricia Liszewski's NPI number?

The NPI number for Patricia Liszewski is 1417911413. It was assigned to this individual provider in the NPPES registry on April 14, 2006.

Q: What is Patricia Liszewski's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Active since April 14, 2006

9501 OLD ANNAPOLIS RD, SUITE 101, ELLICOTT CITY, MD 21042(410) 992-9339(410) 964-5150 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Patricia Ann Liszewski M.d. NPPES

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

DR. PATRICIA ANN LISZEWSKI M.D. (NPI 1417911413) is an individual pediatrics provider in Ellicott City, Maryland, licensed in Maryland (D0054394) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1417911413

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. PATRICIA ANN LISZEWSKICredential: M.D.

Location Address9501 OLD ANNAPOLIS RD, SUITE 101Ellicott City, MD 21042-6314

Mailing Address17713 Globe Theatre DrOlney, MD 20832-1676 · (301) 570-6979

Phone(410) 992-9339

Fax(410) 964-5150

Sole ProprietorNo

Enumeration DateApril 14, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1417911413 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MD · D0054394

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

9501 OLD ANNAPOLIS RD, Ellicott City, MD 21042

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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.

KRISTEN ANN RODEN-HICKS PTA, LATC,

Physical Therapy Assistant

9501 OLD ANNAPOLIS RD, 125
ELLICOTT CITY, MD 21042

Howard County (410) 997-1063

KIERSTEN CROWLEY

Student in an Organized Health Care Education/Training Program

9501 OLD ANNAPOLIS RD
ELLICOTT CITY, MD 21042

Howard County (410) 997-1063

LINDSAY W JONES MD

Pediatrics (Sports Medicine)

9501 OLD ANNAPOLIS RD, SUITE 220
ELLICOTT CITY, MD 21042

Howard County (410) 772-2000

DR. MONIQUE A HUSBANDS-ONYEUKWU M.D.

Family Medicine

9501 OLD ANNAPOLIS RD
ELLICOTT CITY, MD 21042

Howard County (301) 621-6570

WOMEN'S WELLNESS MD, LLC

Obstetrics & Gynecology

9501 OLD ANNAPOLIS RD, SUITE 305
ELLICOTT CITY, MD 21042

Howard County (800) 937-4616

DR. CAROLE A. PARNES M.D.

Pediatrics

9501 OLD ANNAPOLIS RD, SUITE 101
ELLICOTT CITY, MD 21042

Howard County (410) 992-9339

DR. SUSAN C. LEE M.D.

Pediatrics

9501 OLD ANNAPOLIS RD, SUITE 101
ELLICOTT CITY, MD 21042

Howard County (410) 992-9339

DR. MICHAEL J O'CONNELL PH.D.

Psychologist (Clinical)

9501 OLD ANNAPOLIS RD, 125
ELLICOTT CITY, MD 21042

Howard County (410) 997-1063

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 Patricia Liszewski's NPI number?

The NPI number for Patricia Liszewski is 1417911413. It was assigned to this individual provider in the NPPES registry on April 14, 2006.

Where is Patricia Liszewski located?

Patricia Liszewski practices at 9501 Old Annapolis Rd Suite 101, Ellicott City, MD 21042. The listed phone number is (410) 992-9339.

What is Patricia Liszewski's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Patricia Liszewski 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 37 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.