Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

KATHY J HELZLSOUER MD
NPI 1982645875
Internal Medicine - Medical Oncology in Baltimore, MD

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.

Active since June 09, 2006

227 SAINT PAUL PL, 6TH FLOOR, BALTIMORE, MD 21202(410) 951-7950(410) 951-7931 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

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About Kathy J Helzlsouer Md NPPES

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

KATHY J HELZLSOUER MD (NPI 1982645875) is an individual medical oncology provider in Baltimore, Maryland, licensed in Maryland (D0028685) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1982645875

Entity TypeIndividualFemale

Primary Taxonomy207RX0202X

Provider Legal NameKATHY J HELZLSOUERCredential: MD

Location Address227 SAINT PAUL PL, 6TH FLOORBaltimore, MD 21202-2001

Mailing AddressPo Box 64075Baltimore, MD 21264-4075

Phone(410) 951-7950

Fax(410) 951-7931

Sole ProprietorNo

Enumeration DateJune 9, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1982645875 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in MD · D0028685

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

227 SAINT PAUL PL, Baltimore, MD 21202

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