What is Joseph Janczewski's NPI number?

Joseph Janczewski's National Provider Identifier (NPI) is 1578457727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joseph Janczewski's specialty?

Joseph Janczewski is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).

Where is Joseph Janczewski located?

Joseph Janczewski's practice location on file with NPPES is 655 W Lombard St, Baltimore, MD 21201-1512.

What is Joseph Janczewski's phone number?

The practice phone number listed in the NPPES registry for Joseph Janczewski is (410) 706-0501.

Is Joseph Janczewski's NPI active?

Yes — Joseph Janczewski's NPI (1578457727) is active in the NPPES registry as of the last update on 2025-06-04.

IndividualActive

Joseph Janczewski

NPI 1578457727 · Registered Nurse · Baltimore, MD

Joseph Janczewski is a Registered Nurse provider in Baltimore, MD (NPI 1578457727).

Provider details

NPI number: 1578457727
Entity type: Individual
Primary specialty: Registered NurseNursing Service Providers
Sex: Male
Sole proprietor: No
License: RN741021 (PA)

Specialties & taxonomies

Registered NursePrimary163W00000XLicense R269535 (MD)
Nursing Service Providers
Registered Nurse163W00000XLicense RN741021 (PA)
Nursing Service Providers
Registered Nurse163W00000XLicense 1074648 (TX)
Nursing Service Providers

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

655 W Lombard St

Baltimore, MD 21201-1512

Phone: (410) 706-0501

Street-level locationGet directions

More MD providers

Mailing address

1607 Cantwell Rd Apt E

Baltimore, MD 21244-1408

Enumerated: 2025-06-04
Last updated: 2025-06-04
Certified: 2025-06-04

Frequently asked questions

What is Joseph Janczewski's NPI number?: Joseph Janczewski's National Provider Identifier (NPI) is 1578457727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Joseph Janczewski's specialty?: Joseph Janczewski is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
Where is Joseph Janczewski located?: Joseph Janczewski's practice location on file with NPPES is 655 W Lombard St, Baltimore, MD 21201-1512.
What is Joseph Janczewski's phone number?: The practice phone number listed in the NPPES registry for Joseph Janczewski is (410) 706-0501.
Is Joseph Janczewski's NPI active?: Yes — Joseph Janczewski's NPI (1578457727) is active in the NPPES registry as of the last update on 2025-06-04.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.