DR. STEPHEN WITANOWSKI
NPI 1366807885
Internal Medicine in Baltimore, MD
About Dr. Stephen Witanowski NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEPHEN WITANOWSKI (NPI 1366807885) is a healthcare organization registered as an internal medicine in Baltimore, Maryland and active in the NPI registry since December 2015. The organization lists Mary Wright-sisk, Director Of Physician Enterprise, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Stephen Witanowski is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
316Medicare enrollment records show 316 clinicians reassign Medicare billing to Dr. Stephen Witanowski, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 137 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 24
Nearest to this location (20)
See all 316Baltimore, MD 21209
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Lifebridge Suburban Physicians Group, LLC's NPI number?
The NPI number for Lifebridge Suburban Physicians Group, LLC is 1366807885. It was assigned to this organization in the NPPES registry on December 29, 2015. The provider is doing business as Dr. Stephen Witanowski.
Where is Lifebridge Suburban Physicians Group, LLC located?
Lifebridge Suburban Physicians Group, LLC is located at 2700 Quarry Lake Dr Suite 280, Baltimore, MD 21209. The listed phone number is (410) 469-5544.
What is Lifebridge Suburban Physicians Group, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Lifebridge Suburban Physicians Group, LLC enrolled in Medicare?
Yes. Lifebridge Suburban Physicians Group, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Lifebridge Suburban Physicians Group, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 316 clinicians in 24 Medicare specialties reassign their Medicare billing to Lifebridge Suburban Physicians Group, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (88), Internal Medicine (53) and Diagnostic Radiology (52). Of these, 7 practice at this address and 137 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Lifebridge Suburban Physicians Group, LLC was last updated on August 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Stephen Witanowski · NPI 1366807885
Internal Medicine organization in Baltimore, Maryland. Organization record, active in the CMS NPPES registry since December 29, 2015.
## Identity
- **NPI:** 1366807885 (Entity type: Organization)
- **Enumerated:** December 29, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Legal business name:** Lifebridge Suburban Physicians Group, Llc
- **Organization subpart:** Yes (part of Lifebridge Community Physicians, Llc)
- **Authorized official:** Mary Wright-Sisk, DIRECTOR OF PHYSICIAN ENTERPRISE
## Practice location
- **Address:** 2700 QUARRY LAKE DR, SUITE 280, Baltimore, MD 21209-3742
- **Phone:** (410) 469-5544 · **Fax:** (410) 585-2867
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 316 clinicians in 24 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (88), Internal Medicine (53), Diagnostic Radiology (52); 7 practice at this address and 137 within 10 miles; [full list](https://npiprofile.com/npi/1366807885/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1366807885) · Data from the CMS NPPES public registry.