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RONG ZHANG M.D., PH.D. LLC
NPI 1891904926
Clinic/Center - Multi-Specialty in Baltimore, MD

Active since May 22, 2007
3333 N CALVERT ST STE 660, BALTIMORE, MD 21218(410) 261-8558(410) 261-8744 Get Directions Write a Review

NPPES record last updated: October 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 11, 2025, Oct 13, 2023 (2 updates tracked since 2023).

About Rong Zhang M.d., Ph.d. Llc NPPES

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

RONG ZHANG M.D., PH.D. LLC (NPI 1891904926) is a healthcare organization registered as a multi-specialty in Baltimore, Maryland and active in the NPI registry since May 2007. The organization lists Rong Zhang, Owner, as its authorized official.

NPPES Registry Identity

NPI1891904926
Entity TypeOrganization
Primary Taxonomy261QM1300X
Legal Business NameRONG ZHANG M.D., PH.D. LLC
Location Address3333 N CALVERT ST STE 660Baltimore, MD 21218-6519
Mailing Address3333 N Calvert St Ste 660Baltimore, MD 21218-6519 · (410) 261-8558 · Fax (410) 261-8744
Phone(410) 261-8558
Fax(410) 261-8744
Organization SubpartNo
Authorized OfficialRong ZhangOwner · (410) 261-8558
Enumeration DateMay 22, 2007
Last NPPES UpdateOctober 11, 20252 updates tracked since enumeration
NPPES CertifiedOctober 11, 2025
✔ NPI 1891904926 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Multi-SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM1300X
License✔ Licensed in MD · D055059
3333 N CALVERT ST STE 660, Baltimore, MD 21218
Open in Google Maps ↗

Other Identifiers 1

Medicaid406053900MD

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rong Zhang M.d., Ph.d. Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Rong Zhang M.D., Ph.D. LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Rong Zhang, M.D.
Internal Medicine
NPI 1669421855
3333 N CALVERT ST STE 660
Baltimore, MD 21218
(410) 261-8558
✔ PECOS✔ Accepts MedicareSame address

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 Rong Zhang M.D., Ph.D. LLC's NPI number?

The NPI number for Rong Zhang M.D., Ph.D. LLC is 1891904926. It was assigned to this organization in the NPPES registry on May 22, 2007.

Where is Rong Zhang M.D., Ph.D. LLC located?

Rong Zhang M.D., Ph.D. LLC is located at 3333 N Calvert St Ste 660, Baltimore, MD 21218. The listed phone number is (410) 261-8558.

What is Rong Zhang M.D., Ph.D. LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.

Is Rong Zhang M.D., Ph.D. LLC enrolled in Medicare?

Yes. Rong Zhang M.D., Ph.D. LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rong Zhang M.D., Ph.D. LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Rong Zhang M.D., Ph.D. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Rong Zhang M.D., Ph.D. LLC was last updated on October 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.