WENDY ZIAI M.D.
NPI 1891721189
Anesthesiology - Critical Care Medicine in Baltimore, MD
About Wendy Ziai M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WENDY ZIAI M.D. (NPI 1891721189) is an individual critical care medicine provider in Baltimore, Maryland, licensed in Maryland (D57562) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Wendy Ziai M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Wendy Ziai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDJohns Hopkins Bayview Medical Center
Acute Care Hospitals · Baltimore, MDMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
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 Wendy Ziai's NPI number?
The NPI number for Wendy Ziai is 1891721189. It was assigned to this individual provider in the NPPES registry on June 25, 2006.
Where is Wendy Ziai located?
Wendy Ziai practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (410) 955-9441.
What is Wendy Ziai's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.
Is Wendy Ziai enrolled in Medicare?
Yes. Wendy Ziai is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Wendy Ziai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wendy Ziai reassigns Medicare benefits to Johns Hopkins University (Baltimore, MD). The 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 Wendy Ziai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Wendy Ziai affiliated with any hospitals?
According to CMS data, Wendy Ziai is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.
When was this NPI record last updated?
The NPPES record for Wendy Ziai was last updated on April 22, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Wendy Ziai, M.D. · NPI 1891721189
Critical Care Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 25, 2006.
## Identity
- **NPI:** 1891721189 (Entity type: Individual)
- **Enumerated:** June 25, 2006
- **Primary specialty:** Anesthesiology - Critical Care Medicine · taxonomy 207LC0200X
- **State license:** D57562 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 N WOLFE ST, Baltimore, MD 21287-0005
- **Phone:** (410) 955-9441
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Johns Hopkins University (NPI 1023018413, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** April 22, 2014
- **Other identifiers:** Medicare UPIN H54302 (MD); Medicare PIN KR78C134 (MD); Medicaid 699402400 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1891721189) · Data from the CMS NPPES public registry.