NICHOLAS NIAZI MD
NPI 1144688862
Internal Medicine - Nephrology in Baltimore, MD
About Nicholas Niazi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NICHOLAS NIAZI MD (NPI 1144688862) is an individual nephrology provider in Baltimore, Maryland, licensed in Maryland (D0103502) and active in the NPI registry since February 2016. He is enrolled in Medicare PECOS, is affiliated with Sinai Hospital Of Baltimore, and is a graduate of Georgetown University School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Nicholas Niazi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Nicholas Niazi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rockville, MD 20854
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Washington Nephrology Associates LLP
- 16 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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sinai Hospital Of Baltimore
Acute Care Hospitals · Baltimore, MDMedstar Union Memorial Hospital
Acute Care Hospitals · Baltimore, MDMedstar Good Samaritan Hospital
Acute Care Hospitals · Baltimore, MDLevindale Hebrew Geriatric Center And Hospital
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21218 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21218
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 Nicholas Niazi's NPI number?
The NPI number for Nicholas Niazi is 1144688862. It was assigned to this individual provider in the NPPES registry on February 9, 2016.
Where is Nicholas Niazi located?
Nicholas Niazi practices at 200 E 33rd St Ste 523, Baltimore, MD 21218. The listed phone number is (410) 235-9382.
What is Nicholas Niazi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Nicholas Niazi enrolled in Medicare?
Yes. Nicholas Niazi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Nicholas Niazi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Niazi reassigns Medicare benefits to Washington Nephrology Associates, L.L.P. (Rockville, 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 Nicholas Niazi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nicholas Niazi affiliated with any hospitals?
According to CMS data, Nicholas Niazi is affiliated with Sinai Hospital Of Baltimore, Medstar Union Memorial Hospital, Medstar Good Samaritan Hospital and Levindale Hebrew Geriatric Center And Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Niazi was last updated on November 13, 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.
# Nicholas Niazi, MD · NPI 1144688862
Nephrology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since February 9, 2016.
## Identity
- **NPI:** 1144688862 (Entity type: Individual)
- **Enumerated:** February 9, 2016
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** D0103502 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 E 33RD ST STE 523, Baltimore, MD 21218-3380
- **Phone:** (410) 235-9382 · **Fax:** (410) 235-9803
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Washington Nephrology Associates, L.L.P. (NPI 1124193479, Rockville, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** November 13, 2025
- **Other identifiers:** Medicaid 0370180 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1144688862) · Data from the CMS NPPES public registry.