DR. SONYA NAGANATHAN MD, MPH
NPI 1528440476
Emergency Medicine in Baltimore, MD
About Dr. Sonya Naganathan Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SONYA NAGANATHAN MD, MPH (NPI 1528440476) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0105083) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of University Of Toledo College Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Sonya Naganathan Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Sonya Naganathan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21224
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, District of Columbia enrollment
- 34 clinicians in this Medicare group
Tyler, TX 75701
- Reassigned Medicare billing, Texas enrollment
- 5,299 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 Howard County Medical Center
Acute Care Hospitals · Columbia, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
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 Sonya Naganathan's NPI number?
The NPI number for Sonya Naganathan is 1528440476. It was assigned to this individual provider in the NPPES registry on June 26, 2015.
Where is Sonya Naganathan located?
Sonya Naganathan practices at 4940 Eastern Ave, Baltimore, MD 21224. The listed phone number is (410) 955-5000.
What is Sonya Naganathan's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Sonya Naganathan enrolled in Medicare?
Yes. Sonya Naganathan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Sonya Naganathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonya Naganathan reassigns Medicare benefits to 3 organizations: Johns Hopkins University (Baltimore, MD), Johns Hopkins University (Baltimore, MD) and The University Of Texas Southwestern Medical Center At Dallas (Tyler, TX). Each 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 Sonya Naganathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Sonya Naganathan affiliated with any hospitals?
According to CMS data, Sonya Naganathan is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Howard County Medical Center.
When was this NPI record last updated?
The NPPES record for Sonya Naganathan was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Sonya Naganathan, MD, MPH · NPI 1528440476
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 26, 2015.
## Identity
- **NPI:** 1528440476 (Entity type: Individual)
- **Enumerated:** June 26, 2015
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0105083 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4940 EASTERN AVE, Baltimore, MD 21224-2735
- **Phone:** (410) 955-5000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1275515546, Baltimore, MD); Johns Hopkins University (NPI 1386631810, Baltimore, MD); The University Of Texas Southwestern Medical Center At Dallas (NPI 1417099599, Tyler, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2015
## Record status
- **NPPES last updated:** October 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1528440476) · Data from the CMS NPPES public registry.