JUSTIN JOHNSON
NPI 1841604501
Emergency Medicine in Baltimore, MD
About Justin Johnson NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JUSTIN JOHNSON (NPI 1841604501) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0084902) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and maintains a secondary practice location in Philadelphia.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Justin Johnson is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
17Medicare enrollment records show Justin Johnson reassigns Medicare billing to 17 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 234 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, Maryland enrollment
- 423 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, Maryland enrollment
- 257 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, Maryland enrollment
- 66 clinicians in this Medicare group
Randallstown, MD 21133
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
- 729 clinicians in this Medicare group
Bel Air, MD 21014
- Reassigned Medicare billing, Maryland enrollment
- 130 clinicians in this Medicare group
Chestertown, MD 21620
- Reassigned Medicare billing, Maryland enrollment
- 172 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, Maryland enrollment
- 300 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 251 clinicians in this Medicare group
Dover, DE 19901
- Reassigned Medicare billing, Delaware enrollment
- 142 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21225 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
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 Justin Johnson's NPI number?
The NPI number for Justin Johnson is 1841604501. It was assigned to this individual provider in the NPPES registry on June 19, 2014.
Where is Justin Johnson located?
Justin Johnson practices at 3001 S Hanover St, Baltimore, MD 21225. The listed phone number is (410) 350-3200.
What is Justin Johnson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Justin Johnson enrolled in Medicare?
Yes. Justin Johnson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Justin Johnson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Johnson reassigns Medicare benefits to 17 organizations: University Of Maryland Emergency Medicine Associates, PA (Baltimore, MD), St Paul Place Specialists, Inc. (Baltimore, MD), Maryland Family Care, Inc. (Baltimore, MD), Emergency Physicians Spps (Baltimore, MD), Emergency Medicine Associates PA PC (Randallstown, MD) and 12 more organizations, listed in the Medicare section above. 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 Justin Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Justin Johnson accept?
Health plans from CareSource and Oscar Insurance Company list Justin Johnson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Justin Johnson was last updated on April 29, 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.
# Justin Johnson · NPI 1841604501
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 19, 2014.
## Identity
- **NPI:** 1841604501 (Entity type: Individual)
- **Enumerated:** June 19, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0084902 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3001 S HANOVER ST, Baltimore, MD 21225-1233
- **Phone:** (410) 350-3200
## 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:** 17 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Emergency Medicine Associates, PA (NPI 1790639086, Baltimore, MD); St Paul Place Specialists, Inc. (NPI 1174564736, Baltimore, MD); Maryland Family Care, Inc. (NPI 1598718256, Baltimore, MD); Emergency Physicians Spps (NPI 1760885958, Baltimore, MD); Emergency Medicine Associates PA PC (NPI 1043175375, Randallstown, MD); and 12 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 29, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1841604501) · Data from the CMS NPPES public registry.