JOHN RYAN BARRETT MD
NPI 1578908307
Emergency Medicine in Baltimore, MD
About John Ryan Barrett Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN RYAN BARRETT MD (NPI 1578908307) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Pennsylvania (MT203819) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
John Ryan Barrett Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Barrett reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Augusta, GA 30912
- Reassigned Medicare billing, Georgia enrollment
- 114 clinicians in this Medicare group
Roswell, GA 30076
- Reassigned Medicare billing, Georgia enrollment
- 3,885 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 4
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 21237 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 21237
BALTIMORE, MD 21237
BALTIMORE, MD 21237
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 John Barrett's NPI number?
The NPI number for John Barrett is 1578908307. It was assigned to this individual provider in the NPPES registry on May 7, 2013.
Where is John Barrett located?
John Barrett practices at 9000 Franklin Square Dr, Baltimore, MD 21237. The listed phone number is (443) 777-7046.
What is John Barrett's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Barrett enrolled in Medicare?
Yes. John Barrett is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Barrett's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Barrett reassigns Medicare benefits to 2 organizations: Au Medical Associates Emergency Medicine Billing Services, LLC (Augusta, GA) and Wellstar Medical Group, LLC (Roswell, GA). 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 John Barrett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Barrett accept?
Health plans from Oscar Health and Oscar Insurance Company list John Barrett 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 John Barrett was last updated on March 1, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# John Ryan Barrett, MD · NPI 1578908307
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 7, 2013.
## Identity
- **NPI:** 1578908307 (Entity type: Individual)
- **Enumerated:** May 7, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MT203819 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 9000 FRANKLIN SQUARE DR, Baltimore, MD 21237-3901
- **Phone:** (443) 777-7046
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Au Medical Associates Emergency Medicine Billing Services, LLC (NPI 1982089777, Augusta, GA); Wellstar Medical Group, LLC (NPI 1922405729, Roswell, GA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 1, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1578908307) · Data from the CMS NPPES public registry.