JOHN IRWIN JR.
NPI 1710949219
Pediatrics in Baltimore, MD
About John Irwin Jr. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN IRWIN JR. (NPI 1710949219) is an individual pediatrics provider in Baltimore, Maryland, licensed in Maryland (D0056211) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.
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)
John Irwin Jr. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Irwin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 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.
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.
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 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 John Irwin's NPI number?
The NPI number for John Irwin is 1710949219. It was assigned to this individual provider in the NPPES registry on April 3, 2006.
Where is John Irwin located?
John Irwin practices at 3001 S Hanover St Suite 211, Baltimore, MD 21225. The listed phone number is (410) 350-2173.
What is John Irwin's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is John Irwin enrolled in Medicare?
Yes. John Irwin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Irwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Irwin reassigns Medicare benefits to Medstar Medical Group II LLC (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 John Irwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Irwin was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# John Irwin Jr. · NPI 1710949219
Pediatrics physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 3, 2006.
## Identity
- **NPI:** 1710949219 (Entity type: Individual)
- **Enumerated:** April 3, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** D0056211 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3001 S HANOVER ST, SUITE 211, Baltimore, MD 21225-1233
- **Phone:** (410) 350-2173
## 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:** Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1710949219) · Data from the CMS NPPES public registry.