DR. ASA MATTHEW MARGOLIS DO, MPH, MS
NPI 1184949950
Emergency Medicine in Baltimore, MD
About Dr. Asa Matthew Margolis Do, Mph, Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ASA MATTHEW MARGOLIS DO, MPH, MS (NPI 1184949950) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (207P00000X) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and maintains a secondary practice location in Baltimore.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Asa Matthew Margolis Do, Mph, Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Asa Margolis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21287 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.
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 Asa Margolis's NPI number?
The NPI number for Asa Margolis is 1184949950. It was assigned to this individual provider in the NPPES registry on April 5, 2010.
Where is Asa Margolis located?
Asa Margolis practices at Emergency Medicine Jhmi 1830 E Monument St Suite 6-100, Baltimore, MD 21287. The listed phone number is (410) 955-3380.
What is Asa Margolis's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Asa Margolis enrolled in Medicare?
Yes. Asa Margolis is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Asa Margolis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Asa Margolis reassigns Medicare benefits to Johns Hopkins University (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 Asa Margolis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Asa Margolis affiliated with any hospitals?
According to CMS data, Asa Margolis is affiliated with Johns Hopkins Hospital, The.
When was this NPI record last updated?
The NPPES record for Asa Margolis was last updated on June 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Asa Matthew Margolis, DO, MPH, MS · NPI 1184949950
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 5, 2010.
## Identity
- **NPI:** 1184949950 (Entity type: Individual)
- **Enumerated:** April 5, 2010
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 207P00000X (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** EMERGENCY MEDICINE JHMI 1830 E MONUMENT ST, SUITE 6-100, Baltimore, MD 21287-0001
- **Phone:** (410) 955-3380
## 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:** Johns Hopkins University (NPI 1023018413, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 2010
## Record status
- **NPPES last updated:** June 11, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1184949950) · Data from the CMS NPPES public registry.