ISABEL CAROLINA DOS SANTOS MARQUES MD
NPI 1104403997
Surgery in Baltimore, MD
About Isabel Carolina Dos Santos Marques Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISABEL CAROLINA DOS SANTOS MARQUES MD (NPI 1104403997) is an individual surgery provider in Baltimore, Maryland, licensed in Maryland (D0107236) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Edinburg.
NPPES Registry Identity
Specialties & Licenses 2
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)
Isabel Carolina Dos Santos Marques Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Isabel Dos Santos Marques reassigns Medicare billing to 2 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, Maryland enrollment
- 23 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 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.
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 Isabel Dos Santos Marques's NPI number?
The NPI number for Isabel Dos Santos Marques is 1104403997. It was assigned to this individual provider in the NPPES registry on March 26, 2021.
Where is Isabel Dos Santos Marques located?
Isabel Dos Santos Marques practices at 4940 Eastern Ave, Baltimore, MD 21224. The listed phone number is (410) 933-6423.
What is Isabel Dos Santos Marques's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Isabel Dos Santos Marques enrolled in Medicare?
Yes. Isabel Dos Santos Marques is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Isabel Dos Santos Marques's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isabel Dos Santos Marques reassigns Medicare benefits to 2 organizations: Johns Hopkins University (Baltimore, MD) and Johns Hopkins University (Baltimore, MD). 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 Isabel Dos Santos Marques'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 Isabel Dos Santos Marques was last updated on July 15, 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.
# Isabel Carolina Dos Santos Marques, MD · NPI 1104403997
Surgery physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 26, 2021.
## Identity
- **NPI:** 1104403997 (Entity type: Individual)
- **Enumerated:** March 26, 2021
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** D0107236 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4940 EASTERN AVE, Baltimore, MD 21224-2735
- **Phone:** (410) 933-6423
## 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): Johns Hopkins University (NPI 1275515546, Baltimore, MD); Johns Hopkins University (NPI 1235649526, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 15, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1104403997) · Data from the CMS NPPES public registry.