REBECCA ANN MARKSTEINER LCSW AND LCSW-C
NPI 1902512346
Social Worker - Clinical in New Market, MD
About Rebecca Ann Marksteiner Lcsw And Lcsw-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REBECCA ANN MARKSTEINER LCSW AND LCSW-C (NPI 1902512346) is an individual clinical provider in New Market, Maryland, licensed in Maryland (32927) and active in the NPI registry since January 2023. She 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)
Rebecca Ann Marksteiner Lcsw And Lcsw-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Rebecca Marksteiner reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Market, MD 21774
- Reassigned Medicare billing, Maryland enrollment
- 12 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 21774 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW MARKET, MD 21774
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 Rebecca Marksteiner's NPI number?
The NPI number for Rebecca Marksteiner is 1902512346. It was assigned to this individual provider in the NPPES registry on January 30, 2023.
Where is Rebecca Marksteiner located?
Rebecca Marksteiner practices at 4 W Main St, New Market, MD 21774. The listed phone number is (301) 381-4586.
What is Rebecca Marksteiner's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Rebecca Marksteiner enrolled in Medicare?
Yes. Rebecca Marksteiner is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Rebecca Marksteiner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Marksteiner reassigns Medicare benefits to Green Valley Therapy, L.L.C. (New Market, 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 Rebecca Marksteiner'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 Rebecca Marksteiner was last updated on April 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Rebecca Ann Marksteiner, LCSW AND LCSW-C · NPI 1902512346
Clinical provider in New Market, Maryland. Individual provider, active in the CMS NPPES registry since January 30, 2023.
## Identity
- **NPI:** 1902512346 (Entity type: Individual)
- **Enumerated:** January 30, 2023
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 32927 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4 W MAIN ST, New Market, MD 21774-6290
- **Phone:** (301) 381-4586
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Green Valley Therapy, L.L.C. (NPI 1457069858, New Market, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1902512346) · Data from the CMS NPPES public registry.