MS. MARY BAETZ MCALLEN LCSW-C
NPI 1902382138
Social Worker - Clinical in Towson, MD
About Ms. Mary Baetz Mcallen Lcsw-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY BAETZ MCALLEN LCSW-C (NPI 1902382138) is an individual clinical provider in Towson, Maryland, licensed in Maryland (09879) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Lutherville, and is a graduate of Other (1985).
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 and accepts Medicare assignment
Ms. Mary Baetz Mcallen Lcsw-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mary Mcallen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Timonium, MD 21093
- Reassigned Medicare billing, Maryland enrollment
- 116 clinicians in this Medicare group
Frederick, MD 21704
- Reassigned Medicare billing, Maryland enrollment
- 5 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
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 21204 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 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TOWSON, MD 21204
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 Mary Mcallen's NPI number?
The NPI number for Mary Mcallen is 1902382138. It was assigned to this individual provider in the NPPES registry on July 11, 2018.
Where is Mary Mcallen located?
Mary Mcallen practices at 120 Sister Pierre Dr Ste 403, Towson, MD 21204. The listed phone number is (410) 823-6408.
What is Mary Mcallen's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mary Mcallen enrolled in Medicare?
Yes. Mary Mcallen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Mcallen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mcallen reassigns Medicare benefits to 2 organizations: Psych Associates Of Maryland LLC (Timonium, MD) and True Life Change (Frederick, 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 Mary Mcallen'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 Mary Mcallen was last updated on September 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Ms. Mary Baetz Mcallen, LCSW-C · NPI 1902382138
Clinical provider in Towson, Maryland. Individual provider, active in the CMS NPPES registry since July 11, 2018.
## Identity
- **NPI:** 1902382138 (Entity type: Individual)
- **Enumerated:** July 11, 2018
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 09879 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 120 SISTER PIERRE DR STE 403, Towson, MD 21204
- **Phone:** (410) 823-6408 · **Fax:** (443) 279-0537
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Psych Associates Of Maryland LLC (NPI 1891721981, Timonium, MD); True Life Change (NPI 1285304626, Frederick, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** September 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1902382138) · Data from the CMS NPPES public registry.