MARY BRENNA MCMAHON (LMSW) – Social Worker, NPI 1558828897
Social Worker
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,821 CLINICAL SOCIAL WORKER in MI
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Provider Addresses for MARY BRENNA MCMAHON (LMSW)
2018, Devolson Avenue, Ann Arbor, Washtenaw County, Michigan, 48104, United States
ANN ARBOR, MI 481044722
Phone:
Type: Mailing
555, Towner Street, Ypsilanti, Washtenaw County, Michigan, 48198, United States
YPSILANTI, MI 481985723
Phone: (734) 391-9535
Type: Location
3621 S STATE ST
ANN ARBOR, MI 481081633
Phone: (734) 647-5299
Type: Mailing
4260 PLYMOUTH RD
ANN ARBOR, MI 481092700
Phone: (734) 764-6831
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2022-01-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20220118000838 | I | Clinical Social Worker | MI | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 90853 | Group psychotherapy | 47 | 16 | $0 |
Insurance plans in this area (ZIP 48104)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| Physical Medicine And Rehabilitation | MI | |
| A N E S T H E S I O L O G Y | MI | |
| - | MI | |
| - | MI | |
| Clinical Social Worker | MI | |
| Interventional Radiology | MI |
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