ZENN TIMMER (LMSW) – Clinical Social Worker, NPI 1407312739
Clinical Social Worker
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,821 CLINICAL SOCIAL WORKER in MI
Provider Addresses for ZENN TIMMER (LMSW)
520 COBB ST
CADILLAC, MI 496012588
Phone: (231) 876-6527
Fax: (231) 876-6519
Type: Mailing
331 E STATE RD RM N8
GRANT, MI 493278504
Phone: (318) 342-3762
Fax: (231) 834-5186
Type: Location
376, East Apple Avenue, Muskegon, Muskegon County, Michigan, 49442, United States
MUSKEGON, MI 494423466
Phone: (231) 724-1346
Fax: (231) 724-6066
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
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: 2021-03-02
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 |
|---|---|---|---|---|
| I20210302000520 | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 49601)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Clinical Social Worker | MI | |
| Clinical Social Worker | MI | |
| Mental Health Counselor | MI | |
| Clinical Social Worker | MI | |
| Clinical Social Worker | MI | |
| Clinical Psychologist | OH | |
| Mental Health Counselor | MI | |
| Mental Health Counselor | MI | |
| Mental Health Counselor | MI | |
| Mental Health Counselor | MI |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.