JEFFREY S WARREN (MD) – Immunopathology Physician, NPI 1912089897
Immunopathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
573 PATHOLOGY in MI
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Provider Addresses for JEFFREY S WARREN (MD)
Mott Children's Hospital and Von Voigtlander Women's Hospital, 1500, East Medical Center Drive, Ann Arbor, Washtenaw County, Michigan, 48109, United States
2ND FLOOR UNIVERSITY HOSPITAL RECP PATHOLOGY
ANN ARBOR, MI 481095054
Phone: (800) 862-7284
Type: Location
South State Street, Ann Arbor, Washtenaw County, Michigan, 48108-1774, United States
ANN ARBOR, MI 481081633
Phone: (734) 647-5299
Type: Mailing
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.
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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: 2010-02-25
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 |
|---|---|---|---|---|
| I20100225000635 | I | Pathology | 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 |
|---|---|---|---|---|
| 84165 | Protein measurement, serum | 1,469 | 1,005 | $0 |
| 86334 | Immunologic analysis technique on serum (immunofixation) | 841 | 653 | $0 |
| 84166 | Protein measurement, body fluid | 329 | 257 | $0 |
| 86255 | Screening test for antibody to noninfectious agent | 146 | 135 | $0 |
| 86335 | Immunologic analysis technique on body fluid, other fluids with concentration | 115 | 114 | $0 |
Insurance plans in this area (ZIP 48109)
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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 | |
| Internal Medicine, Pediatric Medicine | IL | |
| - | MI | |
| Physician Assistant | MI |
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