MR. CHRISTOPHER JOHN DIFFERDING (PA-C) – Physician Assistant, NPI 1295002715
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,035 PHYSICIAN ASSISTANT in IL
Provider Addresses for MR. CHRISTOPHER JOHN DIFFERDING (PA-C)
600 E 1ST ST
SPRING VALLEY, IL 613621512
Phone: (815) 664-2617
Fax: (815) 664-5204
Mailing address matches the actual address.
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: 2012-01-17
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 |
|---|---|---|---|---|
| I20120117000236 | I | Physician Assistant | IL | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,476 | 949 | $0 |
| 51798 | Ultrasound measurement of bladder capacity after voiding | 1,001 | 752 | $0 |
| 81003 | Automated urinalysis test | 958 | 685 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 513 | 425 | $0 |
| J9217 | Leuprolide acetate (for depot suspension), 7.5 mg | 340 | 51 | $0 |
Insurance plans in this area (ZIP 61362)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PHYSICIAN ASSISTANT | IL | 51798 | Ultrasound measurement of bladder capacity after voiding | 1330 | 939 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | SC | |
| Nurse Practitioner | IN | |
| Nurse Practitioner | NC | |
| Family Practice | TX | |
| Nurse Practitioner | NC | |
| Nurse Practitioner | NC | |
| Family Practice | NC | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | NC |
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