MS. HILLARY ANN GERLING (PA) – Physician Assistant, NPI 1861768905
Physician Assistant
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,853 PHYSICIAN ASSISTANT in MO
Provider Addresses for MS. HILLARY ANN GERLING (PA)
P O BOX 7412011 DEPT OF ANESTHESIOLOGY
CHICAGO, IL 606742011
Phone: (314) 273-6249
Fax: (314) 747-5157
Type: Mailing
1 BARNES JEWISH HOSPITAL PLZ DEPT OF
SAINT LOUIS, MO 631101003
Phone: (800) 862-9980
Fax: (314) 362-1185
Type: Location
6800 STATE ROUTE 162
MARYVILLE, IL 620628500
Phone:
Type: Mailing
PO BOX 7412011
CHICAGO, IL 606742011
Phone: (800) 862-9980
Fax: (314) 362-1185
Type: Mailing
1 BARNES JEWISH HOSPITAL PLZ
DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 631101003
Phone: (800) 862-9980
Fax: (314) 362-1185
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: 2025-06-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20120424000243 | I | Physician Assistant | IL | TBD |
| I20250625003980 | I | Physician Assistant | MO | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 421 | 389 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 107 | 106 | $0 |
| 99291 | Critical care, first 30-74 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 60674)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MO | |
| - | MO | |
| - | FL | |
| - | MO | |
| Diagnostic Radiology | IL | |
| - | IL | |
| - | MO | |
| - | MO | |
| - | MO | |
| - | MO |
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