CATHIE GANTNER OVERMYER (M.D.) – Internal Medicine Physician, NPI 1760437263
Internal Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
169 INTERNAL MEDICINE in WY
Provider Addresses for CATHIE GANTNER OVERMYER (M.D.)
625 E Broadway Ave
Jackson, WY 830018642
Phone: (307) 733-3636
Fax: (877) 205-2024
Type: Location
PO BOX 428
JACKSON, WY 830010428
Phone: (307) 733-3636
Fax: (877) 205-2024
Type: Mailing
Rush Oak Park Hospital, 520, South Maple Avenue, Oak Park, Cook County, Illinois, 60304, United States
3E
OAK PARK, IL 603041022
Phone: (708) 660-5900
Fax: (708) 660-2210
Type: Mailing
555 E BROADWAY AVE STE 201
JACKSON, WY 830018640
Phone: (307) 733-7222
Fax: (307) 739-4828
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: 2024-09-09
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 |
|---|---|---|---|---|
| I20101118001402 | I | Internal Medicine | IL | TBD |
| I20240909002310 | I | Internal Medicine | WY | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 364 | 316 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 251 | 251 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 203 | 151 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 161 | 126 | $0 |
| G0008 | Administration of influenza virus vaccine | 32 | 31 | $0 |
Insurance plans in this area (ZIP 83001)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | WY | |
| - | WY | |
| - | WY | |
| Physician Assistant | WY | |
| - | WY | |
| Certified Registered Nurse Anesthetist (Crna) | WY | |
| General Surgery | WY | |
| Physician Assistant | UT | |
| General Surgery | ID | |
| Qualified Audiologist | WY |
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