DR. ROBERT J LOTSTEIN (M.D.) – Emergency Medicine Physician, NPI 1851337554
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
328 FAMILY PRACTICE in WY
Provider Addresses for DR. ROBERT J LOTSTEIN (M.D.)
Emergency Department
400 S 15th St
Worland, WY 82401
Phone: (307) 347-3221
Type: Location
EMERGENCY DEPARTMENT
2600 WILSON ST
MILES CITY, MT 59301
Phone: (406) 233-2600
Type: Mailing
332, 5th Street, Lewiston, Nez Perce County, Idaho, 83501, United States
LEWISTON, ID 835012419
Phone: (208) 743-7955
Fax: (208) 743-7957
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.
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: 2013-10-31
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20070718000392 | I | Emergency Medicine | WA | TBD |
| I20100514000334 | I | Family Practice | MT | TBD |
| I20100820000568 | I | Emergency Medicine | WY | TBD |
| I20131031001695 | I | Emergency Medicine | ND | 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 82401)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | IN | |
| Certified Registered Nurse Anesthetist (Crna) | WA | |
| - | WA | |
| Nurse Practitioner | MT | |
| Radiation Oncology | OH | |
| General Surgery | CT | |
| Emergency Medicine | MT | |
| - | NC | |
| Family Practice | MT | |
| Emergency Medicine, Family Practice | CO |
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