MARK OLTERMANN (MD) – Critical Care Medicine (Internal Medicine) Physician, NPI 1154353357
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for MARK OLTERMANN (MD)
1155 Mill St
Reno, NV 895021576
Phone: (775) 982-7878
Fax: (775) 982-4196
Type: Location
1617, Hemphill Street, Fort Worth, Tarrant County, Texas, 76104, United States
ATTN CREDENTIALING
FORT WORTH, TX 761044709
Phone: (817) 702-3381
Type: Mailing
John Peter Smith Hospital, 1500, South Main Street, Fort Worth, Tarrant County, Texas, 76104, United States
FORT WORTH, TX 76104
Phone: (817) 921-3431
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: 2018-06-04
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 |
|---|---|---|---|---|
| I20180604001840 | I | Critical Care (Intensivists) | GA | 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 |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 121 | 49 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 64 | 33 | $0 |
Insurance plans in this area (ZIP 89502)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CRITICAL CARE (INTENSIVISTS) | TX | 36620 | Insertion of arterial catheter for blood sampling or infusion, accessed through the skin | 15 | 15 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | GA | |
| Nurse Practitioner | NC | |
| Nurse Practitioner | GA | |
| Internal Medicine | GA | |
| Internal Medicine | GA | |
| Internal Medicine, Endocrinology | GA | |
| - | GA | |
| N E U R O L O G Y | TX | |
| - | GA | |
| E N D O C R I N O L O G Y | GA |
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