GREGORY ALAN LENHEIM (CRNA) – Certified Registered Nurse Anesthetist, NPI 1639131410
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,281 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in TX
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Provider Addresses for GREGORY ALAN LENHEIM (CRNA)
Band Box Place, Dallas, Dallas County, Texas, 75244, United States
DALLAS, TX 752845347
Phone: (214) 645-0624
Fax: (214) 645-0078
Type: Mailing
University of Texas Southwestern Medical Center, 5323, Harry Hines Boulevard, Dallas, TX, Dallas, Dallas County, Texas, 75390, United States
DALLAS, TX 753907208
Phone: (214) 645-0624
Fax: (214) 645-0078
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: 2005-04-04
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 |
|---|---|---|---|---|
| I20050404000715 | I | Certified Registered Nurse Anesthetist (Crna) | TX | 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 |
|---|---|---|---|---|
| 01938 | Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance | 52 | 47 | $0 |
| 01940 | Anesthesia for nerve destruction procedures on spine or spinal cord of lower back accessed through skin using imaging guidance | 45 | 34 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 15 | 15 | $0 |
| 01937 | Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of neck or upper back accessed through skin using imaging guidance | 14 | 12 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 13 | 13 | $0 |
Insurance plans in this area (ZIP 75284)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery, Colorectal Surgery (Proctology) | TX | |
| P A T H O L O G Y | TX | |
| Colorectal Surgery (Proctology), General Surgery | TX | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Colorectal Surgery (Proctology) | TX | |
| General Surgery, Colorectal Surgery (Proctology) | TX | |
| P A T H O L O G Y | TX | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Certified Registered Nurse Anesthetist (Crna) | CT |
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