GREGORY ALAN LENHEIM CRNA
NPI 1639131410
Nurse Anesthetist, Certified Registered in Dallas, TX
About Gregory Alan Lenheim Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY ALAN LENHEIM CRNA (NPI 1639131410) is an individual nurse anesthetist, certified registered in Dallas, Texas, licensed in Texas (572600) and active in the NPI registry since April 2006. He is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gregory Alan Lenheim Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
15Medicare enrollment records show Gregory Lenheim reassigns Medicare billing to 15 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dallas, TX 75219
- Reassigned Medicare billing, Texas enrollment
- 495 clinicians in this Medicare group
Dallas, TX 75206
- Reassigned Medicare billing, Texas enrollment
- 61 clinicians in this Medicare group
Dallas, TX 75231
- Reassigned Medicare billing, Texas enrollment
- 12 clinicians in this Medicare group
Dallas, TX 75230
- Reassigned Medicare billing, Texas enrollment
- 42 clinicians in this Medicare group
Dallas, TX 75243
- Reassigned Medicare billing, Texas enrollment
- 19 clinicians in this Medicare group
Addison, TX 75001
- Reassigned Medicare billing, Texas enrollment
- 11 clinicians in this Medicare group
Mesquite, TX 75150
- Reassigned Medicare billing, Texas enrollment
- 43 clinicians in this Medicare group
Richardson, TX 75080
- Reassigned Medicare billing, Texas enrollment
- 19 clinicians in this Medicare group
Plano, TX 75093
- Reassigned Medicare billing, Texas enrollment
- 15 clinicians in this Medicare group
Arlington, TX 76015
- Reassigned Medicare billing, Texas enrollment
- 64 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75390 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DALLAS, TX 75390
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gregory Lenheim's NPI number?
The NPI number for Gregory Lenheim is 1639131410. It was assigned to this individual provider in the NPPES registry on April 5, 2006.
Where is Gregory Lenheim located?
Gregory Lenheim practices at 5323 Harry Hines Blvd, Dallas, TX 75390. The listed phone number is (214) 645-0624.
What is Gregory Lenheim's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Gregory Lenheim enrolled in Medicare?
Yes. Gregory Lenheim is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gregory Lenheim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Lenheim reassigns Medicare benefits to 15 organizations: Independent Physicians Network PLLC (Dallas, TX), Arcadia Anesthesia PA (Dallas, TX), Foremost Anesthesia (Dallas, TX), Clear Skies Anesthesia PLLC (Dallas, TX), Mohammed U Shaikh MD PA (Dallas, TX) and 10 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Lenheim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Lenheim accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare and UnitedHealthcare list Gregory Lenheim as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gregory Lenheim was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Gregory Alan Lenheim, CRNA · NPI 1639131410
Nurse Anesthetist, Certified Registered physician in Dallas, Texas. Individual provider, active in the CMS NPPES registry since April 5, 2006.
## Identity
- **NPI:** 1639131410 (Entity type: Individual)
- **Enumerated:** April 5, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 572600 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 5323 HARRY HINES BLVD, Dallas, TX 75390-7208
- **Phone:** (214) 645-0624 · **Fax:** (214) 645-0078
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 15 organizations under Medicare reassignment (form CMS-855R): Independent Physicians Network PLLC (NPI 1396274676, Dallas, TX); Arcadia Anesthesia PA (NPI 1568800266, Dallas, TX); Foremost Anesthesia (NPI 1376726240, Dallas, TX); Clear Skies Anesthesia PLLC (NPI 1548935836, Dallas, TX); Mohammed U Shaikh MD PA (NPI 1073089124, Dallas, TX); and 10 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1639131410) · Data from the CMS NPPES public registry.