MR. WILLIAM A GASPAR MD
NPI 1497739015
Internal Medicine in Chandler, AZ
About Mr. William A Gaspar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. WILLIAM A GASPAR MD (NPI 1497739015) is an individual internal medicine provider in Chandler, Arizona, licensed in New Mexico (96251) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Mountain View Regional Medical Center, and maintains a secondary practice location in Las Cruces.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Mr. William A Gaspar Md 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
3Medicare enrollment records show William Gaspar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Las Cruces, NM 88011
- Reassigned Medicare billing, New Mexico enrollment
- 238 clinicians in this Medicare group
Albuquerque, NM 87102
- Reassigned Medicare billing, New Mexico enrollment
- 73 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, New Mexico enrollment
- 251 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 5
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mountain View Regional Medical Center
Acute Care Hospitals · Las Cruces, NMPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85286 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 William Gaspar's NPI number?
The NPI number for William Gaspar is 1497739015. It was assigned to this individual provider in the NPPES registry on December 6, 2005.
Where is William Gaspar located?
William Gaspar practices at 1860 S Alma School Rd Ste 1, Chandler, AZ 85286. The listed phone number is (480) 361-1955.
What is William Gaspar's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Gaspar enrolled in Medicare?
Yes. William Gaspar 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 William Gaspar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Gaspar reassigns Medicare benefits to 3 organizations: Las Cruces Hb Medical Services LLC (Las Cruces, NM), Knd Development 59 LLC (Albuquerque, NM) and Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX). 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 William Gaspar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Gaspar affiliated with any hospitals?
According to CMS data, William Gaspar is affiliated with Mountain View Regional Medical Center.
When was this NPI record last updated?
The NPPES record for William Gaspar was last updated on March 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Mr. William A Gaspar, MD · NPI 1497739015
Internal Medicine physician in Chandler, Arizona. Individual provider, active in the CMS NPPES registry since December 6, 2005.
## Identity
- **NPI:** 1497739015 (Entity type: Individual)
- **Enumerated:** December 6, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 96251 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 1860 S ALMA SCHOOL RD, STE 1, Chandler, AZ 85286-7078
- **Phone:** (480) 361-1955
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Las Cruces Hb Medical Services LLC (NPI 1598446171, Las Cruces, NM); Knd Development 59 LLC (NPI 1215266754, Albuquerque, NM); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1991
## Record status
- **NPPES last updated:** March 2, 2026
- **Other identifiers:** Medicaid 000L5164 (NM)
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Source: [NPI Profile](https://npiprofile.com/npi/1497739015) · Data from the CMS NPPES public registry.