DENNIS R. LONG M.D.
NPI 1144319062
Internal Medicine in La Quinta, CA
About Dennis R. Long M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DENNIS R. LONG M.D. (NPI 1144319062) is an individual internal medicine provider in La Quinta, California, licensed in California (G47243) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Orange.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dennis R. Long M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Dennis Long reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Quinta, CA 92253
- Reassigned Medicare billing, California enrollment
- 595 clinicians in this Medicare group
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 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 6
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 92253 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 13
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 Dennis Long's NPI number?
The NPI number for Dennis Long is 1144319062. It was assigned to this individual provider in the NPPES registry on October 11, 2006. The provider is also known as Dennis Robert Long M.D..
Where is Dennis Long located?
Dennis Long practices at 45280 Seeley Dr Fl 3, La Quinta, CA 92253. The listed phone number is (760) 610-7300.
What is Dennis Long's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Dennis Long enrolled in Medicare?
Yes. Dennis Long is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Dennis Long's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Long reassigns Medicare benefits to 2 organizations: Eisenhower Medical Center (La Quinta, CA) and Memorialcare Medical Foundation (Fountain Valley, CA). 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 Dennis Long's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Dennis Long was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.