ALITHEA DOLORES GABRELLAS MD
NPI 1568780641
Internal Medicine - Infectious Disease in Fort Defiance, AZ
About Alithea Dolores Gabrellas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALITHEA DOLORES GABRELLAS MD (NPI 1568780641) is an individual infectious disease provider in Fort Defiance, Arizona, licensed in New Mexico (MD2020-0290) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2010).
NPPES Registry Identity
Specialties & Licenses
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
Alithea Dolores Gabrellas 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
2Medicare enrollment records show Alithea Gabrellas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fort Defiance, AZ 86504
- Reassigned Medicare billing, Texas enrollment
- 518 clinicians in this Medicare group
Tohatchi, NM 87325
- Reassigned Medicare billing, Texas enrollment
- 618 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
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 86504 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.
FORT DEFIANCE, AZ 86504
FORT DEFIANCE, AZ 86504
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 Alithea Gabrellas's NPI number?
The NPI number for Alithea Gabrellas is 1568780641. It was assigned to this individual provider in the NPPES registry on May 13, 2010.
Where is Alithea Gabrellas located?
Alithea Gabrellas practices at Corner Of Route N12 And N7, Fort Defiance, AZ 86504. The listed phone number is (928) 729-8000.
What is Alithea Gabrellas's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Alithea Gabrellas enrolled in Medicare?
Yes. Alithea Gabrellas 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 Alithea Gabrellas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alithea Gabrellas reassigns Medicare benefits to 2 organizations: The Fort Defiance Indian Hospital Board, Incorporation (Fort Defiance, AZ) and Dhhs, Phs, Naihs, Gallup Indian Medical Center (Tohatchi, NM). 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 Alithea Gabrellas'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 Alithea Gabrellas was last updated on November 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Alithea Dolores Gabrellas, MD · NPI 1568780641
Infectious Disease physician in Fort Defiance, Arizona. Individual provider, active in the CMS NPPES registry since May 13, 2010.
## Identity
- **NPI:** 1568780641 (Entity type: Individual)
- **Enumerated:** May 13, 2010
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** MD2020-0290 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** CORNER OF ROUTE N12 AND N7, Fort Defiance, AZ 86504
- **Phone:** (928) 729-8000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): The Fort Defiance Indian Hospital Board, Incorporation (NPI 1477876639, Fort Defiance, AZ); Dhhs, Phs, Naihs, Gallup Indian Medical Center (NPI 1902875594, Tohatchi, NM) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Jefferson Medical College Of Thomas Jefferson University, class of 2010
## Record status
- **NPPES last updated:** November 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1568780641) · Data from the CMS NPPES public registry.