MARIO FERNANDO PEREZ MD
NPI 1104891738
Internal Medicine - Pulmonary Disease in Farmington, CT
About Mario Fernando Perez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIO FERNANDO PEREZ MD (NPI 1104891738) is an individual pulmonary disease provider in Farmington, Connecticut, licensed in New Mexico (MD2024-1021) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mario Fernando Perez Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Mario Perez reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Farmington, CT 06030
- Reassigned Medicare billing, Connecticut enrollment
- 788 clinicians in this Medicare group
Middletown, CT 06457
- Reassigned Medicare billing, Connecticut enrollment
- 178 clinicians in this Medicare group
Albuquerque, NM 87106
- Reassigned Medicare billing, New Mexico enrollment
- 2,105 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 06030 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.
Referred Medical Equipment & Supplies CMS DME claims 3
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FARMINGTON, CT 06030
FARMINGTON, CT 06030
FARMINGTON, CT 06030
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 Mario Perez's NPI number?
The NPI number for Mario Perez is 1104891738. It was assigned to this individual provider in the NPPES registry on February 17, 2006.
Where is Mario Perez located?
Mario Perez practices at 263 Farmington Ave, Farmington, CT 06030. The listed phone number is (860) 679-8300.
What is Mario Perez's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Mario Perez enrolled in Medicare?
Yes. Mario Perez is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mario Perez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mario Perez reassigns Medicare benefits to 3 organizations: University Of Connecticut Health Center (Farmington, CT), Middlesex Hospital (Middletown, CT) and Unm Medical Group Inc (Albuquerque, 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 Mario Perez'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 Mario Perez was last updated on February 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Mario Fernando Perez, MD · NPI 1104891738
Pulmonary Disease physician in Farmington, Connecticut. Individual provider, active in the CMS NPPES registry since February 17, 2006.
## Identity
- **NPI:** 1104891738 (Entity type: Individual)
- **Enumerated:** February 17, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** MD2024-1021 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 263 FARMINGTON AVE, Farmington, CT 06030-2200
- **Phone:** (860) 679-8300 · **Fax:** (860) 679-8344
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): University Of Connecticut Health Center (NPI 1720083769, Farmington, CT); Middlesex Hospital (NPI 1972563138, Middletown, CT); Unm Medical Group Inc (NPI 1831218627, Albuquerque, NM) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104891738) · Data from the CMS NPPES public registry.