DR. UNNAM NASIR M.D.
NPI 1053774695
Family Medicine in Harlingen, TX
About Dr. Unnam Nasir M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. UNNAM NASIR M.D. (NPI 1053774695) is an individual family medicine provider in Harlingen, Texas, licensed in Texas (S3428) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical Branch At Galveston (2016).
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
Dr. Unnam Nasir M.d. 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
10Medicare enrollment records show Unnam Nasir reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Harlingen, TX 78550
- Reassigned Medicare billing, Texas enrollment
- 15 clinicians in this Medicare group
Harlingen, TX 78550
- Reassigned Medicare billing, Texas enrollment
- 47 clinicians in this Medicare group
Alamo, TX 78516
- Reassigned Medicare billing, Texas enrollment
- 145 clinicians in this Medicare group
Edinburg, TX 78541
- Reassigned Medicare billing, Texas enrollment
- 154 clinicians in this Medicare group
Edinburg, TX 78539
- Reassigned Medicare billing, Texas enrollment
- 257 clinicians in this Medicare group
Edinburg, TX 78539
- Reassigned Medicare billing, Texas enrollment
- 59 clinicians in this Medicare group
Edinburg, TX 78539
- Reassigned Medicare billing, Texas enrollment
- 136 clinicians in this Medicare group
Mcallen, TX 78503
- Reassigned Medicare billing, Texas enrollment
- 170 clinicians in this Medicare group
Mcallen, TX 78504
- Reassigned Medicare billing, Texas enrollment
- 150 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 1,452 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 3
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 78550 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Unnam Nasir's NPI number?
The NPI number for Unnam Nasir is 1053774695. It was assigned to this individual provider in the NPPES registry on March 31, 2016.
Where is Unnam Nasir located?
Unnam Nasir practices at 222 E Van Buren Ave Ste 506, Harlingen, TX 78550. The listed phone number is (956) 242-4452.
What is Unnam Nasir's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Unnam Nasir enrolled in Medicare?
Yes. Unnam Nasir 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 Unnam Nasir's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Unnam Nasir reassigns Medicare benefits to 10 organizations: Alliance Care Clinics LLC (Harlingen, TX), Emergency Physicians Of South Texas PLLC (Harlingen, TX), Canyon Springs Emergency Medicine Associates, PA (Alamo, TX), Municipal Emergency Medicine Associates, PA (Edinburg, TX), Edinburg Emergency Medicine Associates PA (Edinburg, TX) and 5 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 Unnam Nasir's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Unnam Nasir accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Oscar Insurance Company and UnitedHealthcare list Unnam Nasir 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 Unnam Nasir was last updated on November 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Dr. Unnam Nasir, M.D. · NPI 1053774695
Family Medicine physician in Harlingen, Texas. Individual provider, active in the CMS NPPES registry since March 31, 2016.
## Identity
- **NPI:** 1053774695 (Entity type: Individual)
- **Enumerated:** March 31, 2016
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** S3428 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 222 E VAN BUREN AVE STE 506, Harlingen, TX 78550-6823
- **Phone:** (956) 242-4452
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): Alliance Care Clinics LLC (NPI 1659197663, Harlingen, TX); Emergency Physicians Of South Texas PLLC (NPI 1477310779, Harlingen, TX); Canyon Springs Emergency Medicine Associates, PA (NPI 1154825412, Alamo, TX); Municipal Emergency Medicine Associates, PA (NPI 1396250650, Edinburg, TX); Edinburg Emergency Medicine Associates PA (NPI 1942467113, Edinburg, TX); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2016
## Record status
- **NPPES last updated:** November 25, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1053774695) · Data from the CMS NPPES public registry.