MONICA JEANETTE DIAZ
NPI 1326997669
Nurse Practitioner - Family in Round Rock, TX
About Monica Jeanette Diaz NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONICA JEANETTE DIAZ (NPI 1326997669) is an individual family provider in Round Rock, Texas, licensed in Texas (1146035) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2023).
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
Monica Jeanette Diaz 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 Reassignment
Medicare enrollment records show Monica Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Round Rock, TX 78664
- Reassigned Medicare billing, Texas enrollment
- 100 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78664 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROUND ROCK, TX 78664
ROUND ROCK, TX 78664
ROUND ROCK, TX 78664
ROUND ROCK, TX 78664
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 Monica Diaz's NPI number?
The NPI number for Monica Diaz is 1326997669. It was assigned to this individual provider in the NPPES registry on January 28, 2026.
Where is Monica Diaz located?
Monica Diaz practices at 2000 S Mays St Ste 201, Round Rock, TX 78664. The listed phone number is (512) 244-4272.
What is Monica Diaz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Monica Diaz enrolled in Medicare?
Yes. Monica Diaz 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 organization bills Medicare for Monica Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Monica Diaz reassigns Medicare benefits to Mark Malone MD PA (Round Rock, TX). The 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 Monica Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Monica Diaz accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Monica Diaz 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 Monica Diaz was last updated on January 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Monica Jeanette Diaz · NPI 1326997669
Family physician in Round Rock, Texas. Individual provider, active in the CMS NPPES registry since January 28, 2026.
## Identity
- **NPI:** 1326997669 (Entity type: Individual)
- **Enumerated:** January 28, 2026
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 1146035 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 2000 S MAYS ST STE 201, Round Rock, TX 78664-7580
- **Phone:** (512) 244-4272
## 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:** Mark Malone MD PA (NPI 1407057250, Round Rock, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** January 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1326997669) · Data from the CMS NPPES public registry.