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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JONI MAXWELL
NPI 1003637208
Nurse Practitioner - Primary Care in San Marcos, TX

Active since October 21, 2024PECOS EnrolledAccepts Medicare Assignment
1430 IH 35 FRONTAGE RD STE 106, SAN MARCOS, TX 78666(512) 353-6475 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 9, 2026, Dec 5, 2024, Nov 21, 2024 (3 updates tracked since 2024).

About Joni Maxwell NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JONI MAXWELL (NPI 1003637208) is an individual primary care provider in San Marcos, Texas, licensed in Texas (1178257) and active in the NPI registry since October 2024. She is enrolled in Medicare PECOS, is affiliated with Christus Santa Rosa Hospital-san Marcos, and maintains a secondary practice location in Live Oak.

NPPES Registry Identity

NPI1003637208
Entity TypeIndividualFemale
Primary Taxonomy363LP2300X
Provider Legal NameJONI MAXWELL
Location Address1430 IH 35 FRONTAGE RD STE 106San Marcos, TX 78666
Mailing Address12881 N Ih 35Live Oak, TX 78233-2966 · (210) 742-6555
Phone(512) 353-6475
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateOctober 21, 2024
Last NPPES UpdateSeptember 9, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2026
✔ NPI 1003637208 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Primary CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP2300X
License✔ Licensed in TX · 1178257
1430 IH 35 FRONTAGE RD STE 106, San Marcos, TX 78666
Open in Google Maps ↗

Secondary Practice Location 1

Location 112881 N Ih 35Live Oak, TX 78233-2966 · Phone (210) 742-6555

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Joni Maxwell 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.

PECOS PAC ID9931620457
PECOS Enrollment IDI20250312002755
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Christus Santa Rosa Hospital-San Marcos

Acute Care Hospitals · San Marcos, TX
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450272
Location1301 Wonder World DriveSan Marcos, TX 78666 · Hays County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78666 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Joni Maxwell's NPI number?

The NPI number for Joni Maxwell is 1003637208. It was assigned to this individual provider in the NPPES registry on October 21, 2024.

Where is Joni Maxwell located?

Joni Maxwell practices at 1430 Ih 35 Frontage Rd Ste 106, San Marcos, TX 78666. The listed phone number is (512) 353-6475.

What is Joni Maxwell's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.

Is Joni Maxwell enrolled in Medicare?

Yes. Joni Maxwell 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.

What insurance does Joni Maxwell accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 7 other insurers list Joni Maxwell 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.

Is Joni Maxwell affiliated with any hospitals?

According to CMS data, Joni Maxwell is affiliated with Christus Santa Rosa Hospital-San Marcos.

When was this NPI record last updated?

The NPPES record for Joni Maxwell was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days 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.