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

STELLAMARIS WILLIAMS FNP-BC
NPI 1306355375
Nurse Practitioner - Primary Care in San Antonio, TX

Q: What is Stellamaris Williams's NPI number?

The NPI number for Stellamaris Williams is 1306355375. It was assigned to this individual provider in the NPPES registry on September 21, 2017.

Q: What is Stellamaris Williams's specialty?

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

Active since September 21, 2017PECOS Enrolled

8414 FOUNTAIN CIR, SAN ANTONIO, TX 78229(210) 277-7795(210) 277-7550 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 15, 2026, Sep 2, 2018, Dec 24, 2017 and 2 more (5 updates tracked since 2017).

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About Stellamaris Williams Fnp-bc NPPES

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

STELLAMARIS WILLIAMS FNP-BC (NPI 1306355375) is an individual primary care provider in San Antonio, Texas, licensed in Texas (AP135970) and active in the NPI registry since September 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306355375

Entity TypeIndividualFemale

Primary Taxonomy363LP2300X

Provider Legal NameSTELLAMARIS WILLIAMSCredential: FNP-BC

Location Address8414 FOUNTAIN CIRSan Antonio, TX 78229-2387

Mailing Address2819 Nw Loop 410San Antonio, TX 78230-5105

Phone(210) 277-7795

Fax(210) 277-7550

Sole ProprietorNo

Enumeration DateSeptember 21, 2017

Last NPPES UpdateJuly 15, 20265 updates tracked since enumeration

NPPES CertifiedJuly 15, 2026

✔ NPI 1306355375 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Primary CarePhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP2300X

License✔ Licensed in TX · AP135970

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License AP135970 (TX)

8414 FOUNTAIN CIR, San Antonio, TX 78229

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Molina Healthcare, WellPoint.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stellamaris Williams Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

1 supplier17 claims17 services$35.27 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Stellamaris Williams's NPI number?

The NPI number for Stellamaris Williams is 1306355375. It was assigned to this individual provider in the NPPES registry on September 21, 2017.

Where is Stellamaris Williams located?

Stellamaris Williams practices at 8414 Fountain Cir, San Antonio, TX 78229. The listed phone number is (210) 277-7795.

What is Stellamaris Williams's specialty?

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

Is Stellamaris Williams enrolled in Medicare?

Yes. Stellamaris Williams is registered in the Medicare PECOS enrollment system.

What insurance does Stellamaris Williams accept?

Health plans from Blue Cross and Blue Shield of Texas, Molina Healthcare and WellPoint list Stellamaris Williams 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 Stellamaris Williams was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.