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MAI KA KOSTUR FNP-BC
NPI 1831904234
Nurse Practitioner in San Antonio, TX

Active since February 11, 2025PECOS EnrolledAccepts Medicare Assignment
3327 RESEARCH PLZ STE 414, SAN ANTONIO, TX 78235(773) 641-8500 Get Directions Write a Review

NPPES record last updated: June 11, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jun 11, 2025, Feb 11, 2025 (2 updates tracked since 2025).

About Mai Ka Kostur Fnp-bc NPPES

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

MAI KA KOSTUR FNP-BC (NPI 1831904234) is an individual nurse practitioner in San Antonio, Texas, licensed in Texas (AP1028382) and active in the NPI registry since February 2025. She is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1831904234
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMAI KA KOSTURCredential: FNP-BC
Location Address3327 RESEARCH PLZ STE 414San Antonio, TX 78235-5159
Mailing Address2461 Pennilynn WaySan Antonio, TX 78253-4339 · (773) 641-8500
Phone(773) 641-8500
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateFebruary 11, 2025
Last NPPES UpdateJune 11, 20252 updates tracked since enumeration
NPPES CertifiedJune 11, 2025
✔ NPI 1831904234 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in TX · AP1028382
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License AP1028382 (TX)
3327 RESEARCH PLZ STE 414, San Antonio, TX 78235
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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, Imperial Insurance Companies, Inc., Molina Healthcare 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

Mai Ka Kostur Fnp-bc 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 ID143744110
PECOS Enrollment IDI20250411000805
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.

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450058
Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78235 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.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SHARON GURU ARIEL
Nurse Practitioner
3327 RESEARCH PLZ STE 414
SAN ANTONIO, TX 78235
Bexar County (830) 569-4003

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 Mai Ka Kostur's NPI number?

The NPI number for Mai Ka Kostur is 1831904234. It was assigned to this individual provider in the NPPES registry on February 11, 2025.

Where is Mai Ka Kostur located?

Mai Ka Kostur practices at 3327 Research Plz Ste 414, San Antonio, TX 78235. The listed phone number is (773) 641-8500.

What is Mai Ka Kostur's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Mai Ka Kostur enrolled in Medicare?

Yes. Mai Ka Kostur 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 Mai Ka Kostur accept?

Health plans from Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Molina Healthcare, Oscar Insurance Company and UnitedHealthcare and 1 other insurer list Mai Ka Kostur 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 Mai Ka Kostur affiliated with any hospitals?

According to CMS data, Mai Ka Kostur is affiliated with Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for Mai Ka Kostur was last updated on June 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.