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MARY PHUBONG NKWAIN
NPI 1669109666
Nurse Practitioner - Psychiatric/Mental Health in San Antonio, TX

Active since August 01, 2022PECOS Enrolled
8535 TOM SLICK, SAN ANTONIO, TX 78229(210) 616-3900 Get Directions Write a Review

NPPES record last updated: May 7, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 7, 2024, Aug 1, 2022 (2 updates tracked since 2022).

About Mary Phubong Nkwain NPPES

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

MARY PHUBONG NKWAIN (NPI 1669109666) is an individual psychiatric/mental health provider in San Antonio, Texas, licensed in Texas (1093159) and active in the NPI registry since August 2022. She is enrolled in Medicare PECOS and maintains a secondary practice location in Morganton.

NPPES Registry Identity

NPI1669109666
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMARY PHUBONG NKWAIN
Location Address8535 TOM SLICKSan Antonio, TX 78229-3367
Mailing Address5788 Eckhert RdSan Antonio, TX 78240-3900 · (210) 450-6450
Phone(210) 616-3900
Sole ProprietorNo
Enumeration DateAugust 1, 2022
Last NPPES UpdateMay 7, 20242 updates tracked since enumeration
NPPES CertifiedMay 7, 2024
✔ NPI 1669109666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in TX · 1093159
8535 TOM SLICK, San Antonio, TX 78229
Open in Google Maps ↗

Secondary Practice Location 1

Location 1329 Sanford Dr Ste BMorganton, NC 28655-2576 · Phone (828) 430-9120

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Imperial Insurance Companies, Inc., WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Phubong Nkwain 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.

Medicare Billing Reassignments

2

Medicare enrollment records show Mary Nkwain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The University Of Texas Health Science Center At San Antonio
0.2 mi
General Acute Care Hospital
8311 EWING HALSELL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 2,397 clinicians in this Medicare group
NPI 1326829904 (210) 562-8000
Senior Psychcare Of Dallas I, PLLC
188 mi
Psychiatry
4635 SOUTHWEST FWY STE 635
Houston, TX 77027
  • Reassigned Medicare billing, Texas enrollment
  • 58 clinicians in this Medicare group
NPI 1942596903 (713) 850-0049

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 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.

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.

JOSHUA D ESSERY PSYD
Psychologist (Clinical)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
TORGEIR REM AAVIK LPC
Counselor (Professional)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
RAMONA L LEONARDS LPC
Counselor (Professional)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
MS. MARINA VALLEJO MARTINEZ LMSW
Social Worker (Clinical)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
HENRY BULLOCK PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
MRS. LEEANN MARIE BRIXIUS LPC
Counselor (Professional)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 616-0300
SOAD MICHELSEN M.D.
Psychiatry & Neurology (Child & Adolescent Psychiatry)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 582-6440
DR. KACY D. REEVES DO
Psychiatry & Neurology (Psychiatry)
8535 TOM SLICK
SAN ANTONIO, TX 78229
Bexar County (210) 582-6440

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 Mary Nkwain's NPI number?

The NPI number for Mary Nkwain is 1669109666. It was assigned to this individual provider in the NPPES registry on August 1, 2022.

Where is Mary Nkwain located?

Mary Nkwain practices at 8535 Tom Slick, San Antonio, TX 78229. The listed phone number is (210) 616-3900.

What is Mary Nkwain's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Mary Nkwain enrolled in Medicare?

Yes. Mary Nkwain is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mary Nkwain's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Nkwain reassigns Medicare benefits to 2 organizations: The University Of Texas Health Science Center At San Antonio (San Antonio, TX) and Senior Psychcare Of Dallas I, PLLC (Houston, TX). 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 Mary Nkwain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Nkwain accept?

Health plans from Cigna Healthcare, Imperial Insurance Companies, Inc. and WellPoint list Mary Nkwain 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 Mary Nkwain was last updated on May 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.