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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.

SANDRA ONWUKA
NPI 1831745751
Nurse Practitioner - Psychiatric/Mental Health in Cypress, TX

Active since August 15, 2019PECOS Enrolled
16303 GRANT RD, CYPRESS, TX 77429(832) 814-1637(713) 485-5879 Get Directions Write a Review

NPPES record last updated: October 19, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 24, 2024, Aug 15, 2019 (2 updates tracked since 2019).

About Sandra Onwuka NPPES

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

SANDRA ONWUKA (NPI 1831745751) is an individual psychiatric/mental health provider in Cypress, Texas, licensed in Texas (AP142478) and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1831745751
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameSANDRA ONWUKA
Location Address16303 GRANT RDCypress, TX 77429-1253
Mailing Address14001 Fondren Rd Apt 2210Missouri City, TX 77489-1713 · (832) 814-1637
Phone(832) 814-1637
Fax(713) 485-5879
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateAugust 15, 2019
Last NPPES UpdateOctober 19, 20262 updates tracked since enumeration
NPPES CertifiedOctober 19, 2026
✔ NPI 1831745751 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 · AP142478
16303 GRANT RD, Cypress, TX 77429
Open in Google Maps ↗

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sandra Onwuka 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 ID6901236488
PECOS Enrollment IDI20200423003365
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 Sandra Onwuka reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Jason D. Baron, M.D., PA
15 mi
Case Management
5500 GUHN RD
Houston, TX 77040
  • Reassigned Medicare billing, Texas enrollment
  • 18 clinicians in this Medicare group
NPI 1144275140 (713) 783-8889
Calm Psychiatry, PLLC
25 mi
Psychiatric/Mental Health
9894 BISSONNET ST STE 590
Houston, TX 77036
  • Reassigned Medicare billing, Texas enrollment
NPI 1952166175 (713) 485-5789

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
2,219 services110 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77429 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
$90.40 typical visit price
range $58.24 – $176.98
Typical copayment $22.60 (range $14.56 – $44.24)
Most-billed visit code 99203
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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 2

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

C&I HOLDINGS, LLC
Physician Assistant
16303 GRANT RD
CYPRESS, TX 77429
Harris County (281) 516-6186
C&I HOLDINGS, LLC
Psychiatric Hospital
16303 GRANT RD
CYPRESS, TX 77429
Harris County (281) 516-6186

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 Sandra Onwuka's NPI number?

The NPI number for Sandra Onwuka is 1831745751. It was assigned to this individual provider in the NPPES registry on August 15, 2019.

Where is Sandra Onwuka located?

Sandra Onwuka practices at 16303 Grant Rd, Cypress, TX 77429. The listed phone number is (832) 814-1637.

What is Sandra Onwuka's specialty?

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

Is Sandra Onwuka enrolled in Medicare?

Yes. Sandra Onwuka 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 organizations bill Medicare for Sandra Onwuka's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sandra Onwuka reassigns Medicare benefits to 2 organizations: Jason D. Baron, M.D., PA (Houston, TX) and Calm Psychiatry, 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 Sandra Onwuka's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sandra Onwuka 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 5 other insurers list Sandra Onwuka 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 Sandra Onwuka was last updated on October 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.