MRS. LARISSA MAREK SPHEERIS FNP
NPI 1386247526
Nurse Practitioner - Family in Sugar Land, TX
About Mrs. Larissa Marek Spheeris Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. LARISSA MAREK SPHEERIS FNP (NPI 1386247526) is an individual family provider in Sugar Land, Texas, licensed in Texas (1033658) and active in the NPI registry since November 2020. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
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
Mrs. Larissa Marek Spheeris Fnp 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.
Medicare Billing Reassignments
2Medicare enrollment records show Larissa Spheeris reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 1,579 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,407 clinicians in this Medicare group
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 6
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXHouston Methodist Clear Lake Hospital
Acute Care Hospitals · Nassau Bay, TXHouston Methodist Sugarland Hospital
Acute Care Hospitals · Sugar Land, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77479 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SUGAR LAND, TX 77479
SUGARLAND, TX 77479
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 Larissa Spheeris's NPI number?
The NPI number for Larissa Spheeris is 1386247526. It was assigned to this individual provider in the NPPES registry on November 19, 2020.
Where is Larissa Spheeris located?
Larissa Spheeris practices at 16537 Southwest Fwy Mob 4 St 500, Sugar Land, TX 77479. The listed phone number is (281) 274-7595.
What is Larissa Spheeris's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Larissa Spheeris enrolled in Medicare?
Yes. Larissa Spheeris 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 Larissa Spheeris's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Larissa Spheeris reassigns Medicare benefits to 2 organizations: Houston Methodist Specialty Physicians (Houston, TX) and Tmh Physician Associates 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 Larissa Spheeris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Larissa Spheeris affiliated with any hospitals?
According to CMS data, Larissa Spheeris is affiliated with Houston Methodist Hospital, Houston Methodist Clear Lake Hospital and Houston Methodist Sugarland Hospital.
When was this NPI record last updated?
The NPPES record for Larissa Spheeris was last updated on June 25, 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.
# Mrs. Larissa Marek Spheeris, FNP · NPI 1386247526
Family physician in Sugar Land, Texas. Individual provider, active in the CMS NPPES registry since November 19, 2020.
## Identity
- **NPI:** 1386247526 (Entity type: Individual)
- **Enumerated:** November 19, 2020
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 1033658 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 16537 SOUTHWEST FWY, MOB 4 ST 500, Sugar Land, TX 77479
- **Phone:** (281) 274-7595
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Houston Methodist Specialty Physicians (NPI 1902614332, Houston, TX); Tmh Physician Associates PLLC (NPI 1275779225, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 25, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1386247526) · Data from the CMS NPPES public registry.