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MALLORY VIAL
NPI 1689314957
Obstetrics & Gynecology in Houston, TX

Active since April 01, 2022PECOS EnrolledAccepts Medicare Assignment
6411 FANNIN ST, HOUSTON, TX 77030(713) 704-4000 Get Directions Write a Review

NPPES record last updated: July 2, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mallory Vial NPPES

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

MALLORY VIAL (NPI 1689314957) is an individual obstetrics & gynecology provider in Houston, Texas, licensed in Texas (W5994) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1689314957
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMALLORY VIAL
Location Address6411 FANNIN STHouston, TX 77030-1501
Mailing Address6431 Fannin St, Msb 3.286Houston, TX 77030-1501
Phone(713) 704-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateApril 1, 2022
Last NPPES UpdateJuly 2, 2026
NPPES CertifiedJuly 2, 2026
✔ NPI 1689314957 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in TX · W5994
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
6411 FANNIN ST, Houston, TX 77030
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.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

Mallory Vial 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 ID3476010638
PECOS Enrollment IDI20260806004236
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 Reassignment

Medicare enrollment records show Mallory Vial reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ut Physicians
0.1 mi
Anesthesiology
6410 FANNIN ST, 1500
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 3,111 clinicians in this Medicare group
NPI 1033157821 (832) 325-7325

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 77030 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$72.62 typical visit price
range $18.60 – $143.93
Typical copayment $18.15 (range $4.65 – $35.98)
Most-billed visit code 99213
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.

HASHIM ZAIDI M.D.
Emergency Medicine
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 500-7878
DAVID BALTRUSAITIS MD
Radiology (Diagnostic Radiology)
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 797-5929
CYNTHIA MARSHA DANIS RN
Registered Nurse (Critical Care Medicine)
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 704-4000
MR. MICHAEL KENNETH HOWZE JR.
Anesthesiologist Assistant
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 500-7160
STEPHEN M LARSON D.M.D.
Dentist (General Practice)
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 500-6200
STEPHEN G HECHT M.D.
Emergency Medicine
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 704-4060
VLADIMIR MELNIKOV M.D.
Anesthesiology
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 500-6200
MRS. CAROL JEAN UNDERWOOD BSN RN CCRC
Registered Nurse (Critical Care Medicine)
6411 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 704-4230

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 Mallory Vial's NPI number?

The NPI number for Mallory Vial is 1689314957. It was assigned to this individual provider in the NPPES registry on April 1, 2022.

Where is Mallory Vial located?

Mallory Vial practices at 6411 Fannin St, Houston, TX 77030. The listed phone number is (713) 704-4000.

What is Mallory Vial's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mallory Vial enrolled in Medicare?

Yes. Mallory Vial 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 organization bills Medicare for Mallory Vial's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mallory Vial reassigns Medicare benefits to Ut Physicians (Houston, TX). The 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 Mallory Vial's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mallory Vial accept?

Health plans from Oscar Insurance Company list Mallory Vial 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 Mallory Vial was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.