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SOPHIA GRACE MILHOLLIN SLP
NPI 1164303699
Speech-Language Pathologist in Saint Louis, MO

Active since September 10, 2025
9701 LANDMARK PARKWAY DR STE 201, SAINT LOUIS, MO 63127(314) 843-3828 Get Directions Write a Review

NPPES record last updated: September 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sophia Grace Milhollin Slp NPPES

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

SOPHIA GRACE MILHOLLIN SLP (NPI 1164303699) is an individual speech-language pathologist provider in Saint Louis, Missouri and active in the NPI registry since September 2025. She is a graduate of Other (2025).

NPPES Registry Identity

NPI1164303699
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameSOPHIA GRACE MILHOLLINCredential: SLP
Location Address9701 LANDMARK PARKWAY DR STE 201Saint Louis, MO 63127-1665
Mailing Address9701 Landmark Parkway Dr Ste 201Saint Louis, MO 63127-1665 · (314) 843-3828
Phone(314) 843-3828
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateSeptember 10, 2025
NPPES CertifiedSeptember 10, 2025
✔ NPI 1164303699 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
Definition
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
9701 LANDMARK PARKWAY DR STE 201, Saint Louis, MO 63127
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sophia Grace Milhollin Slp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1355832866
PECOS Enrollment IDI20251112003563

Medicare Billing Reassignment

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

Gwent LLC
Same address
Otolaryngology
9701 LANDMARK PARKWAY DR STE 201
Saint Louis, MO 63127
  • Reassigned Medicare billing, Missouri enrollment
  • 15 clinicians in this Medicare group
NPI 1508494543 (314) 843-3828

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

Other Providers at the Same Location NPPES 6

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

ALLISON COLEMAN BAETEN AU.D.
Audiologist
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828
GWENT LLC
Otolaryngology
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828
DR. JONATHAN YOON M.D.
Otolaryngology
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828
DIANA JAROCKI AUD
Audiologist
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828
MEGAN AZAR ONDER FNP-C
Nurse Practitioner (Family)
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828
COURTNEY M DELAU AUD
Audiologist
9701 LANDMARK PARKWAY DR STE 201
SAINT LOUIS, MO 63127
St. Louis County (314) 843-3828

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 Sophia Milhollin's NPI number?

The NPI number for Sophia Milhollin is 1164303699. It was assigned to this individual provider in the NPPES registry on September 10, 2025.

Where is Sophia Milhollin located?

Sophia Milhollin practices at 9701 Landmark Parkway Dr Ste 201, Saint Louis, MO 63127. The listed phone number is (314) 843-3828.

What is Sophia Milhollin's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Is Sophia Milhollin enrolled in Medicare?

Yes. Sophia Milhollin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sophia Milhollin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sophia Milhollin reassigns Medicare benefits to Gwent LLC (Saint Louis, MO). 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 Sophia Milhollin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sophia Milhollin accept?

Health plans from UnitedHealthcare list Sophia Milhollin 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 Sophia Milhollin was last updated on September 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.