1. Home
  2. Directory
  3. Texas
  4. Denison
  5. Nurse Practitioner
  6. NPI Profile

MRS. LYDIA ESTELLE OSTERMAN AGACNP
NPI 1710700034
Nurse Practitioner - Gerontology in Denison, TX

Active since November 05, 2024PECOS EnrolledAccepts Medicare Assignment
5125 TEXOMA MEDICAL CENTER DR STE 100, DENISON, TX 75020(903) 868-4700(903) 892-4910 Get Directions Write a Review

NPPES record last updated: November 13, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 13, 2024, Nov 5, 2024 (2 updates tracked since 2024).

About Mrs. Lydia Estelle Osterman Agacnp NPPES

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

MRS. LYDIA ESTELLE OSTERMAN AGACNP (NPI 1710700034) is an individual gerontology provider in Denison, Texas, licensed in Texas (1170305) and active in the NPI registry since November 2024. She is enrolled in Medicare PECOS, is affiliated with Texoma Medical Center, and is a graduate of Texas Tech University Health Science Center School Of Medicine (2021).

NPPES Registry Identity

NPI1710700034
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameMRS. LYDIA ESTELLE OSTERMANCredential: AGACNP
Location Address5125 TEXOMA MEDICAL CENTER DR STE 100Denison, TX 75020-0084
Mailing AddressPo Box 911230Dallas, TX 75391-1230 · (972) 997-8000 · Fax (972) 234-0813
Phone(903) 868-4700
Fax(903) 892-4910
Sole ProprietorNo
Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 2021
Enumeration DateNovember 5, 2024
Last NPPES UpdateNovember 13, 20242 updates tracked since enumeration
NPPES CertifiedNovember 13, 2024
✔ NPI 1710700034 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in TX · 1170305
Also ListedNurse PractitionerTaxonomy 363L00000X · License 1170305 (TX)
5125 TEXOMA MEDICAL CENTER DR STE 100, Denison, TX 75020
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

Mrs. Lydia Estelle Osterman Agacnp 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 ID1254865074
PECOS Enrollment IDI20241114004838
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 Lydia Osterman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Texas Oncology PA
64 mi
Medical Oncology
3410 WORTH ST
Dallas, TX 75246
  • Reassigned Medicare billing, Texas enrollment
  • 1,054 clinicians in this Medicare group
NPI 1003083445 (972) 997-8000

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Texoma Medical Center

Acute Care Hospitals · Denison, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450324
Location5016 S Us Highway 75Denison, TX 75020 · Grayson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75020 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 6

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

MR. RAHIL SHAH FNP-C
Nurse Practitioner (Family)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4700
SUSMITA SAKRUTI M.D
Internal Medicine (Hematology & Oncology)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4700
DR. ADARSH SIDDA M.D.
Internal Medicine (Hematology & Oncology)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4700
ONCOLOGY PHARMACY SERVICES INC
Pharmacy (Specialty Pharmacy)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4790
DR. AMIR ALI FARIDI M.D.
Internal Medicine (Hematology & Oncology)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4700
PROF. JILL P RUIZ MD
Radiology (Radiation Oncology)
5125 TEXOMA MEDICAL CENTER DR STE 100
DENISON, TX 75020
Grayson County (903) 868-4700

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 Lydia Osterman's NPI number?

The NPI number for Lydia Osterman is 1710700034. It was assigned to this individual provider in the NPPES registry on November 5, 2024.

Where is Lydia Osterman located?

Lydia Osterman practices at 5125 Texoma Medical Center Dr Ste 100, Denison, TX 75020. The listed phone number is (903) 868-4700.

What is Lydia Osterman's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Lydia Osterman enrolled in Medicare?

Yes. Lydia Osterman 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 Lydia Osterman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Osterman reassigns Medicare benefits to Texas Oncology PA (Dallas, 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 Lydia Osterman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lydia Osterman 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 Lydia Osterman 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.

Is Lydia Osterman affiliated with any hospitals?

According to CMS data, Lydia Osterman is affiliated with Texoma Medical Center.

When was this NPI record last updated?

The NPPES record for Lydia Osterman was last updated on November 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.