1. Home
  2. Directory
  3. Texas
  4. Dallas
  5. Physician Assistant
  6. NPI Profile

MARIANNE SIEBERT PA-C
NPI 1750834164
Physician Assistant in Dallas, TX

Active since August 02, 2016PECOS EnrolledAccepts Medicare Assignment
621 N HALL ST, SUITE 400, DALLAS, TX 75226(469) 800-7400 Get Directions Write a Review

NPPES record last updated: March 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 2, 2026, Apr 11, 2022 (2 updates tracked since 2022).

About Marianne Siebert Pa-c NPPES

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

MARIANNE SIEBERT PA-C (NPI 1750834164) is an individual physician assistant in Dallas, Texas, licensed in Texas (PA10700) and active in the NPI registry since August 2016. She is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1750834164
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMARIANNE SIEBERTCredential: PA-C
Location Address621 N HALL ST, SUITE 400Dallas, TX 75226-1339
Mailing Address621 N Hall St, Suite 400Dallas, TX 75226-1339 · (469) 800-7400
Phone(469) 800-7400
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateAugust 2, 2016
Last NPPES UpdateMarch 2, 20262 updates tracked since enumeration
NPPES CertifiedMarch 2, 2026
✔ NPI 1750834164 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in TX · PA10700
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
621 N HALL ST, Dallas, TX 75226
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marianne Siebert Pa-c 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 ID3072891365
PECOS Enrollment IDI20161020000324
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.

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
34 services34 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
21 services20 patients

Hospital Affiliations CMS Care Compare

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

Baylor University Medical Center

Acute Care Hospitals · Dallas, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450021
Location3500 Gaston AveDallas, TX 75246 · Dallas County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75226 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
$88.19 typical visit price
range $57.18 – $172.86
Typical copayment $22.04 (range $14.29 – $43.21)
Most-billed visit code 99203
Established Patient
$71.28 typical visit price
range $18.48 – $141.20
Typical copayment $17.82 (range $4.62 – $35.30)
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.

JOHN HYLAND M.D.
Internal Medicine (Cardiovascular Disease)
621 N HALL ST, SUITE 400
DALLAS, TX 75226
Dallas County (214) 826-5000
DR. KEVIN R WHEELAN MD
Internal Medicine (Clinical Cardiac Electrophysiology)
621 N HALL ST, SUITE 400
DALLAS, TX 75226
Dallas County (469) 800-7400
BAYLOR HEART & VASCULAR CENTER LLP
Nurse Practitioner
621 N HALL ST
DALLAS, TX 75226
Dallas County (214) 820-0650
MILTON PACKER MD
Internal Medicine (Cardiovascular Disease)
621 N HALL ST
DALLAS, TX 75226
Dallas County (214) 820-7500
CARDIOLOGY CONSULTANTS OF TEXAS
Internal Medicine (Cardiovascular Disease)
621 N HALL ST, SUITE 400
DALLAS, TX 75226
Dallas County (214) 596-2870
DR. ROBERT C KOWAL MD
Internal Medicine (Clinical Cardiac Electrophysiology)
621 N HALL ST, SUITE 400
DALLAS, TX 75226
Dallas County (469) 800-7400
STEPHEN E HOHMANN MD
Surgery (Vascular Surgery)
621 N HALL ST, STE 100
DALLAS, TX 75226
Dallas County (214) 821-9600
RON BARRETT PA
Physician Assistant (Medical)
621 N HALL ST, SUITE 400
DALLAS, TX 75226
Dallas County (214) 826-5000

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 Marianne Siebert's NPI number?

The NPI number for Marianne Siebert is 1750834164. It was assigned to this individual provider in the NPPES registry on August 2, 2016.

Where is Marianne Siebert located?

Marianne Siebert practices at 621 N Hall St Suite 400, Dallas, TX 75226. The listed phone number is (469) 800-7400.

What is Marianne Siebert's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Marianne Siebert enrolled in Medicare?

Yes. Marianne Siebert 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.

What insurance does Marianne Siebert accept?

Health plans from Blue Cross and Blue Shield of Texas list Marianne Siebert 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 Marianne Siebert affiliated with any hospitals?

According to CMS data, Marianne Siebert is affiliated with Baylor University Medical Center.

When was this NPI record last updated?

The NPPES record for Marianne Siebert was last updated on March 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.