MR. STEPHEN P WHITESIDES AA-C
NPI 1669851747
Anesthesiologist Assistant in Round Rock, TX

Q: What is Stephen Whitesides's NPI number?

The NPI number for Stephen Whitesides is 1669851747. It was assigned to this individual provider in the NPPES registry on May 22, 2015.

Q: What is Stephen Whitesides's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Active since May 22, 2015Accepts Medicare Assignment

300 UNIVERSITY BLVD, ROUND ROCK, TX 78665(512) 509-0100 Get Directions Write a Review

NPPES record last updated: October 30, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Mr. Stephen P Whitesides Aa-c NPPES

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

MR. STEPHEN P WHITESIDES AA-C (NPI 1669851747) is an individual anesthesiologist assistant in Round Rock, Texas, licensed in Texas (3056) and active in the NPI registry since May 2015. He is affiliated with Baylor Scott & White Medical Center - Round Rock and is a graduate of Other (2015).

NPPES Registry Identity

NPI1669851747

Entity TypeIndividualMale

Primary Taxonomy367H00000X

Provider Legal NameMR. STEPHEN P WHITESIDESCredential: AA-C

Location Address300 UNIVERSITY BLVDRound Rock, TX 78665-1032

Mailing AddressPo Box 844658Dallas, TX 75284-4658 · (800) 994-0371

Phone(512) 509-0100

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateMay 22, 2015

Last NPPES UpdateOctober 30, 2025

NPPES CertifiedOctober 30, 2025

✔ NPI 1669851747 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367H00000X

License✔ Licensed in TX · 3056

Definition

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

300 UNIVERSITY BLVD, Round Rock, TX 78665

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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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Stephen P Whitesides Aa-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 ID4789992850

PECOS Enrollment IDI20250829002200

Medicare Billing Reassignments

Medicare enrollment records show Stephen Whitesides reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Scott & White Clinic

8.8 mi

Internal Medicine

1701 E PFLUGERVILLE PKWY
Pflugerville, TX 78660

Reassigned Medicare billing, Texas enrollment
2,795 clinicians in this Medicare group

NPI 1679691729 (512) 259-6000

Western Anesthesiology Associates, Inc.

693 mi

Anesthesiology

615 S NEW BALLAS RD, DEPT. OF ANESTHESIA
Saint Louis, MO 63141

Reassigned Medicare billing, Missouri enrollment
309 clinicians in this Medicare group

NPI 1275646754 (636) 386-9224

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 3

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.

Anesthesia for x-ray on artery of brain, heart, or chest 01926

Anesthesia is given before an x-ray of the brain, heart, or chest artery to ensure comfort and stillness. It helps to eliminate discomfort or pain during the procedure. It's administered by a trained professional, ensuring a safe and smooth procedure.

18 services18 patients

Anesthesia for placement or revision of blood flow shunt 01844

Anesthesia for blood flow shunt placement or revision ensures comfort during the procedure. It involves medication to numb or induce sleep, preventing pain or discomfort. It's safe, monitored by professionals, and tailored to individual needs.

16 services15 patients

Anesthesia for procedure to assess heart electrical activity 00537

Anesthesia for a procedure to assess heart electrical activity helps ensure comfort and relaxation. It involves administering medication that either numbs a specific area or makes you sleep temporarily. This allows doctors to safely examine your heart's electrical signals without causing discomfort.

14 services14 patients

Hospital Affiliations CMS Care Compare

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

Baylor Scott & White Medical Center - Round Rock

Acute Care Hospitals · Round Rock, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number670034

Location300 University BlvdRound Rock, TX 78664 · Williamson County

Emergency services Birthing friendly

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.

BRENNEN J. BEATTY MD

Emergency Medicine