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Obstetrics/Gynecology

Amber N. Macwilliam, DO

Works at hospitals in San Marcos, TX · New Braunfels, TX · Texas

Summary

Amber N. Macwilliam, DO (Obstetrics/Gynecology) is listed by Medicare at 2 hospitals in San Marcos, TX and New Braunfels, TX. NPI 1073141347. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Amber N. Macwilliam, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Obstetrics/GynecologyPrimary specialty
YesAccepts Medicare assignment
6Years since medical school (graduated 2020)
Edward Via Col Of Osteo Medicine-Carolinas CampusMedical school
FemaleGender (as listed)
BHS Physicians Network, IncGroup practice

Quick answers

Which hospitals does Amber N. Macwilliam work at?
Medicare's official clinician data lists Amber N. Macwilliam at 2 hospitals: CHRISTUS Santa Rosa Hospital-San Marcos and Resolute Health Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Amber N. Macwilliam see patients?
Medicare's clinician data lists 1 practice location in New Braunfels, TX. Call before your visit to confirm the address.
What is Amber N. Macwilliam's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Amber N. Macwilliam accept Medicare assignment?
Yes. Medicare's clinician data says Amber N. Macwilliam accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Amber N. Macwilliam?
(830) 302-4404, as listed in official Medicare / NPI Registry data.
What is Amber N. Macwilliam's NPI number?
1073141347. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Amber N. Macwilliam works

Medicare's Facility Affiliation Data lists Amber N. Macwilliam at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Amber N. Macwilliam is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Amber N. Macwilliam as a member of this group (CMS data updated 2026-10-02).

  • BHS Physicians Network, Inc706 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Texas →

Other OB-GYNs in New Braunfels

Clinicians with the same Medicare primary specialty in New Braunfels, TX — not a recommendation.

All OB-GYNs in New Braunfels →

Clinician information

CredentialDO
Medical schoolEdward Via Col Of Osteo Medicine-Carolinas Campus
Graduation year2020
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1073141347
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians