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Internal Medicine

Zainab Shahid, DO

Works at hospitals in Round Rock, TX · Texas

Summary

Dr. Zainab Shahid, DO is an internal medicine doctor at 100 Medical Pkwy, Lakeway, TX 78738. Phone: (512) 571-5000. Accepts Medicare assignment. In 2024, Zainab Shahid had 233 Original Medicare patients and 341 services. NPI 1912522855. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 100 Medical Pkwy, Lakeway, TX 78738 · Directions (2 more locations)
  • Phone: (512) 571‑5000
  • Medicare: Accepts Medicare assignment
  • Hospital: Baylor Scott & White Medical Center - Round Rock
  • Group practice: Scott and White Clinic
  • Medical school: Lake Erie College Of Osteopathic Medicine, Erie · graduated 2020 (6 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Zainab Shahid, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Zainab Shahid accept Medicare assignment?
Yes. Medicare's clinician data says Zainab Shahid accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Zainab Shahid see?
In 2024, CMS data shows 233 Original Medicare patients and 341 services for Zainab Shahid. This counts Original Medicare only and measures volume, not quality.
What is Zainab Shahid's NPI number?
1912522855. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Zainab Shahid, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients233
Services billed to Medicare341
Different services or procedures12
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)167 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)98 services
  3. Hospital discharge day management, more than 30 minutes (99239)48 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis56%
  • Ischemic heart disease47%
  • Diabetes45%
  • Chronic kidney disease45%

Hospitals where Zainab Shahid works

Medicare's Facility Affiliation Data lists Zainab Shahid at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Zainab Shahid is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zainab Shahid as a member of this group (CMS data updated October 2, 2026).

  • Scott and White Clinic2,461 clinicians in the group

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Lakeway

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

All internal medicine doctors in Lakeway →

Other clinicians in Scott and White Clinic

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2020 (6 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1912522855
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians