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Physician Assistant

Zorina M. Thomas, PA

Works at hospitals in Frederick, MD · Maryland

Summary

Zorina M. Thomas, PA is a physician assistant at 400 W 7th St, Frederick, MD 21701. Phone: (240) 566-3300. Accepts Medicare assignment. In 2024, Zorina M. Thomas had 465 Original Medicare patients and 659 services. NPI 1194972471. 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: Physician assistant
  • Address: 400 W 7th St, Frederick, MD 21701 · Directions
  • Phone: (240) 566‑3300
  • Medicare: Accepts Medicare assignment
  • Hospital: Frederick Health Hospital
  • Group practice: Hospitalist Medicine Physicians of Maryland PC
  • School: graduated 2007
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Zorina M. Thomas, 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 Zorina M. Thomas accept Medicare assignment?
Yes. Medicare's clinician data says Zorina M. Thomas 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 Zorina M. Thomas see?
In 2024, CMS data shows 465 Original Medicare patients and 659 services for Zorina M. Thomas. This counts Original Medicare only and measures volume, not quality.
What is Zorina M. Thomas's NPI number?
1194972471. 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 Zorina M. Thomas, 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 patients465
Services billed to Medicare659
Different services or procedures8
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Hospital discharge day management, more than 30 minutes (99239)393 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)141 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)90 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)13 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%
  • Arthritis61%
  • Ischemic heart disease49%
  • Diabetes43%
  • Anxiety41%

Hospitals where Zorina M. Thomas works

Medicare's Facility Affiliation Data lists Zorina M. Thomas 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.

  • Frederick Health HospitalFrederick, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210005

Practice locations

Addresses where Zorina M. Thomas is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zorina M. Thomas as a member of this group (CMS data updated October 2, 2026).

  • Hospitalist Medicine Physicians of Maryland PC71 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, Maryland →

Other physician assistants in Frederick

Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.

All physician assistants in Frederick →

Other clinicians in Hospitalist Medicine Physicians of Maryland PC

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

Clinician information

CredentialPA
Graduation year2007
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1194972471
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