NPPES file of Aug 9, 2026

Occupational Therapy Assistant in Maryland

653 NPPES records list occupational therapy assistant with a practice address in Maryland, 11 per 100,000 residents, the 33rd highest rate of 51. Baltimore and Salisbury have the most; each record links to the provider's NPI and the Maryland license search. Page 14 of 14.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 224Z00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Baltimore has the most, 104

  1. Baltimore104
  2. Salisbury37
  3. Rockville35
  4. Lutherville21
  5. Frederick19

Occupational Therapy Assistant records in Maryland

  1. Tami Young, COTA/LSmithsburg, MD 217831497094601
  2. Kristen ZielinskiClinton, MD 207351811662018
  3. Adrienne Zimmerman, COTALutherville, MD 210931669021440

Source: CMS NPPES, primary taxonomy 224Z00000X: records by practice city and the list of records, file of Aug 9, 2026.

Maryland ranks 33 of 51 per resident

  1. Colorado12
  2. Wyoming11
  3. Massachusetts11
  4. Maryland11
  5. Washington10
  6. Oregon9
  7. 50 states and D.C.12

Source: CMS NPPES, primary taxonomy 224Z00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.0% of these records appear in a Medicare file, against 0.1% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Maryland0.0%
  2. United States0.1%

Occupational Therapy Assistant records in Maryland, measured

  • In a Medicare file0 of 653 · 0.0% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file1 · 0.2% here, 0.1% nationally
  • Not updated in five years or more492 · 75.3% here, 72.0% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 224Z00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

653 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in Maryland: 11 per 100,000 residents against 12 nationally (50 states and D.C.). Baltimore has 104 of them (16%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New Jersey648
  2. Colorado686
  3. Kentucky714
  4. Kansas589

States with a similar rate per 100,000

  1. Massachusetts10.6
  2. Washington10.3
  3. Wyoming11.1
  4. Mississippi11.9

The largest states

  1. Texas4,278
  2. Florida3,825
  3. New York2,732
  4. Ohio2,421
  5. Pennsylvania2,155

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.