NPPES file of Aug 9, 2026

Orthopaedic Surgery Physician in Maryland

457 NPPES records list orthopaedic surgery physician with a practice address in Maryland, 7.4 per 100,000 residents, the 33rd highest rate of 51. Baltimore and Bethesda have the most; each record links to the provider's NPI and the Maryland license search. Page 10 of 10.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207X00000X · 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, 158

  1. Baltimore158
  2. Bethesda35
  3. Silver Spring18
  4. Rockville17
  5. Towson17

Orthopaedic Surgery Physician records in Maryland

  1. Emad Zeitouneh, M.D.Baltimore, MD 212271760486435
  2. Eliza Zenczykiewicz, AGACNP-BCBaltimore, MD 212181528636776
  3. Jeff Zhang, M.D.Perry Hall, MD 211281942484209
  4. Diana Zhu, MDBaltimore, MD 212871750818530
  5. Ryan Zimmerman, M.D.Lutherville, MD 210931164659645
  6. Matthew Zimmermann, MDBethesda, MD 208171245457142
  7. Chad Zooker, M.D.Baltimore, MD 212091306027263

Source: CMS NPPES, primary taxonomy 207X00000X: records by practice city and the list of records, file of Aug 9, 2026.

Maryland ranks 33 of 51 per resident

  1. Hawaii7.5
  2. Oklahoma7.4
  3. New Jersey7.4
  4. Maryland7.4
  5. Delaware7.4
  6. Louisiana7.3
  7. 50 states and D.C.7.4

Source: CMS NPPES, primary taxonomy 207X00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.6% of these records appear in a Medicare file, against 76.5% 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. Maryland78.6%
  2. United States76.5%

Orthopaedic Surgery Physician records in Maryland, measured

  • In a Medicare file359 of 457 · 78.6% here, 76.5% nationally
  • In the CMS Doctors and Clinicians file299 · 65.4% here, 62.5% nationally
  • Not updated in five years or more281 · 61.5% here, 56.8% nationally
  • Median graduation year2002 · the 299 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207X00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

457 NPPES records list orthopaedic surgery physician (207X00000X) as their primary taxonomy with a practice address in Maryland: 7.4 per 100,000 residents against 7.4 nationally (50 states and D.C.). Baltimore has 158 of them (35%).

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. Arizona462
  2. Tennessee467
  3. Colorado471
  4. Indiana491

States with a similar rate per 100,000

  1. Delaware7.4
  2. New Jersey7.4
  3. Louisiana7.3
  4. Oklahoma7.4

The largest states

  1. California2,276
  2. Texas1,514
  3. Florida1,470
  4. New York1,339
  5. Pennsylvania1,253

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.