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Surgical Oncology

Martin L. Koonsman Jr., MD

Works at hospitals in Dallas, TX · Texas

Summary

Dr. Martin L. Koonsman Jr., MD is a surgical oncologist at 221 W Colorado Blvd, Suite 532, Dallas, TX 75208. Phone: (214) 943-8605. Accepts Medicare assignment. In 2024, Martin L. Koonsman Jr. had 37 Original Medicare patients and 59 services. NPI 1992746580. 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: Surgical oncologist (Medicare lists Surgical Oncology)
  • Address: 221 W Colorado Blvd, Suite 532, Dallas, TX 75208 · Directions
  • Phone: (214) 943‑8605
  • Medicare: Accepts Medicare assignment
  • Hospital: Methodist Dallas Medical Center
  • Group practice: Texas Oncology PA
  • Medical school: Texas Tech University Health Science Center School Of Medicine · graduated 1988 (38 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Martin L. Koonsman Jr., 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 Martin L. Koonsman Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Martin L. Koonsman Jr. 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 Martin L. Koonsman Jr. see?
In 2024, CMS data shows 37 Original Medicare patients and 59 services for Martin L. Koonsman Jr.. This counts Original Medicare only and measures volume, not quality.
What is Martin L. Koonsman Jr.'s NPI number?
1992746580. 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 Martin L. Koonsman Jr., 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 patients37
Services billed to Medicare59
Different services or procedures11
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)45 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%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)65%
  • Arthritis49%
  • Chronic kidney disease41%
  • Diabetes32%

Hospitals where Martin L. Koonsman Jr. works

Medicare's Facility Affiliation Data lists Martin L. Koonsman Jr. 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 Martin L. Koonsman Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Martin L. Koonsman Jr. as a member of this group (CMS data updated October 2, 2026).

  • Texas Oncology PA1,014 clinicians in the group

Specialties

Find other Surgical Oncology doctors in Texas →

Other surgical oncologists in Dallas

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

All surgical oncologists in Dallas →

Other clinicians in Texas Oncology PA

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

Clinician information

CredentialMD
Medical schoolTexas Tech University Health Science Center School Of Medicine
Graduation year1988 (38 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1992746580
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