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Family Practice

Denis J. Lawlor, DO

Works at hospitals in Harvey, IL · Chicago, IL · Illinois

Summary

Dr. Denis J. Lawlor, DO is a family doctor at 14290 S La Grange Rd, Orland Park, IL 60462. Phone: (888) 824-0200. Accepts Medicare assignment. In 2024, Denis J. Lawlor had 241 Original Medicare patients and 1,596 services. NPI 1427519875. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Denis J. Lawlor, 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 Denis J. Lawlor accept Medicare assignment?
Yes. Medicare's clinician data says Denis J. Lawlor 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 Denis J. Lawlor see?
In 2024, CMS data shows 241 Original Medicare patients and 1,596 services for Denis J. Lawlor. This counts Original Medicare only and measures volume, not quality.
What is Denis J. Lawlor's NPI number?
1427519875. 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 Denis J. Lawlor, 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 patients241
Services billed to Medicare1,596
Different services or procedures22
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)837 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)207 services
  3. Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)139 services
  4. Aspiration and/or injection of fluid from large joint (20610)126 services
  5. Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose (J7323)122 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%
  • Arthritis75%
  • High cholesterol73%
  • Diabetes32%
  • Ischemic heart disease22%
  • Anxiety21%

Hospitals where Denis J. Lawlor works

Medicare's Facility Affiliation Data lists Denis J. Lawlor 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 Denis J. Lawlor is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Denis J. Lawlor as a member of this group (CMS data updated October 2, 2026).

  • University of Chicago1,712 clinicians in the group

Specialties

Find other Family Practice doctors in Illinois →

Other family doctors in Orland Park

Clinicians with the same Medicare primary specialty in Orland Park, IL — not a recommendation.

All family doctors in Orland Park →

Other clinicians in University of Chicago

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

Clinician information

CredentialDO
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427519875
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