Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Emergency Medicine

Lionel H. Lee, DO

Works at hospitals in Mesa, AZ · Tucson, AZ · Sahuarita, AZ … · Arizona

Summary

Dr. Lionel H. Lee, DO is an emergency medicine doctor at 1551 E Tangerine Rd, Oro Valley, AZ 85755. Phone: (520) 229-2657. Accepts Medicare assignment. In 2024, Lionel H. Lee had 310 Original Medicare patients and 414 services. NPI 1922259001. 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 Lionel H. Lee, 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 Lionel H. Lee accept Medicare assignment?
Yes. Medicare's clinician data says Lionel H. Lee 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 Lionel H. Lee see?
In 2024, CMS data shows 310 Original Medicare patients and 414 services for Lionel H. Lee. This counts Original Medicare only and measures volume, not quality.
What is Lionel H. Lee's NPI number?
1922259001. 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 Lionel H. Lee, 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 patients310
Services billed to Medicare414
Different services or procedures18
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)128 services
  2. Emergency department visit with moderate level of medical decision making (99284)97 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)84 services
  4. Critical care, first 30-74 minutes (99291)57 services
  5. Emergency department visit with low level of medical decision making (99283)27 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%
  • Arthritis55%
  • Ischemic heart disease41%
  • Atrial fibrillation34%
  • Chronic kidney disease33%

Hospitals where Lionel H. Lee works

Medicare's Facility Affiliation Data lists Lionel H. Lee 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 Lionel H. Lee is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Lionel H. Lee as a member of this group (CMS data updated October 2, 2026).

  • Northwest HBP Medical Services LLC284 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Arizona →

Other emergency medicine doctors in Oro Valley

Clinicians with the same Medicare primary specialty in Oro Valley, AZ — not a recommendation.

All emergency medicine doctors in Oro Valley →

Other clinicians in Northwest HBP Medical Services LLC

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

Clinician information

CredentialDO
Medical schoolMidwestern University, Chicago College Of Osteopathic Med
Graduation year2007 (19 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1922259001
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