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Sleep Medicine

Hugo L. Paz Y Mar, MD

Works at hospitals in Orange, CA · California

Summary

Dr. Hugo L. Paz Y Mar, MD is a sleep medicine doctor at 101 The City Dr S, Orange, CA 92868. Phone: (714) 456-7002. Accepts Medicare assignment. In 2024, Hugo L. Paz Y Mar had 377 Original Medicare patients and 991 services. NPI 1528231081. 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: Sleep medicine doctor (Medicare lists Sleep Medicine)
  • Address: 101 The City Dr S, Orange, CA 92868 · Directions
  • Phone: (714) 456‑7002
  • Medicare: Accepts Medicare assignment
  • Hospital: UCI Health-Orange
  • Group practice: UC Regents
  • Medical school: graduated 2004 (22 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Hugo L. Paz Y Mar, 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 Hugo L. Paz Y Mar accept Medicare assignment?
Yes. Medicare's clinician data says Hugo L. Paz Y Mar 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 Hugo L. Paz Y Mar see?
In 2024, CMS data shows 377 Original Medicare patients and 991 services for Hugo L. Paz Y Mar. This counts Original Medicare only and measures volume, not quality.
What is Hugo L. Paz Y Mar's NPI number?
1528231081. 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 Hugo L. Paz Y Mar, 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 patients377
Services billed to Medicare991
Different services or procedures33
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Critical care, first 30-74 minutes (99291)375 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)140 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)79 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)61 services
  5. Test to examine how well the lungs exchange gases (94729)55 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%
  • Arthritis51%
  • Ischemic heart disease49%
  • Diabetes45%
  • Chronic kidney disease45%

Hospitals where Hugo L. Paz Y Mar works

Medicare's Facility Affiliation Data lists Hugo L. Paz Y Mar 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.

  • UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Hugo L. Paz Y Mar is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Hugo L. Paz Y Mar as a member of this group (CMS data updated October 2, 2026).

  • UC Regents319 clinicians in the group

Specialties

Find other Sleep Medicine doctors in California →

Other sleep medicine doctors in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All sleep medicine doctors in California →

Other clinicians in UC Regents

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

Clinician information

CredentialMD
Graduation year2004 (22 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1528231081
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