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

Emergency Medicine

Carlos L. Untal, MD

Works at hospitals in San Luis Obispo, CA · Santa Maria, CA · California

Summary

Dr. Carlos L. Untal, MD is an emergency medicine doctor at 1551 Bishop St, Suite 210, San Luis Obispo, CA 93401. Phone: (805) 329-6262. Accepts Medicare assignment. In 2024, Carlos L. Untal had 401 Original Medicare patients and 5,717 services. NPI 1316923998. 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 Carlos L. Untal, 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 Carlos L. Untal accept Medicare assignment?
Yes. Medicare's clinician data says Carlos L. Untal 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 Carlos L. Untal see?
In 2024, CMS data shows 401 Original Medicare patients and 5,717 services for Carlos L. Untal. This counts Original Medicare only and measures volume, not quality.
What is Carlos L. Untal's NPI number?
1316923998. 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 Carlos L. Untal, 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 patients401
Services billed to Medicare5,717
Different services or procedures40
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,361 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,349 services
  3. Testing for presence of drug, by chemistry analyzers (80307)777 services
  4. Compounded drug, not otherwise classified (J7999)279 services
  5. Electronic analysis reprogramming and refill of spinal canal drug infusion pump by physician (62370)263 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 cholesterol74%
  • Anxiety58%
  • Depression37%
  • Diabetes30%

Hospitals where Carlos L. Untal works

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

Group practices

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

  • Hullander and Mozingo LP10 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in San Luis Obispo

Clinicians with the same Medicare primary specialty in San Luis Obispo, CA — not a recommendation.

All emergency medicine doctors in San Luis Obispo →

Other clinicians in Hullander and Mozingo LP

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

Clinician information

CredentialMD
Graduation year2000 (26 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1316923998
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