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Anesthesiology

John Finneran Iv

Works at hospitals in El Centro, CA · San Diego, CA · California

Summary

John Finneran Iv is an anesthesiologist at 200 W Arbor Dr, San Diego, CA 92103. Phone: (858) 249-6753. Accepts Medicare assignment. In 2024, John Finneran Iv had 596 Original Medicare patients and 806 services. NPI 1912264128. 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 John Finneran Iv, 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 John Finneran Iv accept Medicare assignment?
Yes. Medicare's clinician data says John Finneran Iv 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 John Finneran Iv see?
In 2024, CMS data shows 596 Original Medicare patients and 806 services for John Finneran Iv. This counts Original Medicare only and measures volume, not quality.
What is John Finneran Iv's NPI number?
1912264128. 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 John Finneran Iv, 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 patients596
Services billed to Medicare806
Different services or procedures84
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)96 services
  2. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)91 services
  3. Anesthesia for other procedure on large bowel using an endoscope (00811)59 services
  4. Anesthesia for electroshock therapy (00104)56 services
  5. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)52 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 cholesterol72%
  • Arthritis53%
  • Diabetes43%
  • Depression37%
  • Anxiety36%

Hospitals where John Finneran Iv works

Medicare's Facility Affiliation Data lists John Finneran Iv 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 John Finneran Iv is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists John Finneran Iv as a member of this group (CMS data updated October 2, 2026).

  • Regents of the University of California2,089 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in San Diego

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

All anesthesiologists in San Diego →

Other clinicians in Regents of the University of California

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

Clinician information

Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year2012 (14 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1912264128
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