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Internal Medicine

Joel C. Diamant, MD

Works at hospitals in La Jolla, CA · Encinitas, CA · San Diego, CA · California

Summary

Joel C. Diamant, MD (Internal Medicine) is listed by Medicare at 4 hospitals in La Jolla, CA, Encinitas, CA and San Diego, CA. NPI 1164498663. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Joel C. Diamant, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
36Years since medical school (graduated 1990)
MaleGender (as listed)
Scripps HealthGroup practice

Quick answers

Which hospitals does Joel C. Diamant work at?
Medicare's official clinician data lists Joel C. Diamant at 4 hospitals: Scripps Green Hospital, Scripps Memorial Hospital - Encinitas, Scripps Memorial Hospital La Jolla and Scripps Mercy Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Joel C. Diamant see patients?
Medicare's clinician data lists 1 practice location in La Jolla, CA. Call before your visit to confirm the address.
What is Joel C. Diamant's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Joel C. Diamant accept Medicare assignment?
Yes. Medicare's clinician data says Joel C. Diamant accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Joel C. Diamant offer telehealth?
Medicare's clinician data says Joel C. Diamant offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Joel C. Diamant?
(858) 554-9100, as listed in official Medicare / NPI Registry data.
What is Joel C. Diamant's NPI number?
1164498663. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Joel C. Diamant works

Medicare's Facility Affiliation Data lists Joel C. Diamant at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Joel C. Diamant is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Joel C. Diamant as a member of this group (CMS data updated 2026-10-02).

  • Scripps Health1,433 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in La Jolla

Clinicians with the same Medicare primary specialty in La Jolla, CA — not a recommendation.

All internal medicine doctors in La Jolla →

Clinician information

CredentialMD
Graduation year1990
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1164498663
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians