Dr. Jonathan Kei, MD

  • San Diego, CA
  • Emergency medicine physician
NPI1922028174
Medicare services, 2016
11
Part D claims, 2024
20
Publications
12
Hospital affiliations
1
Industry payments
$27
Practice address
4647 Zion Ave, San Diego, CA 92120
Practice phone
Call (619) 528-5000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Kaiser Permanente Zion Medical Center

Hospital · San Diego, California

See all 3 affiliations

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Dr. Jonathan Kei is an emergency medicine physician in San Diego, California

Dr. Kei practices at Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente.

Dr. Kei's NPI, 1922028174, was assigned on July 20, 2006. Dr. Kei graduated from Sidney Kimmel Medical College in 2004. Dr. Kei holds California license A92379.

NPI and contact details
NPI enumeration date
July 20, 2006
NPI status
Active
Practice phone
(619) 528-5000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Medical school graduation
2004

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Dr. Jonathan Kei practices at Kaiser Permanente Zion Medical Center in San Diego, California

Dr. Kei's primary practice is Kaiser Permanente Zion Medical Center, at 4647 Zion Ave, San Diego, CA 92120 in San Diego County. The practice phone is (619) 528-5000.

Source: Dmand AI Affiliation Data

Dr. Jonathan Kei is affiliated with 2 sites of care and 1 medical group

Dr. Kei's primary practice is Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Kei to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Dr. Kei

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Jonathan Kei's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kei practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Kaiser Permanente Zion Medical CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Jonathan Kei is one of 7,423 emergency medicine physicians in California

Emergency medicine is Dr. Kei's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Kei is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Kei is licensed in California.

Specialties and state licenses

  • Emergency medicine, CaliforniaPrimaryLicense A92379 · 2005 to 2027 · taxonomy 207P00000X

Emergency medicine physicians near Dr. Kei

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Jonathan Kei billed Medicare for 11 services in 2016

CMS data shows 11 Medicare services from Dr. Kei across 1 procedure code in 2016. Medicare paid $1,211 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 201611
Paid by Medicare$1,211
Procedure codes1

Dr. Kei compared with the California median for emergency medicine physicians, 2016

  • Dr. Kei
  • California median
Medicare services
11vs 26596% below
Part D claims
15vs 6276% below

Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Kei's most billed Medicare procedure codes, 2016

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Kei

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Jonathan Kei's patients have a median age of 38

Across all payers, Dmand AI patient panel data puts Dr. Kei's median patient age at 38, with 61% women.

Dr. Kei's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 38

Patient panel by sex, all payers

  • Women61%
  • Men39%

Source: Dmand AI Patient Panel Data

Dr. Jonathan Kei wrote 20 Medicare Part D claims in 2024

In 2024, Dr. Kei wrote 20 Medicare Part D claims for 19 patients. 80% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $150 in total drug cost. In 2016, CMS named 24 claims across 2 drugs.

Part D claims, 202420
Drugs named by CMS1
Total drug cost$150
Part D patients19

Dr. Kei's Part D claims by kind of drug, 2024

  • Generic16 claims80%
  • Brand-name and other4 claims20%

Dr. Kei's most prescribed drugs by claims, 2017

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2016 to 2017

  • 2016
  • 2017
Claims for drugs CMS names
2016: 242017: 1538%

Drugs named by CMS: 1 in 2017, 2 in 2016.

See all prescribing by Dr. Kei

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

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Dr. Jonathan Kei has 12 publications on record

Dmand AI links 12 papers to Dr. Kei, published from 2012 to 2024. The most frequent topics are Intubation, Intratracheal. Dr. Kei has published most often in Perm J. Dr. Kei's most frequent co-authors are Jeffrey John Cavendish, MD, Paul Burbank Dohrenwend, MD and Minh Van Le, MD.

Papers12
Years published2012 to 2024

Topics Dr. Kei writes about most

  • Intubation, Intratracheal

Dr. Kei's most frequent co-authors

Recent publications by Dr. Kei

See all 12 publications and co-authors

See who Dr. Kei researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kei works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Jonathan Kei received $27 in industry payments in 2018

CMS Open Payments shows 1 general payment to Dr. Kei from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Vapotherm Inc paid the most, $27.

Companies that paid Dr. Kei the most, 2018 to 2018

Share is of all general payments to this clinician.

See all payments to Dr. Kei

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Jonathan Kei graduated from Sidney Kimmel Medical College

Dr. Kei graduated from Sidney Kimmel Medical College in 2004.

  1. Medical schoolSidney Kimmel Medical College
  2. Board certified in emergency medicineAmerican Board of Emergency Medicine

Source: Dmand AI Professional Profile Data

Dr. Jonathan Kei accepts plans from 1 insurance carrier

Dr. Kei is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente

Plan types Dr. Kei accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Jonathan Kei's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Jonathan Kei

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Jonathan Kei's NPI number?

Dr. Jonathan Kei's NPI number is 1922028174. It was assigned on July 20, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Jonathan Kei?

Dr. Jonathan Kei is an emergency medicine physician in San Diego, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Jonathan Kei practice?

Dr. Kei practices at 4647 Zion Ave, San Diego, CA 92120. Dr. Kei's primary practice is Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente. Dmand AI also links Dr. Kei to 1 group practice or clinic.

What is Dr. Jonathan Kei's office phone number?

The practice phone on file for Dr. Kei is (619) 528-5000.

What is Dr. Jonathan Kei's medical license number?

Dr. Kei holds California license A92379.

Which hospitals is Dr. Jonathan Kei affiliated with?

Dr. Kei practices at Kaiser Permanente Zion Medical Center in San Diego, California.

What medical group is Dr. Jonathan Kei part of?

Dr. Kei is linked to Southern California Permanente Medical Group.

Does Dr. Jonathan Kei accept Medicare?

Yes. CMS data shows Dr. Kei billed Medicare for 11 services in 2016.

Is Dr. Jonathan Kei board certified?

Yes. Dr. Kei is board certified in emergency medicine by the American Board of Emergency Medicine.

What services does Dr. Jonathan Kei bill to Medicare?

In 2016, Dr. Kei's most billed Medicare services were emergency department visit (99285).

Show 7 more questionsShow fewer questions

Where did Dr. Jonathan Kei go to medical school?

Dr. Kei graduated from Sidney Kimmel Medical College in 2004.

What drugs does Dr. Jonathan Kei prescribe most?

In 2017 Medicare Part D data, Dr. Kei's most prescribed drugs by claims were Hydrocodone-Acetaminophen.

Has Dr. Jonathan Kei received payments from drug or device companies?

CMS Open Payments shows $27 in general payments to Dr. Kei from 1 company from 2018 to 2018. The largest total came from Vapotherm Inc.

How long has Dr. Jonathan Kei been practicing?

Dr. Kei graduated from medical school in 2004, 22 years ago.

Does Dr. Jonathan Kei do research?

Dmand AI links 12 publications to Dr. Kei, published from 2012 to 2024.

Who does Dr. Jonathan Kei publish with?

Dr. Kei's most frequent co-authors are Jeffrey John Cavendish, MD (1 shared paper), Paul Burbank Dohrenwend, MD (1 shared paper) and Minh Van Le, MD (1 shared paper).

What insurance does Dr. Jonathan Kei accept?

Dr. Kei is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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