Updated October 2026

Emergency medicine physicians in Mission Viejo, CA

Emergency medicine
Mission Viejo, California

Emergency medicine physicians: 34
Linked to a hospital or group: 31
Hospitals with an emergency medicine physician: 20
Medical groups with an emergency medicine physician: 29
Practice at a hospital: 29

There are 34 emergency medicine physicians in Mission Viejo. Vituity has the most, 9, and Providence Mission Hospital has the most affiliated emergency medicine physicians, 21. 14% finished medical school 30 or more years ago.

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Mission Viejo emergency medicine physicians, listed A to Z by last name

Each emergency medicine physician on the list has emergency medicine as their primary specialty and a Mission Viejo practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Mission Viejo emergency medicine physicians, A to Z
Emergency medicine physician	Hospitals	Medical groups	Email and phone
Amin Anton Abdi, MDNPI 1437438009	3 hospitals	4 groups	Contacts
Andrew Taylor Adams, MDNPI 1174085260	2 hospitals	3 groups	Contacts
Justin Francis Blaum, DONPI 1699113852	1 hospital	7 groups	Contacts
Shadd Nathan Cabalatungan, MDNPI 1033748777	3 hospitals	7 groups	Contacts
Thomas Robert Calkins, MDNPI 1720037518	1 hospital	3 groups	Contacts
Hsu-Hsiang Chang, DONPI 1932546603	3 hospitals	6 groups	Contacts
Tony K. Chow, MDNPI 1154340578	2 hospitals	4 groups	Contacts
Jon Frederick Cline, MDNPI 1679505622	2 hospitals	2 groups	Contacts
Tanya M. Dall, MDNPI 1932563533	3 hospitals	5 groups	Contacts
William Randolph Dodge IINPI 1588640312	1 hospital	2 groups	Contacts
Justin Cole EvansNPI 1235507724	3 hospitals	5 groups	Contacts
Brian Yunon Feng, DONPI 1508245473	1 hospital	3 groups	Contacts
Sanaz Hamidi, MDNPI 1447411566	4 hospitals	4 groups	Contacts
Daniel Joseph Inglish, DONPI 1326294844	3 hospitals	11 groups	Contacts
Ramon Waddell Johnson, MDNPI 1861426629	-	-	Contacts
Harold K. Kim, MDNPI 1841405909	7 hospitals	10 groups	Contacts
Kenneth T. Kwon, MDNPI 1851319503	-	2 groups	Contacts
Gregory William Lampe, MDNPI 1902839863	-	2 groups	Contacts
John B. Lee, MDNPI 1538178272	3 hospitals	2 groups	Contacts
Guisou MahmoudNPI 1164435996	2 hospitals	3 groups	Contacts
Corry Edward McDonald, MDNPI 1558820795	2 hospitals	4 groups	Contacts
Patrick Osak, DONPI 1154827814	2 hospitals	3 groups	Contacts
Mark I. Paulsen, MDNPI 1588078448	2 hospitals	3 groups	Contacts
Zachary James PerryNPI 1154193761	2 hospitals	2 groups	Contacts
James Blair Price, MDNPI 1417980244	2 hospitals	2 groups	Contacts
Jeffrey Alan Rey, MDNPI 1477587327	1 hospital	2 groups	Contacts
Robert Edward Rigby, DONPI 1831651231	2 hospitals	2 groups	Contacts
Michael Steven Ritter, MDNPI 1295769156	2 hospitals	2 groups	Contacts
Alan C. Rupp, DONPI 1558990705	4 hospitals	5 groups	Contacts
Dina Seif, MDNPI 1598904641	2 hospitals	1 group	Contacts
Maximiliano Renzo Sobrero, MDNPI 1962934893	5 hospitals	6 groups	Contacts
Eric Theodore Teacher, MDNPI 1033352984	5 hospitals	6 groups	Contacts

The list shows the 32 emergency medicine physicians with a public profile. The other 2 are counted in the total and searchable with a free account.

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

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Dmand AI has the EHR for 32 of 34 Mission Viejo emergency medicine physicians, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

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Vituity has the most emergency medicine physicians in Mission Viejo, with 9

Southern California Permanente Medical Group is second with 4, and Pacific Coast Emergency Medical Associates, Inc. third with 3. Counts are emergency medicine physicians with a California address linked to each group.

Medical groups with the most emergency medicine physicians in Mission Viejo
#	Medical group	Parent organization	Emergency medicine physicians
1	VituityModesto	Parent on file	9
2	Southern California Permanente Medical GroupPasaden	Parent on file	4
3	Pacific Coast Emergency Medical Associates, Inc.Long Beach	-	3
4	Comprehensive ER CarePlacentia	-	2
5	Western Sierra Emergency Physicians Medical GroupLake Arrowhead	-	2
6	UCI Health PhysiciansOrange	Parent on file	2
7	Mountains Community HospitalLake Arrowhead	Parent on file	2
8	Loma Linda University Faculty Medical Group (LLUFMG)Los Angeles	Parent on file	1
9	County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health ClinicSan Jose	Parent on file	1
10	Napa Valley Emergency Medical GroupSonoma	Parent on file	1

Top 10 of 29 Mission Viejo medical groups with an emergency medicine physician

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

Providence Mission Hospital has the most affiliated emergency medicine physicians in Mission Viejo, with 21

Loma Linda University Medical Center is second with 3, and Pomona Valley Hospital Medical Center third with 2. Mission Viejo emergency medicine physicians are affiliated with 20 hospitals in all.

Hospitals with the most emergency medicine physicians in Mission Viejo
#	Hospital	Health system	Emergency medicine physicians
1	Providence Mission HospitalMission Viejo	Providence	21
2	Loma Linda University Medical CenterLoma Linda	Seventh-day Adventist Church	3
3	Pomona Valley Hospital Medical CenterPomona	Pomona Valley Hospital Medical Center	2
4	UCI Health - OrangeOrange	UC Irvine	2
5	Riverside Community HospitalRiverside	HCA Healthcare	1
6	Oakland Medical CenterOakland	Kaiser Permanente	1
7	Parkview Community Hospital Medical CenterRiverside	AHMC Healthcare	1
8	USC Verdugo Hills HospitalGlendale	University of Southern California	1
9	Sharp Tri-City Medical CenterOceanside	Sharp HealthCare	1
10	Southern California Hospital at HollywoodHollywood	Healthcare Systems of America	1

Top 10 of 20 Mission Viejo hospitals with an affiliated emergency medicine physician

See every hospital and group for each Mission Viejo emergency medicine physician

Each public profile names one place an emergency medicine physician practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Most Mission Viejo emergency medicine physicians practice at a hospital: 29 of the 29 with a mapped site

An emergency medicine physician can practice at several kinds of site, so the shares overlap.

Mission Viejo emergency medicine physicians by site of care

Hospitals29100%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

14% of Mission Viejo emergency medicine physicians finished medical school 30 or more years ago

4 of the 28 Mission Viejo emergency medicine physicians with a graduation year on file. 7 graduated in the last 10 years.

Physicians by years since medical school

Under 10 years ago725%
10 to 19 years ago1036%
20 to 29 years ago725%
30 to 39 years ago414%
40 or more years ago00%

Source: Dmand AI Professional Profile Data

Every Mission Viejo emergency medicine physician profile shows current hospitals and groups, Medicare activity and NPI details

Primary practiceThe main place they practice, with its type and cityOn every profile
Every site of careEach hospital, clinic and group where they practice nowWith a free account
EmployerThe organization they work for, when one is on fileWith a free account
Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
EHR in useThe EHR at each site where they practiceWith a free account
Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Mission Viejo emergency medicine physician directory

Sources for the data on this page
Data on this page	Source
HCPs, types and specialties	NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groups	Dmand AI Affiliation Data
Medical school graduation year	Dmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracy Remove my information

Emergency medicine physicians are HCPs whose primary specialty is emergency medicine (taxonomy code 207P00000X), with an active NPI and a Mission Viejo practice address.

FAQ

Frequently asked questions about emergency medicine physicians in Mission Viejo

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

How many emergency medicine physicians are in Mission Viejo?

34 emergency medicine physicians have an active NPI, a Mission Viejo practice address and emergency medicine (taxonomy code 207P00000X) as their primary specialty. 31 of them are linked to a hospital or medical group.

Which Mission Viejo medical groups have the most emergency medicine physicians?

Vituity, with 9, followed by Southern California Permanente Medical Group with 4 and Pacific Coast Emergency Medical Associates, Inc. with 3.

Which Mission Viejo hospitals have the most emergency medicine physicians?

Providence Mission Hospital, with 21 affiliated emergency medicine physicians, followed by Loma Linda University Medical Center with 3 and Pomona Valley Hospital Medical Center with 2.

What share of Mission Viejo emergency medicine physicians practice at a hospital?

29 of the 29 Mission Viejo emergency medicine physicians with a mapped site of care, or 100%, have a current hospital affiliation.

What is the taxonomy code for emergency medicine?

207P00000X is the NPPES taxonomy code for emergency medicine. Sub-specialties with their own code are counted on their own lists.

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