Updated October 2026

Internists in Laguna Hills, CA

Internal medicine
Laguna Hills, California

Internists: 75
Linked to a hospital or group: 65
Hospitals with an internist: 10
Medical groups with an internist: 25
Practice at a hospital: 53

There are 75 internists in Laguna Hills. MemorialCare Medical Group has the most, 19, and MemorialCare Saddleback Medical Center has the most affiliated internists, 49. 55% finished medical school 30 or more years ago.

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Laguna Hills internists, listed A to Z by last name

Each internist on the list has internal medicine as their primary specialty and a Laguna Hills 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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Laguna Hills internists, A to Z
Internist	Hospitals	Medical groups	Email and phone
Mozhgan Ashtari, MDNPI 1558691451	3 hospitals	4 groups	Contacts
Angela Pham Basen, MDNPI 1639514144	3 hospitals	1 group	Contacts
Michael Kraig Benefiel, MDNPI 1861855827	1 hospital	1 group	Contacts
Paul Finn Cassedy, MDNPI 1417159948	1 hospital	-	Contacts
Lawrence Chung-Lun Chang, MDNPI 1528046430	2 hospitals	-	Contacts
Ziad Wagih Chaya, DONPI 1528420510	1 hospital	1 group	Contacts
Christopher Ryan ChenNPI 1700312840	2 hospitals	1 group	Contacts
Naomi B. Cheung, MDNPI 1073503314	-	3 groups	Contacts
Lori Lynn ClarkNPI 1972634897	3 hospitals	2 groups	Contacts
Arthur J. Daigneault, MDNPI 1609845361	3 hospitals	3 groups	Contacts
Shahin Delkhah, MDNPI 1265477749	3 hospitals	4 groups	Contacts
Marwan Edris, MDNPI 1013045970	2 hospitals	1 group	Contacts
Raymond C. Fernandez, MDNPI 1629039532	-	-	Contacts
Ali Ghazvini, MDNPI 1104865153	1 hospital	2 groups	Contacts
Ellen D. Gim, MDNPI 1861596223	2 hospitals	1 group	Contacts
Leighe Grotenhuis, MDNPI 1720466618	-	1 group	Contacts
Humaira Hassan, MDNPI 1932293198	-	1 group	Contacts
Brian L. HenryNPI 1629047824	3 hospitals	3 groups	Contacts
Warren Chilun Hung, MDNPI 1770621260	2 hospitals	-	Contacts
David G. Huseby, MDNPI 1164552717	2 hospitals	2 groups	Contacts
Amar A. Kadakia, MDNPI 1649386210	1 hospital	3 groups	Contacts
Benhoor Khalpari, MDNPI 1689762197	1 hospital	2 groups	Contacts
Yong-Sik Kim, MDNPI 1033317565	1 hospital	3 groups	Contacts
Mae Kinaly, MDNPI 1275566085	1 hospital	-	Contacts
Sonja Stumme Krafcik, MDNPI 1598767170	3 hospitals	1 group	Contacts
Mohana Shivram Kulkarni, MDNPI 1457419236	2 hospitals	3 groups	Contacts
Nathan Tin Yoi Kwong, MDNPI 1437654340	1 hospital	2 groups	Contacts
Robert Peter Lazatin, MDNPI 1700865755	-	1 group	Contacts
Homer Kam Yun Lew, DONPI 1154452142	3 hospitals	2 groups	Contacts
Chi-Whei Lin, MDNPI 1114057254	1 hospital	1 group	Contacts
Arthur Ellis Lipper, MDNPI 1811062649	1 hospital	-	Contacts
Jun Liu, MDNPI 1770669319	1 hospital	5 groups	Contacts
Evelyne N. Llorente, MDNPI 1306926423	2 hospitals	1 group	Contacts
Alan Y. Lo, MDNPI 1982683637	3 hospitals	1 group	Contacts
Lawrence Joseph Luppi, MDNPI 1952356727	-	1 group	Contacts
Kimia Mahan, MDNPI 1669000493	1 hospital	-	Contacts
Katherine Manasson, MDNPI 1538178611	2 hospitals	1 group	Contacts
Julie A. Marshburn, MDNPI 1154507192	-	1 group	Contacts
Nermine Morcos-Clark, MDNPI 1447381439	2 hospitals	2 groups	Contacts
Kimberly Lyn Motta, MDNPI 1770672123	1 hospital	1 group	Contacts
Bijan Movafegh-Jooryabi, DONPI 1497760219	1 hospital	1 group	Contacts
Eric M. Munro, MDNPI 1932263183	2 hospitals	-	Contacts
David Nah, DONPI 1477847127	-	1 group	Contacts
Stanley NguyenNPI 1164954145	1 hospital	1 group	Contacts
Elizabeth Ann Nieto, MDNPI 1689020760	-	2 groups	Contacts
Bindu Noor, FACP, MDNPI 1386602571	-	1 group	Contacts
Simon G. Outhwaite, MDNPI 1851402002	1 hospital	1 group	Contacts
Faramarz Payandeh, MDNPI 1346250701	1 hospital	1 group	Contacts
Phuong-Chi Thi Phan, MDNPI 1063478402	1 hospital	1 group	Contacts
Ivan Rudenko, MDNPI 1477040517	2 hospitals	1 group	Contacts

Showing 1 to 50 of 67 Laguna Hills internists

The list shows the 67 internists with a public profile. The other 8 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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MemorialCare Medical Group has the most internists in Laguna Hills, with 19

Saddleback Medical Group is second with 15, and Optum - Downtown Los Angeles third with 14. Counts are internists with a California address linked to each group.

Medical groups with the most internists in Laguna Hills
#	Medical group	Parent organization	Internists
1	MemorialCare Medical GroupFountain Valley	Parent on file	19
2	Saddleback Medical GroupLaguna Hills	-	15
3	Optum - Downtown Los AngelesLos Angeles	Parent on file	14
4	OptumCare Medical GroupLos Alamitos	Parent on file	6
5	UCI HealthOrange	Parent on file	3
6	Paloma Medical GroupSan Juan Capistrano	-	3
7	Superior Hospitalist Medical GroupLos Angeles	-	2
8	Southern California Permanente Medical GroupPasaden	Parent on file	2
9	UCI Health PhysiciansOrange	Parent on file	2
10	St. Jude Heritage Medical GroupBrea	Parent on file	2

Top 10 of 25 Laguna Hills medical groups with an internist

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

MemorialCare Saddleback Medical Center has the most affiliated internists in Laguna Hills, with 49

Hoag Hospital Newport Beach is second with 19, and Providence Mission Hospital third with 16. Laguna Hills internists are affiliated with 10 hospitals in all.

Hospitals with the most internists in Laguna Hills
#	Hospital	Health system	Internists
1	MemorialCare Saddleback Medical CenterLaguna Hills	MemorialCare Health System	49
2	Hoag Hospital Newport BeachNewport Beach	Hoag Memorial Hospital Presbyterian	19
3	Providence Mission HospitalMission Viejo	Providence	16
4	UCI Health - OrangeOrange	UC Irvine	3
5	Dignity Health - Northridge Hospital Medical CenterNorthridge	CommonSpirit Health	1
6	Torrance Memorial Medical CenterTorrance	Cedars-Sinai Health System	1
7	Providence Little Company of Mary Medical Center TorranceTorrance	Providence	1
8	Cedars-Sinai Medical CenterLos Angeles	Cedars-Sinai Health System	1
9	Orange Coast Medical CenterFountain Valley	MemorialCare Health System	1
10	Providence Cedars-Sinai Tarzana Medical CenterTarzana	Providence	1

Top 10 of 10 Laguna Hills hospitals with an affiliated internist

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Source: Dmand AI Affiliation Data

Most Laguna Hills internists practice at a hospital: 53 of the 62 with a mapped site

44 also practice at a medical group site, and 23 at home health agencies. An internist can practice at several kinds of site, so the shares overlap.

Laguna Hills internists by site of care

Hospitals5385%
Medical group practices4471%
Home health agencies2337%
Physician offices1727%
Ambulatory surgery centers711%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

55% of Laguna Hills internists finished medical school 30 or more years ago

32 of the 58 Laguna Hills internists with a graduation year on file. 6 graduated in the last 10 years, fewer than graduated 40 or more years ago.

Physicians by years since medical school

Under 10 years ago610%
10 to 19 years ago610%
20 to 29 years ago1424%
30 to 39 years ago2441%
40 or more years ago814%

Source: Dmand AI Professional Profile Data

Every Laguna Hills internist 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 Laguna Hills internist 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

Internists are HCPs whose primary specialty is internal medicine (taxonomy code 207R00000X), with an active NPI and a Laguna Hills practice address.

FAQ

Frequently asked questions about internists in Laguna Hills

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

How many internists are in Laguna Hills?

75 internists have an active NPI, a Laguna Hills practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 65 of them are linked to a hospital or medical group.

Which Laguna Hills medical groups have the most internists?

MemorialCare Medical Group, with 19, followed by Saddleback Medical Group with 15 and Optum - Downtown Los Angeles with 14.

Which Laguna Hills hospitals have the most internists?

MemorialCare Saddleback Medical Center, with 49 affiliated internists, followed by Hoag Hospital Newport Beach with 19 and Providence Mission Hospital with 16.

What share of Laguna Hills internists practice at a hospital?

53 of the 62 Laguna Hills internists with a mapped site of care, or 85%, have a current hospital affiliation.

What is the taxonomy code for internal medicine?

207R00000X is the NPPES taxonomy code for internal medicine. Sub-specialties with their own code are counted on their own lists.

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