Updated October 2026

Neurosurgeons in Los Angeles, CA

Neurological surgery
Los Angeles, California

Neurosurgeons: 85
Linked to a hospital or group: 72
Hospitals with a neurosurgeon: 33
Medical groups with a neurosurgeon: 22
Practice at a hospital: 57

There are 85 neurosurgeons in Los Angeles. UCLA Neurosurgery Associates has the most, 20, and Ronald Reagan UCLA Medical Center has the most affiliated neurosurgeons, 18. 27% finished medical school 30 or more years ago.

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Los Angeles neurosurgeons, listed A to Z by last name

Each neurosurgeon on the list has neurological surgery as their primary specialty and a Los Angeles 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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Los Angeles neurosurgeons, A to Z
Neurosurgeon	Hospitals	Medical groups	Email and phone
Arun P. Amar, MDNPI 1447348032	2 hospitals	1 group	Contacts
Frank Joseph Attenello III, MD, MSNPI 1386818227	4 hospitals	1 group	Contacts
Diane AumNPI 1154816163	1 hospital	1 group	Contacts
James Ivan Ausman, MDNPI 1902919160	-	-	Contacts
Ausaf Ahmad Bari, MD, PhDNPI 1437392776	2 hospitals	1 group	Contacts
Zachary Rollins BarnardNPI 1306216726	5 hospitals	2 groups	Contacts
Ulrich Batzdorf, MDNPI 1801811047	-	1 group	Contacts
Alexander Becker, MDNPI 1205377652	1 hospital	1 group	Contacts
Marvin Bergsneider, MDNPI 1174502629	1 hospital	1 group	Contacts
Erik Carmen Brown, MD, PhDNPI 1396130100	-	1 group	Contacts
Andrew Summey Brunswick, MDNPI 1578823407	1 hospital	2 groups	Contacts
Jin Yop Stephano Chang, MD, PhDNPI 1760182281	2 hospitals	2 groups	Contacts
Alexander George Chartrain, MDNPI 1043708860	1 hospital	2 groups	Contacts
Thomas C. Chen, MD, PhDNPI 1225071509	4 hospitals	2 groups	Contacts
Srinivas Chivukula, MDNPI 1396163689	-	2 groups	Contacts
Frances Elaine Chow, MDNPI 1063830735	3 hospitals	2 groups	Contacts
Geoffrey P. Colby, MD, PhDNPI 1144373739	4 hospitals	4 groups	Contacts
Virendra Rajendrakumar Desai, MDNPI 1497016182	1 hospital	1 group	Contacts
Antonio A. De Salles, MDNPI 1821009598	-	-	Contacts
Michael J. Dorsi, MDNPI 1942355854	4 hospitals	2 groups	Contacts
Susan Renee Durham, MDNPI 1619985033	1 hospital	1 group	Contacts
Alan S. EdelmanNPI 1699886903	-	-	Contacts
Darian Ross Esfahani, MD, MPHNPI 1760757132	-	1 group	Contacts
Richard George Everson, MDNPI 1467742213	3 hospitals	1 group	Contacts
Andrew Joseph Fabiano, MDNPI 1144543455	1 hospital	1 group	Contacts
Aria Fallah, MD, MSNPI 1376950477	2 hospitals	1 group	Contacts
Robert A. Fenstermaker, MDNPI 1376549683	1 hospital	1 group	Contacts
John Gordon Frazee, MDNPI 1255412300	-	-	Contacts
Itzhak Fried, MDNPI 1093726788	-	1 group	Contacts
Tatsuhiro Fujii, MDNPI 1538605241	3 hospitals	1 group	Contacts
Patrik Gabikian, MDNPI 1790895639	2 hospitals	1 group	Contacts
Steven Louis Giannotta, MDNPI 1114978871	1 hospital	1 group	Contacts
John Peter Gruen, MDNPI 1194769570	-	1 group	Contacts
Todd Lee Harshbarger, MDNPI 1366649089	-	1 group	Contacts
Daniel Hirt, MDNPI 1427347210	-	1 group	Contacts
John J. Holly, MDNPI 1851490387	-	-	Contacts
Langston Tyler Holly, MDNPI 1063437192	2 hospitals	1 group	Contacts
Ben HopkinsNPI 1235504911	1 hospital	-	Contacts
Patrick C. Hsieh, MDNPI 1942405956	2 hospitals	1 group	Contacts
Jeremiah Nicholas Johnson, MDNPI 1124220231	4 hospitals	1 group	Contacts
Ari D. Kappel, MDNPI 1114424116	2 hospitals	2 groups	Contacts
Leila Khorasani, MDNPI 1861594574	1 hospital	2 groups	Contacts
Won KimNPI 1508022997	2 hospitals	1 group	Contacts
Mark D. Krieger, MDNPI 1346333846	1 hospital	1 group	Contacts
Carolyn LaiNPI 1891281754	-	-	Contacts
Jorge Antonio Lazareff, MDNPI 1073538112	-	-	Contacts
Brian Lee, MDNPI 1497088637	5 hospitals	4 groups	Contacts
Darrin J. Lee, MDNPI 1558694273	5 hospitals	4 groups	Contacts
Jae Eun Lee, MDNPI 1164124491	1 hospital	-	Contacts
Sun H. Lee, MDNPI 1851400451	1 hospital	1 group	Contacts

Showing 1 to 50 of 80 Los Angeles neurosurgeons

The list shows the 80 neurosurgeons with a public profile. The other 5 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 82 of 85 Los Angeles neurosurgeons, 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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UCLA Neurosurgery Associates has the most neurosurgeons in Los Angeles, with 20

USC Care Medical Group is second with 17, and Southern California Permanente Medical Group third with 9. Counts are neurosurgeons with a California address linked to each group.

Medical groups with the most neurosurgeons in Los Angeles
#	Medical group	Parent organization	Neurosurgeons
1	UCLA Neurosurgery AssociatesLos Angeles	Parent on file	20
2	USC Care Medical GroupLos Angeles	Parent on file	17
3	Southern California Permanente Medical GroupPasaden	Parent on file	9
4	Children's Hospital Los Angeles Medical GroupLos Angeles	Parent on file	5
5	Kern MedicalBakersfield	Parent on file	2
6	Kaweah Health Cardiothoracic Surgery ClinicVisalia	Parent on file	2
7	Greater Modesto Medical Surgical AssociatesModesto	Parent on file	2
8	UCLA NeurologyLos Angeles	Parent on file	1
9	Harbor-UCLA Medical CenterTorrance	Parent on file	1
10	UCI Health PhysiciansOrange	Parent on file	1

Top 10 of 22 Los Angeles medical groups with a neurosurgeon

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

Ronald Reagan UCLA Medical Center has the most affiliated neurosurgeons in Los Angeles, with 18

UCLA Santa Monica Medical Center is second with 14, and Keck Hospital of USC third with 14. Los Angeles neurosurgeons are affiliated with 33 hospitals in all.

Hospitals with the most neurosurgeons in Los Angeles
#	Hospital	Health system	Neurosurgeons
1	Ronald Reagan UCLA Medical CenterLos Angeles	University of California Health	18
2	UCLA Santa Monica Medical CenterSanta Monica	University of California Health	14
3	Keck Hospital of USCLos Angeles	University of Southern California	14
4	Los Angeles General Medical CenterLos Angeles	County of Los Angeles	11
5	USC Verdugo Hills HospitalGlendale	University of Southern California	6
6	USC Arcadia HospitalArcadia	University of Southern California	5
7	Children's Hospital Los AngelesLos Angeles	Children's Hospital Los Angeles	5
8	Kaiser Permanente Los Angeles Medical CenterLos Angeles	Kaiser Permanente	4
9	Harbor-UCLA Medical CenterTorrance	County of Los Angeles	4
10	UCLA West Valley Medical CenterWest Hills	University of California Health	4

Top 10 of 33 Los Angeles hospitals with an affiliated neurosurgeonAll 24 Los Angeles hospitals

See every hospital and group for each Los Angeles neurosurgeon

Each public profile names one place a neurosurgeon 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 Los Angeles neurosurgeons practice at a hospital: 57 of the 69 with a mapped site

44 also practice at a medical group site, and 13 at urgent care centers. A neurosurgeon can practice at several kinds of site, so the shares overlap.

Los Angeles neurosurgeons by site of care

Hospitals5783%
Medical group practices4464%
Urgent care centers1319%
Physician offices69%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

27% of Los Angeles neurosurgeons finished medical school 30 or more years ago

16 of the 60 Los Angeles neurosurgeons with a graduation year on file. 7 graduated in the last 10 years.

Physicians by years since medical school

Under 10 years ago712%
10 to 19 years ago2338%
20 to 29 years ago1423%
30 to 39 years ago915%
40 or more years ago712%

Source: Dmand AI Professional Profile Data

Every Los Angeles neurosurgeon 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 Los Angeles neurosurgeon 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

Neurosurgeons are HCPs whose primary specialty is neurological surgery (taxonomy code 207T00000X), with an active NPI and a Los Angeles practice address.

FAQ

Frequently asked questions about neurosurgeons in Los Angeles

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

How many neurosurgeons are in Los Angeles?

85 neurosurgeons have an active NPI, a Los Angeles practice address and neurological surgery (taxonomy code 207T00000X) as their primary specialty. 72 of them are linked to a hospital or medical group.

Which Los Angeles medical groups have the most neurosurgeons?

UCLA Neurosurgery Associates, with 20, followed by USC Care Medical Group with 17 and Southern California Permanente Medical Group with 9.

Which Los Angeles hospitals have the most neurosurgeons?

Ronald Reagan UCLA Medical Center, with 18 affiliated neurosurgeons, followed by UCLA Santa Monica Medical Center with 14 and Keck Hospital of USC with 14.

What share of Los Angeles neurosurgeons practice at a hospital?

57 of the 69 Los Angeles neurosurgeons with a mapped site of care, or 83%, have a current hospital affiliation.

What is the taxonomy code for neurological surgery?

207T00000X is the NPPES taxonomy code for neurological surgery. Sub-specialties with their own code are counted on their own lists.

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