Internists in Los Alamitos, CA

  • Internal medicine
  • Los Alamitos, California
Internists
30
Linked to a hospital or group
25
Hospitals with an internist
15
Medical groups with an internist
30
Practice at a hospital
21

There are 30 internists in Los Alamitos. Corona Hospitalist Medical Group, Inc. has the most, 2, and UCI Health - Orange has the most affiliated internists, 19. 36% finished medical school 30 or more years ago.

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Los Alamitos internists, listed A to Z by last name

Each internist on the list has internal medicine as their primary specialty and a Los Alamitos 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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Sort and filter all 30 Los Alamitos internists by hospital, medical group, the EHR they use and Medicare volume in Dmand AI.

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Los Alamitos internists, A to Z
InternistHospitalsMedical groupsEmail and phone
Etsegenet T. Ayele, MDNPI 15887527781 hospital1 groupContacts
Ahmed Ie Badr, MDNPI 15088182533 hospitals1 groupContacts
Hichang J. Choi, MDNPI 12453082382 hospitals-Contacts
Alexandra A. Chrysanthis, MDNPI 15887349743 hospitals1 groupContacts
Winston Chung, MDNPI 18513220852 hospitals2 groupsContacts
Shahryar Davari, MDNPI 13462443735 hospitals1 groupContacts
Larry A. Drum, MDNPI 1316018112-1 groupContacts
Brenda C. Eiser, MDNPI 1215164181-1 groupContacts
Jason Matthew Fletcher, DONPI 14878101313 hospitals4 groupsContacts
Saloni Pankaj Kadakia, DONPI 10537801894 hospitals1 groupContacts
Stela Georgieva Kostova-Abadjieva, MDNPI 11647912651 hospital2 groupsContacts
Robert Melikian, MDNPI 18119310173 hospitals-Contacts
Ronald E. Pepitone Jr., MDNPI 1063489128-1 groupContacts
Ronaldo Violeta Roque, MDNPI 19323971894 hospitals-Contacts
Melissa A. Rosenthal, MDNPI 1841359585-2 groupsContacts
Bardia Sadr, MDNPI 19123987853 hospitals8 groupsContacts
Najmul Islam SiddiqiNPI 14070039163 hospitals2 groupsContacts
Rohini Singh, DONPI 16494876205 hospitals1 groupContacts
Susan M. Sleep, MDNPI 17504588164 hospitals2 groupsContacts
Zena Taraporewalla, DONPI 16398191621 hospital2 groupsContacts
Ky Minh Tran, MDNPI 10533132702 hospitals-Contacts
Mark Chung-Hsun Tsai, MDNPI 12250331113 hospitals-Contacts
Han Vo, MDNPI 17901701732 hospitals2 groupsContacts
Lei Thandar Win, MDNPI 11244360014 hospitals6 groupsContacts
Petra A. Wong, MDNPI 15785859152 hospitals2 groupsContacts

The list shows the 25 internists 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

For health IT teams

Find Los Alamitos internists by the EHR they use

Dmand AI has the EHR for 22 of 30 Los Alamitos internists, 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.

Corona Hospitalist Medical Group, Inc. has the most internists in Los Alamitos, with 2

ProHealth Partners is second with 2, and CareConnectMD third with 2. Counts are internists with a California address linked to each group.

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

UCI Health - Orange has the most affiliated internists in Los Alamitos, with 19

Long Beach Medical Center is second with 10, and UCI Health - Los Alamitos third with 9. Los Alamitos internists are affiliated with 15 hospitals in all.

Hospitals with the most internists in Los Alamitos
#HospitalHealth systemInternists
1UCI Health - OrangeOrangeUC Irvine19
2Long Beach Medical CenterLong BeachMemorialCare Health System10
3UCI Health - Los AlamitosLos AlamitosUC Irvine9
4UCI Health - LakewoodLakewoodUC Irvine4
5Providence St. Joseph Hospital OrangeOrangeProvidence2
6AHMC Anaheim Regional Medical CenterAnaheimAHMC Healthcare2
7West Anaheim Medical CenterAnaheimPrime Healthcare2
8La Palma Intercommunity HospitalLa PalmaPrime Healthcare2
9MemorialCare Saddleback Medical CenterLaguna HillsMemorialCare Health System2
10Orange Coast Medical CenterFountain ValleyMemorialCare Health System2

Top 10 of 15 Los Alamitos hospitals with an affiliated internist

See every hospital and group for each Los Alamitos internist

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Source: Dmand AI Affiliation Data

Most Los Alamitos internists practice at a hospital: 21 of the 24 with a mapped site

18 also practice at a medical group site, and 12 at home health agencies. An internist can practice at several kinds of site, so the shares overlap.

Los Alamitos internists by site of care

  1. Hospitals21
  2. Medical group practices18
  3. Home health agencies12
  4. Physician offices10
  5. Skilled nursing facilities8

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

36% of Los Alamitos internists finished medical school 30 or more years ago

8 of the 22 Los Alamitos internists with a graduation year on file. 1 graduated in the last 10 years, fewer than graduated 40 or more years ago.

Physicians by years since medical school

  1. Under 10 years ago1
  2. 10 to 19 years ago4
  3. 20 to 29 years ago9
  4. 30 to 39 years ago5
  5. 40 or more years ago3

Source: Dmand AI Professional Profile Data

Every Los Alamitos 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 Los Alamitos internist directory

Sources for the data on this page
Data on this pageSource
HCPs, types and specialtiesNPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groupsDmand AI Affiliation Data
Medical school graduation yearDmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracyRemove my information

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

FAQ

Frequently asked questions about internists in Los Alamitos

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 Los Alamitos?

30 internists have an active NPI, a Los Alamitos practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 25 of them are linked to a hospital or medical group.

Which Los Alamitos medical groups have the most internists?

Corona Hospitalist Medical Group, Inc., with 2, followed by ProHealth Partners with 2 and CareConnectMD with 2.

Which Los Alamitos hospitals have the most internists?

UCI Health - Orange, with 19 affiliated internists, followed by Long Beach Medical Center with 10 and UCI Health - Los Alamitos with 9.

What share of Los Alamitos internists practice at a hospital?

21 of the 24 Los Alamitos internists with a mapped site of care, or 88%, 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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Search 30 Los Alamitos internists by hospital, medical group and the EHR they use, with validated work emails and mobile numbers.

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