Dr. Mark S. Horng, MD
- Medical group
- 1
- State licenses
- 2
- Year NPI issued
- 2005
- Practice address
- 11301 Wilshire Blvd, Los Angeles, CA 90073-1003
- Practice phone
- Call (310) 478-3711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Veterans Affairs Medical Center
Hospital · Los Angeles, California
Find Dr. Horng's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark S. Horng is an internist in Los Angeles, California
Dr. Horng practices at Veterans Affairs Medical Center in Los Angeles, California.
Dr. Horng's NPI, 1295739043, was assigned on June 9, 2005. Dr. Horng graduated from UC Irvine School of Medicine in 1998. Dr. Horng's California license number on file is A90098.
- NPI
- 1295739043NPI Registry (opens in a new tab)
- NPI enumeration date
- June 9, 2005
- NPI status
- Active
- Practice phone
- (310) 478-3711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Horng practices at Veterans Affairs Medical Center in Los Angeles, California
Dr. Horng's primary practice is Veterans Affairs Medical Center, at 11301 Wilshire Blvd, Los Angeles, CA 90073-1003. The practice phone is (310) 478-3711.
- Veterans Affairs Medical Center11301 Wilshire Blvd, Los Angeles, CA 90073-1003Phone(310) 478-3711
Source: Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Horng is affiliated with 1 site of care and 1 medical group
Dr. Horng's primary practice is Veterans Affairs Medical Center in Los Angeles, California. Dmand AI also links Dr. Horng to 1 medical group, named with a free account.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark S. Horng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horng practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Veterans Affairs Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark S. Horng is one of 16,751 internists in California
Internal medicine is Dr. Horng's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Horng's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Massachusetts license
Internists near Dr. Horng
Counts of internists 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. Mark S. Horng graduated from UC Irvine School of Medicine
Dr. Horng graduated from UC Irvine School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark S. Horng's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark S. Horng
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. Mark S. Horng's NPI number?
Dr. Mark S. Horng's NPI number is 1295739043. It was assigned on June 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Horng?
Dr. Mark S. Horng is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark S. Horng practice?
Dr. Horng practices at 11301 Wilshire Blvd, Los Angeles, CA 90073-1003. Dr. Horng's primary practice is Veterans Affairs Medical Center in Los Angeles, California. Dmand AI also links Dr. Horng to 1 medical group.
What is Dr. Mark S. Horng's office phone number?
The practice phone on file for Dr. Horng is (310) 478-3711.
What is Dr. Mark S. Horng's medical license number?
Dr. Horng's California license number on file is A90098, one of the licenses on file in 2 states.
Which states has Dr. Mark S. Horng been licensed in?
Dmand AI has state licenses on file for Dr. Horng in California (2005 to 2012) and Massachusetts.
Where did Dr. Mark S. Horng go to medical school?
Dr. Horng graduated from UC Irvine School of Medicine in 1998.
How long has Dr. Mark S. Horng been practicing?
Dr. Horng graduated from medical school in 1998, 28 years ago.
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