Dr. Gabrielle Neumann Horner, MD
- Part D claims, 2024
- 127
- Hospital affiliations
- 3
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2021
- Practice address
- 1250 16th Street, Santa Monica, CA 90404
- Practice phone
- Call (310) 319-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Horner'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. Gabrielle Neumann Horner is a hospitalist in Santa Monica, California
Dr. Horner practices at UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health.
Dr. Horner's NPI, 1396328423, was assigned on May 5, 2021. Dr. Horner graduated from Tufts University School of Medicine in 2021. Dr. Horner holds California license A202152.
- NPI
- 1396328423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901208099
- NPI enumeration date
- May 5, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 319-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gabrielle Neumann Horner practices at UCLA Santa Monica Medical Center in Santa Monica, California
Dr. Horner's primary practice is UCLA Santa Monica Medical Center, at 1250 16th Street, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 319-4000.
- UCLA Santa Monica Medical Center1250 16th Street, Santa Monica, CA 90404 · Los Angeles CountyPhone(310) 319-4000
Source: Dmand AI Affiliation Data
Dr. Gabrielle Neumann Horner is affiliated with 3 sites of care and 2 medical groups
Dr. Horner's primary practice is UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health. Dr. Horner is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Horner to 1 more hospital and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gabrielle Neumann Horner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horner practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCLA Santa Monica Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gabrielle Neumann Horner is one of 3,186 hospitalists in California
Hospitalist is Dr. Horner's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Horner is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Horner
Counts of hospitalists 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. Gabrielle Neumann Horner's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Horner's median patient age at 58, with 48% women.
Dr. Horner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women48%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Gabrielle Neumann Horner wrote 127 Medicare Part D claims in 2024
In 2024, Dr. Horner wrote 127 Medicare Part D claims for 25 patients. 83% of them were for generic drugs. CMS names the drug for 29 of them, across 2 drugs with 11 or more claims each, at $20,056 in total drug cost.
Dr. Horner's Part D claims by kind of drug, 2024
- Generic105 claims83%
- Brand-name22 claims17%
Dr. Horner's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Gabrielle Neumann Horner takes part in Medicare
Dr. Horner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gabrielle Neumann Horner graduated from Tufts University School of Medicine
Dr. Horner graduated from Tufts University School of Medicine in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gabrielle Neumann Horner'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Gabrielle Neumann Horner
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. Gabrielle Neumann Horner's NPI number?
Dr. Gabrielle Neumann Horner's NPI number is 1396328423. It was assigned on May 5, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Gabrielle Neumann Horner?
Dr. Gabrielle Neumann Horner is a hospitalist in Santa Monica, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Gabrielle Neumann Horner practice?
Dr. Horner practices at 1250 16th Street, Santa Monica, CA 90404. Dr. Horner's primary practice is UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health. Dmand AI also links Dr. Horner to 1 hospital and 1 medical group.
What is Dr. Gabrielle Neumann Horner's office phone number?
The practice phone on file for Dr. Horner is (310) 319-4000.
What is Dr. Gabrielle Neumann Horner's medical license number?
Dr. Horner holds California license A202152.
Which hospitals is Dr. Gabrielle Neumann Horner affiliated with?
Dr. Horner practices at UCLA Santa Monica Medical Center in Santa Monica, California. Dr. Horner is also affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Horner to 1 more hospital.
What medical group is Dr. Gabrielle Neumann Horner part of?
Dr. Horner is linked to UCLA Medical Group. Dmand AI links Dr. Horner to 1 more medical group.
Does Dr. Gabrielle Neumann Horner accept Medicare?
Yes. CMS lists Dr. Horner as accepting Medicare assignment.
Where did Dr. Gabrielle Neumann Horner go to medical school?
Dr. Horner graduated from Tufts University School of Medicine in 2021.
What drugs does Dr. Gabrielle Neumann Horner prescribe most?
In 2024 Medicare Part D data, Dr. Horner's most prescribed drugs by claims were Atorvastatin Calcium and Creon.
How long has Dr. Gabrielle Neumann Horner been practicing?
Dr. Horner graduated from medical school in 2021, 5 years ago.
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