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Dr. Mark Todd Leibowitz, MD
NPI1144352907
- Publications
- 3
- Clinical trials
- 10
- Industry payments
- $4,928
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 2600 Redondo Ave, Long Beach, CA 90806-2325
- Practice phone
- Call (562) 304-1742
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Leibowitz'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 Todd Leibowitz is an internist in Long Beach, California
Dr. Leibowitz practices in Long Beach, California.
Dr. Leibowitz's NPI, 1144352907, was assigned on March 9, 2007. Dr. Leibowitz holds California license C41646.
NPI and contact details
- NPI
- 1144352907NPI Registry (opens in a new tab)
- NPI enumeration date
- March 9, 2007
- NPI status
- Active
- Practice phone
- (562) 304-1742
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Mark Todd Leibowitz's practice address is in Long Beach, California
Dr. Leibowitz's practice address in the NPI Registry is 2600 Redondo Ave, Long Beach, CA 90806-2325. The practice phone is (562) 304-1742.
- NPI Registry address2600 Redondo Ave, Long Beach, CA 90806-2325Phone(562) 304-1742
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Mark Todd Leibowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leibowitz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Leibowitz's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Todd Leibowitz is one of 16,751 internists in California
Internal medicine is Dr. Leibowitz's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Leibowitz is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Leibowitz
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 Todd Leibowitz has 3 publications on record
Dmand AI links 3 papers to Dr. Leibowitz in 2014. The most frequent topics are Double-Blind Method, Polysomnography and Sleep Stages. Dr. Leibowitz has published most often in J Clin Psychopharmacol. Dr. Leibowitz's most frequent co-authors are James Michael Andry, MD, Sandy A. Furey, MD and Steven Glen Hull, MD.
Papers3
Topics Dr. Leibowitz writes about most
- Double-Blind Method
- Polysomnography
- Sleep Stages
Dr. Leibowitz's most frequent co-authors
- James Michael Andry, MD1 shared paper
- Sandy A. Furey, MD1 shared paper
- Steven Glen Hull, MD1 shared paper
Recent publications by Dr. Leibowitz
J Clin Psychopharmacol
Asymptomatic DiseasesDouble-Blind MethodHealthy Volunteers
J Clin Psychopharmacol
Adrenergic Uptake InhibitorsArea Under CurveAtomoxetine Hydrochloride
See who Dr. Leibowitz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leibowitz works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Todd Leibowitz has worked on 10 clinical trials
Dmand AI links Dr. Leibowitz to 10 clinical trials. 1 is still active or recruiting. Conditions studied include Diabetes Mellitus, Type 2, Diabetes Mellitus and Alzheimer Disease. Eli Lilly and Company sponsors the most, 7. Open Payments lists research payments to Dr. Leibowitz that name 7 trials.
Conditions in Dr. Leibowitz's trials
- Diabetes Mellitus, Type 2
- Diabetes Mellitus
- Alzheimer Disease
- Migraine Disorders
- Motor Activity
Investigators on the most trials with Dr. Leibowitz
- Julio Rosenstock, MD6 shared trials
- Anuj Bhargava, MD4 shared trials
- Juan Pablo Frias, MD4 shared trials
Recent clinical trials with Dr. Leibowitz
Clinical Investigation for the Preview® hCG Urine/Serum Combo Pregnancy Test (opens in a new tab)
Completed
Predicate DeviceTest Device-Cassette FormatTest Device-Strip Format
SUVN-502 With Donepezil and Memantine for the Treatment of Moderate Alzheimer's Disease- Phase 2a Study (opens in a new tab)
CompletedPhase 2
Alzheimer DiseaseTauopathiesDonepezilMemantineSUVN-502
Severe Acute Respiratory SyndromeCOVID-19SARS-CoV-2 rS/Matrix-M1 Adjuvant (Booster Vaccination)SARS-CoV-2 rS/Matrix-M1 Adjuvant (Crossover Vaccination period)SARS-CoV-2 rS/Matrix-M1 Adjuvant (Initial Vaccination Period)
A Study of Tirzepatide Compared With Intensified Conventional Care in Adult Participants With Type 2 Diabetes (opens in a new tab)
Active, not recruiting
Diabetes Mellitus, Type 2Diabetes MellitusTirzepatideAntihyperglycemic medication
$741 in research paymentsDiabetes Mellitus, Type 2Diabetes MellitusOrforglipronSemaglutide
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Mark Todd Leibowitz received $4,928 in industry payments from 2019 to 2023
CMS Open Payments shows 24 general payments to Dr. Leibowitz from 4 drug and device companies from 2019 to 2023. Travel and lodging make up the largest share, 73% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,321. It also lists 21 research payments totaling $98,282 from 2020 to 2024, naming 7 clinical trials.
General payments to Dr. Leibowitz by program year, 2019 to 2023
General payments to Dr. Leibowitz by kind, 2019 to 2023
$4.9Kin total
- Travel and lodging$3,57773%
- Food and beverage$1,10022%
- Consulting fees$2004%
- Education$321%
- Gifts$200%
Companies that paid Dr. Leibowitz the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark Todd Leibowitz'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Todd Leibowitz
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 Todd Leibowitz's NPI number?
Dr. Mark Todd Leibowitz's NPI number is 1144352907. It was assigned on March 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Todd Leibowitz?
Dr. Mark Todd Leibowitz is an internist in Long Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Todd Leibowitz practice?
Dr. Leibowitz practices at 2600 Redondo Ave, Long Beach, CA 90806-2325.
What is Dr. Mark Todd Leibowitz's office phone number?
The practice phone on file for Dr. Leibowitz is (562) 304-1742.
What is Dr. Mark Todd Leibowitz's medical license number?
Dr. Leibowitz holds California license C41646.
Has Dr. Mark Todd Leibowitz received payments from drug or device companies?
CMS Open Payments shows $4,928 in general payments to Dr. Leibowitz from 4 companies from 2019 to 2023. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mark Todd Leibowitz been practicing?
Dr. Leibowitz's NPI was assigned in 2007.
Does Dr. Mark Todd Leibowitz do research?
Dmand AI links 3 publications to Dr. Leibowitz. Dr. Leibowitz has worked on 10 clinical trials.
Who does Dr. Mark Todd Leibowitz publish with?
Dr. Leibowitz's most frequent co-authors are James Michael Andry, MD (1 shared paper), Sandy A. Furey, MD (1 shared paper) and Steven Glen Hull, MD (1 shared paper).
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