J Am Geriatr Soc
Dr. David Bart Reuben, MD
- Medicare services, 2024
- 237
- Medicare patients, 2024
- 70
- Part D claims, 2024
- 541
- Publications
- 180
- Hospital affiliations
- 2
- Practice address
- 200 Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 794-9206
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peter Morton UCLA Medical Building
Los Angeles, California
Find Dr. Reuben'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. David Bart Reuben is a geriatric medicine (internal medicine) physician in Los Angeles, California
Dr. Reuben practices at Peter Morton UCLA Medical Building in Los Angeles, California.
Dr. Reuben's NPI, 1427078690, was assigned on July 20, 2006. Dr. Reuben graduated from Emory School of Medicine in 1977. Dr. Reuben holds California license G66427.
- NPI
- 1427078690NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395748180
- NPI enumeration date
- July 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 794-9206
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Bart Reuben practices at Peter Morton UCLA Medical Building in Los Angeles, California
Dr. Reuben's primary practice is Peter Morton UCLA Medical Building, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 794-9206.
- Peter Morton UCLA Medical Building200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 794-9206
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Bart Reuben is affiliated with 5 sites of care and 1 medical group
Dr. Reuben's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dr. Reuben is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Reuben to 1 more hospital, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Bart Reuben's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Reuben practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peter Morton UCLA Medical Building | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Bart Reuben is one of 497 geriatric medicine (internal medicine) physicians in California
Geriatric medicine is Dr. Reuben's primary specialty in the NPI Registry, under taxonomy code 207RG0300X. Dr. Reuben is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Reuben's licenses on file in 2 states: California and Rhode Island.
Specialties and state licenses
- Geriatric medicine (internal medicine), CaliforniaPrimary
- Rhode Island license
Clinical focus
Dmand AI lists acute skin infection, acute stomach ulcer, alzheimer's disease, arthritis, atrial fibrillation and flutter, bile duct problems, cerebrovascular disease and chronic diabetes among the conditions Dr. Reuben treats.
Geriatric medicine (internal medicine) physicians near Dr. Reuben
Counts of geriatric medicine (internal medicine) physicians 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. David Bart Reuben billed Medicare for 237 services in 2024
CMS data shows 237 Medicare services from Dr. Reuben across 4 procedure codes in 2024, for 70 Medicare patients. Medicare paid $11,535 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Reuben's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2892024: 16443%
- Other services
- 2023: 02024: 73
Dr. Reuben compared with the California median for geriatric medicine (internal medicine) physicians, 2024
- Dr. Reuben
- California median
- Medicare services
- 237vs 42444% below
- Medicare patients
- 70vs 17861% below
- Part D claims
- 237vs 93075% below
Medians across 466 geriatric medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Reuben's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Reuben?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Reuben and other geriatric medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Bart Reuben treated 70 Medicare patients in 2024, average age 86
CMS counts 70 Medicare patients who saw Dr. Reuben in 2024. The largest group is 85 and over, with 40 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.01, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Reuben's median patient age at 86, with 46% women.
Dr. Reuben's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Reuben's Medicare patients by sex, 2024
- Women3144%
- Men3956%
Chronic conditions among Dr. Reuben's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Ischemic heart disease51%
- Depression50%
- Mood disorders50%
- Osteoporosis44%
- Heart failure39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Reuben's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 86
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Bart Reuben wrote 541 Medicare Part D claims in 2024
In 2024, Dr. Reuben wrote 541 Medicare Part D claims for 44 patients. 84% of them were for generic drugs. CMS names the drug for 237 of them, across 15 drugs with 11 or more claims each, at $36,696 in total drug cost. In 2023, CMS named 486 claims across 25 drugs.
Dr. Reuben's Part D claims by kind of drug, 2024
- Generic452 claims84%
- Brand-name and other89 claims16%
Dr. Reuben'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.
Drug classes CMS tracks in Dr. Reuben's Part D claims, 2024
- Opioids2%11 of 541 claims
- Antibiotics4%24 of 541 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4862024: 23751%
Drugs named by CMS: 15 in 2024, 25 in 2023.
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
Dr. David Bart Reuben offers telehealth to Medicare patients
Dr. Reuben accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Reuben as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Bart Reuben has 180 publications on record
Dmand AI links 180 papers to Dr. Reuben, published from 2003 to 2025. 2020 was the busiest year, with 9. The most frequent topics are Geriatrics, Geriatric Assessment and Activities of Daily Living. Dr. Reuben has published most often in J Am Geriatr Soc. Dr. Reuben's most frequent co-authors are Lee Alexandra Jennings, MD, Thomas M. Gill, MD and Joseph Gromer Ouslander, MD.
Dr. Reuben's papers by year, 2016 to 2025
Topics Dr. Reuben writes about most
- Geriatrics
- Geriatric Assessment
- Activities of Daily Living
- Dementia
- Internship and Residency
- Health Status
- Nursing Homes
- Caregivers
Dr. Reuben's most frequent co-authors
- Lee Alexandra Jennings, MD11 shared papers
- Thomas M. Gill, MD9 shared papers
- Joseph Gromer Ouslander, MD9 shared papers
Recent publications by Dr. Reuben
JAMA Health Forum
Contemp Clin Trials
See who Dr. Reuben researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Reuben works with, so you can find a warm path to the right geriatric medicine (internal medicine) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Bart Reuben received $350 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Reuben from 1 drug or device company in 2016. Speaker and faculty fees make up the largest share, 100% of the total. Otsuka Pharmaceutical Development & Commercialization, Inc. paid the most, $350.
Companies that paid Dr. Reuben the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Bart Reuben has 6 awards and honors on record
Dmand AI lists 6 awards for Dr. Reuben, most recently America's Top Doctors in 2014.
Awards and honors for Dr. Reuben
- 2014
- America's Top Doctors
- 2013
- CMS Stage 1 EHR
- Top Doctors:LA Area
- 2012
- Top Doctors:Southern California
- Undated
- Checkbook Top Doc
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. David Bart Reuben graduated from Emory School of Medicine
Dr. Reuben graduated from Emory School of Medicine in 1977.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. David Bart Reuben accepts plans from 7 insurance carriers
Dr. Reuben is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- LA Care
Plan types Dr. Reuben accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. David Bart Reuben'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. David Bart Reuben
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. David Bart Reuben's NPI number?
Dr. David Bart Reuben's NPI number is 1427078690. It was assigned on July 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Bart Reuben?
Dr. David Bart Reuben is a geriatric medicine (internal medicine) physician in Los Angeles, California. The primary specialty in the NPI Registry is Geriatric Medicine (Internal Medicine) Physician (taxonomy code 207RG0300X).
Where does Dr. David Bart Reuben practice?
Dr. Reuben practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Reuben's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dmand AI also links Dr. Reuben to 1 hospital, 1 group practice or clinic and 1 home health agency.
What is Dr. David Bart Reuben's office phone number?
The practice phone on file for Dr. Reuben is (310) 794-9206.
What is Dr. David Bart Reuben's medical license number?
Dr. Reuben holds California license G66427, one of the licenses on file in 2 states.
Which states has Dr. David Bart Reuben been licensed in?
Dmand AI has state licenses on file for Dr. Reuben in California (1989 to 2027) and Rhode Island (1980 to 1990).
Which hospitals is Dr. David Bart Reuben affiliated with?
Dr. Reuben is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Reuben to 1 more hospital.
What medical group is Dr. David Bart Reuben part of?
Dr. Reuben is linked to UCLA Medical Group.
Does Dr. David Bart Reuben accept Medicare?
Yes. CMS data shows Dr. Reuben billed Medicare for 237 services in 2024, and Dr. Reuben accepts Medicare assignment.
Does Dr. David Bart Reuben offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Reuben as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. David Bart Reuben see?
CMS counts 70 Medicare patients who saw Dr. Reuben in 2024, with an average age of 86.
Is Dr. David Bart Reuben board certified?
Yes. Dr. Reuben is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. David Bart Reuben bill to Medicare?
In 2024, Dr. Reuben's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, new patient (99205).
Where did Dr. David Bart Reuben go to medical school?
Dr. Reuben graduated from Emory School of Medicine in 1977.
What drugs does Dr. David Bart Reuben prescribe most?
In 2024 Medicare Part D data, Dr. Reuben's most prescribed drugs by claims were Atorvastatin Calcium, Bupropion XL and Gabapentin.
Has Dr. David Bart Reuben received payments from drug or device companies?
CMS Open Payments shows $350 in general payments to Dr. Reuben from 1 company from 2016 to 2016. The largest total came from Otsuka Pharmaceutical Development & Commercialization, Inc.
How long has Dr. David Bart Reuben been practicing?
Dr. Reuben graduated from medical school in 1977, 49 years ago.
Does Dr. David Bart Reuben do research?
Dmand AI links 180 publications to Dr. Reuben, published from 2003 to 2025.
Who does Dr. David Bart Reuben publish with?
Dr. Reuben's most frequent co-authors are Lee Alexandra Jennings, MD (11 shared papers), Thomas M. Gill, MD (9 shared papers) and Joseph Gromer Ouslander, MD (9 shared papers).
What insurance does Dr. David Bart Reuben accept?
Dr. Reuben is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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