Absorptiometry, PhotonBlood GlucoseBody Mass Index
Dr. Thomas Allen Buchanan, MD
NPI1003143991
- Publications
- 22
- Clinical trials
- 1
- Industry payments
- $2,850
- Insurance carriers
- 1
- State licenses
- 3
- Practice address
- 1500 San Pablo St, Los Angeles, CA 90033-5313
- Practice phone
- Call (323) 442-9576
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Buchanan'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. Thomas Allen Buchanan is an internist in Los Angeles, California
Dr. Buchanan practices in Los Angeles, California.
Dr. Buchanan's NPI, 1003143991, was assigned on November 12, 2009. Dr. Buchanan graduated from Carver College of Medicine in 1978. Dr. Buchanan's California license number on file is C42204.
NPI and contact details
- NPI
- 1003143991NPI Registry (opens in a new tab)
- NPI enumeration date
- November 12, 2009
- NPI status
- Active
- Practice phone
- (323) 442-9576
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Thomas Allen Buchanan's practice address is in Los Angeles, California
Dr. Buchanan's practice address in the NPI Registry is 1500 San Pablo St, Los Angeles, CA 90033-5313. The practice phone is (323) 442-9576.
- NPI Registry address1500 San Pablo St, Los Angeles, CA 90033-5313Phone(323) 442-9576
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Thomas Allen Buchanan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buchanan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Buchanan's practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Buchanan practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas Allen Buchanan is one of 16,751 internists in California
Internal medicine is Dr. Buchanan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Buchanan is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. Dmand AI has Dr. Buchanan's licenses on file in 3 states: California, Illinois and Iowa.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Illinois license
- Iowa license
Internists near Dr. Buchanan
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. Thomas Allen Buchanan has 22 publications on record
Dmand AI links 22 papers to Dr. Buchanan, published from 2013 to 2018. 2018 was the busiest year, with 2. The most frequent topics are Blood Glucose, Diabetes, Gestational and Insulin Resistance. Dr. Buchanan's most frequent co-authors are Linda A. Barbour, MD, Elizabeth Ogden Beale and Ralph A. Defronzo, MD.
Papers22
Years published2013 to 2018
Dr. Buchanan's papers by year, 2013 to 2018
Topics Dr. Buchanan writes about most
- Blood Glucose
- Diabetes, Gestational
- Insulin Resistance
- Insulin-Secreting Cells
Dr. Buchanan's most frequent co-authors
- Linda A. Barbour, MD1 shared paper
- Elizabeth Ogden Beale1 shared paper
- Ralph A. Defronzo, MD1 shared paper
Recent publications by Dr. Buchanan
See who Dr. Buchanan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Buchanan 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. Thomas Allen Buchanan has worked on 1 clinical trial
Dmand AI links Dr. Buchanan to 1 clinical trial. Conditions studied include Prediabetic State and Diabetes Mellitus, Type 2.
Conditions in Dr. Buchanan's trials
- Prediabetic State
- Diabetes Mellitus, Type 2
Investigators on the most trials with Dr. Buchanan
Recent clinical trials with Dr. Buchanan
Prediabetic StateDiabetes Mellitus, Type 2MetforminGastric banding
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Thomas Allen Buchanan received $2,850 in industry payments from 2016 to 2017
CMS Open Payments shows 4 general payments to Dr. Buchanan from 2 drug and device companies from 2016 to 2017. Speaker and faculty fees make up the largest share, 92% of the total. Merck Sharp & Dohme Corporation paid the most, $2,780.
General payments to Dr. Buchanan by program year, 2016 to 2017
General payments to Dr. Buchanan by kind, 2016 to 2017
$2.9Kin total
- Speaker and faculty fees$2,62592%
- Food and beverage$2007%
- Travel and lodging$251%
Companies that paid Dr. Buchanan the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Allen Buchanan has 21 awards and honors on record
Dmand AI lists 21 awards for Dr. Buchanan, most recently University Professor in 2023.
Awards and honors for Dr. Buchanan
- 2023
- University Professor
- 2019
- Bernard J. Hanely Chair in Medicine
- 2017
- Associates Award
- 2014
- Josiah Brown Award
- Mayo Soley Award
- 2011
- Lilly Lecture
Source: Dmand AI Professional Profile Data
Dr. Thomas Allen Buchanan graduated from Carver College of Medicine
Dr. Buchanan graduated from Carver College of Medicine in 1978.
- Medical school
- Board certified in endocrinology, diabetes and metabolism
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Thomas Allen Buchanan accepts plans from 1 insurance carrier
Dr. Buchanan is in network with 1 carrier, including LA Care. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- LA Care
Plan types Dr. Buchanan accepts, by number of carriers
- HMO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas Allen Buchanan'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) |
| 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. Thomas Allen Buchanan
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. Thomas Allen Buchanan's NPI number?
Dr. Thomas Allen Buchanan's NPI number is 1003143991. It was assigned on November 12, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Allen Buchanan?
Dr. Thomas Allen Buchanan is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Thomas Allen Buchanan practice?
Dr. Buchanan practices at 1500 San Pablo St, Los Angeles, CA 90033-5313.
What is Dr. Thomas Allen Buchanan's office phone number?
The practice phone on file for Dr. Buchanan is (323) 442-9576.
What is Dr. Thomas Allen Buchanan's medical license number?
Dr. Buchanan's California license number on file is C42204, one of the licenses on file in 3 states.
Which states has Dr. Thomas Allen Buchanan been licensed in?
Dmand AI has state licenses on file for Dr. Buchanan in California (1986 to 2025), Illinois (1981 to 1987) and Iowa (1979 to 1980).
Is Dr. Thomas Allen Buchanan board certified?
Yes. Dr. Buchanan is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine.
Where did Dr. Thomas Allen Buchanan go to medical school?
Dr. Buchanan graduated from Carver College of Medicine in 1978.
Has Dr. Thomas Allen Buchanan received payments from drug or device companies?
CMS Open Payments shows $2,850 in general payments to Dr. Buchanan from 2 companies from 2016 to 2017. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Thomas Allen Buchanan been practicing?
Dr. Buchanan graduated from medical school in 1978, 48 years ago.
Show 3 more questionsShow fewer questions
Does Dr. Thomas Allen Buchanan do research?
Dmand AI links 22 publications to Dr. Buchanan, published from 2013 to 2018. Dr. Buchanan has worked on 1 clinical trial.
Who does Dr. Thomas Allen Buchanan publish with?
Dr. Buchanan's most frequent co-authors are Linda A. Barbour, MD (1 shared paper), Elizabeth Ogden Beale (1 shared paper) and Ralph A. Defronzo, MD (1 shared paper).
What insurance does Dr. Thomas Allen Buchanan accept?
Dr. Buchanan is in network with 1 carrier, including LA Care. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card