Adam Donald Farmer, MBBS, PhD
- Medicare services, 2024
- 97
- Medicare patients, 2024
- 107
- Part D claims, 2024
- 105
- Publications
- 135
- Clinical trials
- 1
- Practice address
- 1201 S Grand Blvd, Saint Louis, MO 63104
- Practice phone
- Call (314) 257-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Adam Farmer'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.
Adam Donald Farmer is a gastroenterologist in Saint Louis, Missouri
Adam Farmer practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care.
Adam Farmer's NPI, 1942050463, was assigned on March 26, 2024. Adam Farmer holds Missouri license 2023045808.
- NPI
- 1942050463NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527406974
- NPI enumeration date
- March 26, 2024
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 257-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Adam Donald Farmer practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri
Adam Farmer's primary practice is SSM Health Saint Louis University Hospital, at 1201 S Grand Blvd, Saint Louis, MO 63104 in St. Louis City. The practice phone is (314) 257-8000.
- SSM Health Saint Louis University Hospital1201 S Grand Blvd, Saint Louis, MO 63104 · St. Louis CityPhone(314) 257-8000
Source: Dmand AI Affiliation Data
Adam Donald Farmer is affiliated with 3 sites of care and 1 medical group
Adam Farmer's primary practice is SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care. Adam Farmer is also affiliated with Memorial Hospital in Belleville. The medical group on file is SLUCare Physician Group. Dmand AI also links Adam Farmer to 1 more behavioral health center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Adam Donald Farmer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Adam Farmer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health Saint Louis University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Adam Donald Farmer is one of 329 gastroenterologists in Missouri
Gastroenterology is Adam Farmer's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Adam Farmer is licensed in Missouri.
Specialties and state licenses
- Gastroenterology, MissouriPrimary
Gastroenterologists near Adam Farmer
Counts of gastroenterologists 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
Adam Donald Farmer billed Medicare for 97 services in 2024
CMS data shows 97 Medicare services from Adam Farmer across 6 procedure codes in 2024, for 107 Medicare patients. Medicare paid $6,864 for them. Every service was in a facility, such as a hospital, rather than an office.
Adam Farmer's Medicare services by type, 2024
- Office and hospital visits72
- Tests and treatments25
Adam Farmer compared with the Missouri median for gastroenterologists, 2024
- Adam Farmer
- Missouri median
- Medicare services
- 97vs 41677% below
- Medicare patients
- 107vs 29664% below
- Part D claims
- 59vs 43486% below
Medians across 337 gastroenterologists in Missouri with Dmand AI profiles that report each measure.
Adam Farmer'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 Adam Farmer?
Medicare shows one payer. Book a meeting to get commercial claims data for Adam Farmer and other gastroenterologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Adam Donald Farmer treated 107 Medicare patients in 2024, average age 67
CMS counts 107 Medicare patients who saw Adam Farmer in 2024. The largest group is 65 to 74, with 45 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Adam Farmer's median patient age at 59, with 60% women.
Adam Farmer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Adam Farmer's Medicare patients by sex, 2024
- Women5753%
- Men5047%
Chronic conditions among Adam Farmer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Arthritis63%
- Anxiety46%
- Diabetes40%
- Mood disorders40%
- Ischemic heart disease37%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
Adam Farmer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Adam Donald Farmer wrote 105 Medicare Part D claims in 2024
In 2024, Adam Farmer wrote 105 Medicare Part D claims for 85 patients. 84% of them were for generic drugs. CMS names the drug for 59 of them, across 2 drugs with 11 or more claims each, at $902 in total drug cost.
Adam Farmer's Part D claims by kind of drug, 2024
- Generic88 claims84%
- Brand-name17 claims16%
Adam Farmer'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
Adam Donald Farmer ranks in the 65th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Adam Farmer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 56 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Adam Farmer, more than 65% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Adam Farmer ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 65th percentile56 procedures
- Colonoscopy
- 59th percentile40 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Adam Donald Farmer has 135 publications on record
Dmand AI links 135 papers to Adam Farmer, published from 2010 to 2025. 2016 was the busiest year, with 10. The most frequent topics are Irritable Bowel Syndrome, Autonomic Nervous System and Pain. Adam Farmer has published most often in Neurogastroenterol Motil. Adam Farmer's most frequent co-authors are Ayesha Akbar, MD, Lisa A. Jones, MD and Aditi Kumar.
Adam Farmer's papers by year, 2015 to 2025
Topics Adam Farmer writes about most
- Irritable Bowel Syndrome
- Autonomic Nervous System
- Pain
- Brain
- Esophagus
- Constipation
- Depressive Disorder, Major
- Gastrointestinal Motility
Adam Farmer's most frequent co-authors
Recent publications by Adam Farmer
Expert Rev Gastroenterol Hepatol
J Theor Biol
See who Adam Farmer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Adam Farmer works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Adam Donald Farmer has worked on 1 clinical trial
Dmand AI links Adam Farmer to 1 clinical trial. Conditions studied include Irritable Bowel Syndrome and Colonic Diseases, Functional.
Conditions in Adam Farmer's trials
- Irritable Bowel Syndrome
- Colonic Diseases, Functional
Investigators on the most trials with Adam Farmer
Recent clinical trials with Adam Farmer
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Adam Donald Farmer received $297 in industry payments from 2024 to 2025
CMS Open Payments shows 4 general payments to Adam Farmer from 4 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Ardelyx, Inc. paid the most, $122.
General payments to Adam Farmer by program year, 2024 to 2025
Companies that paid Adam Farmer the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Adam Donald Farmer'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 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)Doctors and Clinicians Utilization Data (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 |
| 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 Adam Donald Farmer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Adam Donald Farmer's NPI number?
Adam Donald Farmer's NPI number is 1942050463. It was assigned on March 26, 2024, and it is active in the NPI Registry.
What does Adam Donald Farmer specialize in?
Adam Donald Farmer is a gastroenterologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Adam Donald Farmer practice?
Adam Farmer practices at 1201 S Grand Blvd, Saint Louis, MO 63104. Adam Farmer's primary practice is SSM Health Saint Louis University Hospital in Saint Louis, Missouri, part of SSM Health Care. Dmand AI also links Adam Farmer to 1 behavioral health center.
What is Adam Donald Farmer's office phone number?
The practice phone on file for Adam Farmer is (314) 257-8000.
What is Adam Donald Farmer's medical license number?
Adam Farmer holds Missouri license 2023045808.
Which hospitals is Adam Donald Farmer affiliated with?
Adam Farmer practices at SSM Health Saint Louis University Hospital in Saint Louis, Missouri. Adam Farmer is also affiliated with Memorial Hospital in Belleville.
What medical group is Adam Donald Farmer part of?
Adam Farmer is linked to SLUCare Physician Group.
Does Adam Donald Farmer accept Medicare?
Yes. CMS data shows Adam Farmer billed Medicare for 97 services in 2024, and Adam Farmer accepts Medicare assignment.
How many Medicare patients does Adam Donald Farmer see?
CMS counts 107 Medicare patients who saw Adam Farmer in 2024, with an average age of 67.
What services does Adam Donald Farmer bill to Medicare?
In 2024, Adam Farmer's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and office visit, established patient (99214).
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What drugs does Adam Donald Farmer prescribe most?
In 2024 Medicare Part D data, Adam Farmer's most prescribed drugs by claims were Gavilyte-G and Gavilyte-C.
Has Adam Donald Farmer received payments from drug or device companies?
CMS Open Payments shows $297 in general payments to Adam Farmer from 4 companies from 2024 to 2025. The largest total came from Ardelyx, Inc.
How long has Adam Donald Farmer been practicing?
Adam Farmer graduated from medical school in 2001, 25 years ago.
Does Adam Donald Farmer do research?
Dmand AI links 135 publications to Adam Farmer, published from 2010 to 2025. Adam Farmer has worked on 1 clinical trial.
Who does Adam Donald Farmer publish with?
Adam Farmer's most frequent co-authors are Ayesha Akbar, MD (2 shared papers), Lisa A. Jones, MD (2 shared papers) and Aditi Kumar (2 shared papers).
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