$655 in research paymentsColitis, UlcerativeColitisMirikizumab
Dr. Geoffrey Douglas Block, MD
NPI1942208608PAC ID1456527530
- Medicare services, 2024
- 140
- Medicare patients, 2024
- 96
- Part D claims, 2024
- 324
- Clinical trials
- 1
- MIPS score, 2024
- 93
- Practice address
- 1501 N Campbell Ave, Tucson, AZ 85724
- Practice phone
- Call (520) 626-2761
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University of Arizona
Tucson, Arizona
Find Dr. Block'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. Geoffrey Douglas Block is a gastroenterologist in Tucson, Arizona
Dr. Block practices at University of Arizona in Tucson, Arizona.
Dr. Block's NPI, 1942208608, was assigned on July 7, 2005. Dr. Block holds California license 131448.
NPI and contact details
- NPI
- 1942208608NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456527530
- NPI enumeration date
- July 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (520) 626-2761
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Geoffrey Douglas Block practices at University of Arizona in Tucson, Arizona
Dr. Block's primary practice is University of Arizona, at 1501 N Campbell Ave, Tucson, AZ 85724 in Pima County. The practice phone is (520) 626-2761.
- University of Arizona1501 N Campbell Ave, Tucson, AZ 85724 · Pima CountyPhone(520) 626-2761
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Geoffrey Douglas Block is affiliated with 4 sites of care and 1 medical group
Dr. Block's primary practice is University of Arizona in Tucson, Arizona. Dr. Block is also affiliated with Banner - University Medical Center Tucson. The medical group on file is Banner Medical Group. Dmand AI also links Dr. Block to 2 more hospitals, each named with a free account.
University of ArizonaPrimary
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. Geoffrey Douglas Block's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Block practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Arizona | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Geoffrey Douglas Block is one of 380 gastroenterologists in Arizona
Gastroenterology is Dr. Block's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Block's licenses on file in 2 states: California and Pennsylvania.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Transplant hepatology, Pennsylvania
Gastroenterologists near Dr. Block
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
Dr. Geoffrey Douglas Block billed Medicare for 140 services in 2024
CMS data shows 140 Medicare services from Dr. Block across 6 procedure codes in 2024, for 96 Medicare patients. Medicare paid $13,686 for them.
Medicare services, 2024140
Medicare patients96
Paid by Medicare$13,686
Procedure codes6
Dr. Block's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 812024: 9922%
- Surgery
- 2023: 02024: 28
- Tests and treatments
- 2023: 02024: 13
Where Dr. Block's Medicare services took place, 2024
- In an office5136%
- In a facility8964%
Dr. Block compared with the Arizona median for gastroenterologists, 2024
- Dr. Block
- Arizona median
- Medicare services
- 140vs 50872% below
- Medicare patients
- 96vs 31970% below
- Part D claims
- 118vs 31062% below
Medians across 369 gastroenterologists in Arizona with Dmand AI profiles that report each measure.
Dr. Block'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Geoffrey Douglas Block treated 96 Medicare patients in 2024, average age 70
CMS counts 96 Medicare patients who saw Dr. Block in 2024. The largest group is 65 to 74, with 52 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 2.02, 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. Block's median patient age at 64, with 51% women.
Medicare patients, 202496
Average age70
Average risk score2.02
Also on Medicaid17%
Dr. Block's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Block's Medicare patients by sex, 2024
- Women3739%
- Men5961%
Chronic conditions among Dr. Block's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease40%
- Arthritis39%
- Diabetes34%
- Ischemic heart disease34%
- Mood disorders30%
- Alcohol and drug use disorders28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Block's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Geoffrey Douglas Block wrote 324 Medicare Part D claims in 2024
In 2024, Dr. Block wrote 324 Medicare Part D claims for 90 patients. 76% of them were for generic drugs. CMS names the drug for 118 of them, across 7 drugs with 11 or more claims each, at $4,285 in total drug cost. In 2023, CMS named 202 claims across 6 drugs.
Part D claims, 2024324
Drugs named by CMS7
Total drug cost$4,285
Part D patients90
Dr. Block's Part D claims by kind of drug, 2024
- Generic245 claims76%
- Brand-name and other79 claims24%
Dr. Block'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2022024: 11842%
Drugs named by CMS: 7 in 2024, 6 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. Geoffrey Douglas Block scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Block for performance year 2024, reported through an alternative payment model (APM). Dr. Block accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Block's MIPS scores, performance year 2024
- 93of 100Final score
- 74.6of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Geoffrey Douglas Block has worked on 1 clinical trial
Dmand AI links Dr. Block to 1 clinical trial. Conditions studied include Colitis, Ulcerative and Colitis. Open Payments lists research payments to Dr. Block that name 1 trial.
Conditions in Dr. Block's trials
- Colitis, Ulcerative
- Colitis
Investigators on the most trials with Dr. Block
- Bincy Paulose Abraham, MD1 shared trial
- Waqqas Afif, MD1 shared trial
- Yasmin Alishahi, MD1 shared trial
Recent clinical trials with Dr. Block
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Geoffrey Douglas Block received $5,536 in industry payments from 2016 to 2025
CMS Open Payments shows 87 general payments to Dr. Block from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 61% of the total. Boston Scientific Corporation paid the most, $2,242. It also lists 1 research payment totaling $655 in 2018, naming 1 clinical trial.
General payments to Dr. Block by program year, 2016 to 2025
General payments to Dr. Block by kind, 2016 to 2025
$5.5Kin total
- Food and beverage$3,37961%
- Consulting fees$1,50027%
- Travel and lodging$59711%
- Education$601%
Companies that paid Dr. Block the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Geoffrey Douglas Block's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Geoffrey Douglas Block
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. Geoffrey Douglas Block's NPI number?
Dr. Geoffrey Douglas Block's NPI number is 1942208608. It was assigned on July 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Geoffrey Douglas Block?
Dr. Geoffrey Douglas Block is a gastroenterologist in Tucson, Arizona. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Geoffrey Douglas Block practice?
Dr. Block practices at 1501 N Campbell Ave, Tucson, AZ 85724. Dr. Block's primary practice is University of Arizona in Tucson, Arizona. Dmand AI also links Dr. Block to 2 hospitals.
What is Dr. Geoffrey Douglas Block's office phone number?
The practice phone on file for Dr. Block is (520) 626-2761.
What is Dr. Geoffrey Douglas Block's medical license number?
Dr. Block holds California license 131448, one of the licenses on file in 2 states.
Which states has Dr. Geoffrey Douglas Block been licensed in?
Dmand AI has state licenses on file for Dr. Block in California and Pennsylvania.
Which hospitals is Dr. Geoffrey Douglas Block affiliated with?
Dr. Block is affiliated with Banner - University Medical Center Tucson. Dmand AI links Dr. Block to 2 more hospitals.
What medical group is Dr. Geoffrey Douglas Block part of?
Dr. Block is linked to Banner Medical Group.
Does Dr. Geoffrey Douglas Block accept Medicare?
Yes. CMS data shows Dr. Block billed Medicare for 140 services in 2024, and Dr. Block accepts Medicare assignment.
What is Dr. Geoffrey Douglas Block's MIPS score?
Dr. Block's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Geoffrey Douglas Block see?
CMS counts 96 Medicare patients who saw Dr. Block in 2024, with an average age of 70.
What services does Dr. Geoffrey Douglas Block bill to Medicare?
In 2024, Dr. Block's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99215) and surgery: digestive system (43239).
What drugs does Dr. Geoffrey Douglas Block prescribe most?
In 2024 Medicare Part D data, Dr. Block's most prescribed drugs by claims were Tacrolimus, Gavilyte-G and Fluconazole.
Has Dr. Geoffrey Douglas Block received payments from drug or device companies?
CMS Open Payments shows $5,536 in general payments to Dr. Block from 20 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Geoffrey Douglas Block been practicing?
Dr. Block graduated from medical school in 1986, 40 years ago.
Does Dr. Geoffrey Douglas Block do research?
Dr. Block has worked on 1 clinical trial.
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