Dr. John M. Barnett, MD
- Medicare services, 2024
- 63,041
- Medicare patients, 2024
- 587
- Part D claims, 2024
- 1,803
- MIPS score, 2024
- 86
- Hospital affiliations
- 5
- Practice address
- 1750 E Ken Pratt Blvd, Longmont, CO 80504
- Practice phone
- Call (720) 718-3005
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Barnett'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. John M. Barnett is a hematologist and oncologist in Longmont, Colorado
Dr. Barnett practices at UCHealth Longs Peak Hospital in Longmont, Colorado, part of UCHealth.
Dr. Barnett's NPI, 1952341273, was assigned on June 7, 2006. Dr. Barnett graduated from Southern Illinois University School of Medicine in 2000. Dr. Barnett holds Colorado license 44274.
- NPI
- 1952341273NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587667894
- NPI enumeration date
- June 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (720) 718-3005
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John M. Barnett practices at UCHealth Longs Peak Hospital in Longmont, Colorado
Dr. Barnett's primary practice is UCHealth Longs Peak Hospital, at 1750 E Ken Pratt Blvd, Longmont, CO 80504 in Boulder County. The practice phone is (720) 718-3005.
- UCHealth Longs Peak Hospital1750 E Ken Pratt Blvd, Longmont, CO 80504 · Boulder CountyPhone(720) 718-3005
Source: Dmand AI Affiliation Data
Dr. John M. Barnett is affiliated with 7 sites of care and 2 medical groups
Dr. Barnett's primary practice is UCHealth Longs Peak Hospital in Longmont, Colorado, part of UCHealth. Dr. Barnett is also affiliated with CommonSpirit - Longmont United Hospital. The medical group on file is Rocky Mountain Cancer Centers. Dmand AI also links Dr. Barnett to 3 more hospitals, 1 group practice or clinic, 1 therapy and rehab clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John M. Barnett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barnett practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCHealth Longs Peak Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John M. Barnett is one of 179 hematologists and oncologists in Colorado
Hematology and oncology is Dr. Barnett's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Barnett is licensed in Colorado.
Specialties and state licenses
- Hematology and oncology, ColoradoPrimary
Hematologists and oncologists near Dr. Barnett
Counts of hematologists and oncologists 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. John M. Barnett billed Medicare for 63,041 services in 2024
CMS data shows 63,041 Medicare services from Dr. Barnett across 68 procedure codes in 2024, for 587 Medicare patients. Medicare paid $822,669 for them. Every service was in an office.
Dr. Barnett's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 42,5212024: 52,75824%
- Lab and pathology
- 2023: 4,6592024: 5,46017%
- Tests and treatments
- 2023: 1,4522024: 1,72319%
- Surgery
- 2023: 1,5962024: 1,6976%
- Office and hospital visits
- 2023: 8362024: 8755%
- Other services
- 2023: 1,2532024: 52858%
Dr. Barnett compared with the Colorado median for hematologists and oncologists, 2024
- Dr. Barnett
- Colorado median
- Medicare services
- 63,041vs 624101.0 times
- Medicare patients
- 587vs 2422.4 times
- Part D claims
- 1,553vs 5033.1 times
Medians across 181 hematologists and oncologists in Colorado with Dmand AI profiles that report each measure.
Dr. Barnett'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barnett and other hematologists and oncologists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John M. Barnett treated 587 Medicare patients in 2024, average age 74
CMS counts 587 Medicare patients who saw Dr. Barnett in 2024. The largest group is 65 to 74, with 263 patients. 62% of them have high blood pressure, and 62% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.88, 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. Barnett's median patient age at 73, with 51% women.
Dr. Barnett's Medicare patients by age, 2024
Dr. Barnett's Medicare patients by sex, 2024
- Women27948%
- Men30852%
Chronic conditions among Dr. Barnett's Medicare patients, 2024
- High blood pressure62%
- High cholesterol62%
- Cancer52%
- Arthritis42%
- Ischemic heart disease29%
- Chronic kidney disease27%
- Mood disorders24%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barnett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
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. John M. Barnett wrote 1,803 Medicare Part D claims in 2024
In 2024, Dr. Barnett wrote 1,803 Medicare Part D claims for 269 patients. 71% of them were for generic drugs. CMS names the drug for 1,553 of them, across 44 drugs with 11 or more claims each, at $3,915,469 in total drug cost. In 2023, CMS named 1,479 claims across 38 drugs.
Dr. Barnett's Part D claims by kind of drug, 2024
- Generic1,286 claims71%
- Brand-name and other517 claims29%
Dr. Barnett'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. Barnett's Part D claims, 2024
- Opioids2%34 of 1,803 claims
- Antibiotics1%22 of 1,803 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: 1,4792024: 1,5535%
Drugs named by CMS: 44 in 2024, 38 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. John M. Barnett scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Barnett for performance year 2024, reported as part of a group. Dr. Barnett accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Barnett as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Barnett's MIPS scores, performance year 2024
- 86of 100Final score
- 74.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John M. Barnett received $371 in industry payments from 2018 to 2025
CMS Open Payments shows 13 general payments to Dr. Barnett from 9 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 53% of the total. Sanofi and Genzyme US Companies paid the most, $96.
General payments to Dr. Barnett by program year, 2018 to 2025
General payments to Dr. Barnett by kind, 2018 to 2025
- Food and beverage$19653%
- Education$17547%
Companies that paid Dr. Barnett the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John M. Barnett graduated from Southern Illinois University School of Medicine
Dr. Barnett graduated from Southern Illinois University School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John M. Barnett'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. John M. Barnett
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. John M. Barnett's NPI number?
Dr. John M. Barnett's NPI number is 1952341273. It was assigned on June 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John M. Barnett?
Dr. John M. Barnett is a hematologist and oncologist in Longmont, Colorado. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. John M. Barnett practice?
Dr. Barnett practices at 1750 E Ken Pratt Blvd, Longmont, CO 80504. Dr. Barnett's primary practice is UCHealth Longs Peak Hospital in Longmont, Colorado, part of UCHealth. Dmand AI also links Dr. Barnett to 3 hospitals, 1 group practice or clinic, 1 therapy and rehab clinic and 1 medical group.
What is Dr. John M. Barnett's office phone number?
The practice phone on file for Dr. Barnett is (720) 718-3005.
What is Dr. John M. Barnett's medical license number?
Dr. Barnett holds Colorado license 44274.
Which hospitals is Dr. John M. Barnett affiliated with?
Dr. Barnett practices at UCHealth Longs Peak Hospital in Longmont, Colorado. Dr. Barnett is also affiliated with CommonSpirit - Longmont United Hospital. Dmand AI links Dr. Barnett to 3 more hospitals.
What medical group is Dr. John M. Barnett part of?
Dr. Barnett is linked to Rocky Mountain Cancer Centers. Dmand AI links Dr. Barnett to 1 more medical group.
Does Dr. John M. Barnett accept Medicare?
Yes. CMS data shows Dr. Barnett billed Medicare for 63,041 services in 2024, and Dr. Barnett accepts Medicare assignment.
Does Dr. John M. Barnett offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Barnett as offering telehealth services.
What is Dr. John M. Barnett's MIPS score?
Dr. Barnett's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. John M. Barnett see?
CMS counts 587 Medicare patients who saw Dr. Barnett in 2024, with an average age of 74.
What services does Dr. John M. Barnett bill to Medicare?
In 2024, Dr. Barnett's most billed Medicare services were injected or infused drug (J1453), injected or infused drug (J9271) and injected or infused drug (J9263).
Where did Dr. John M. Barnett go to medical school?
Dr. Barnett graduated from Southern Illinois University School of Medicine in 2000.
What drugs does Dr. John M. Barnett prescribe most?
In 2024 Medicare Part D data, Dr. Barnett's most prescribed drugs by claims were Prednisone, Abiraterone Acetate and Gabapentin.
Has Dr. John M. Barnett received payments from drug or device companies?
CMS Open Payments shows $371 in general payments to Dr. Barnett from 9 companies from 2018 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. John M. Barnett been practicing?
Dr. Barnett graduated from medical school in 2000, 26 years ago.
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