Dr. Mark H. Messenger, MD
- Medicare services, 2024
- 113,828
- Medicare patients, 2024
- 824
- Part D claims, 2024
- 1,732
- MIPS score, 2024
- 93
- Hospital affiliations
- 5
- Practice address
- 605 Glenwood Dr, Chattanooga, TN 37404
- Practice phone
- Call (615) 329-0570
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tennessee Oncology
Chattanooga, Tennessee
Find Dr. Messenger'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. Mark H. Messenger is a medical oncologist in Chattanooga, Tennessee
Dr. Messenger practices at Tennessee Oncology in Chattanooga, Tennessee.
Dr. Messenger's NPI, 1568455517, was assigned on August 25, 2005. Dr. Messenger graduated from University of Louisville School of Medicine in 1984. Dr. Messenger holds Tennessee license 30271.
- NPI
- 1568455517NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264615871
- NPI enumeration date
- August 25, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 329-0570
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark H. Messenger practices at Tennessee Oncology in Chattanooga, Tennessee
Dr. Messenger's primary practice is Tennessee Oncology, at 605 Glenwood Dr, Chattanooga, TN 37404 in Hamilton County. The practice phone is (615) 329-0570.
- Tennessee Oncology605 Glenwood Dr, Chattanooga, TN 37404 · Hamilton CountyPhone(615) 329-0570
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark H. Messenger is affiliated with 7 sites of care and 2 medical groups
Dr. Messenger's primary practice is Tennessee Oncology in Chattanooga, Tennessee. Dr. Messenger is also affiliated with Maury Regional Medical Center. The medical group on file is Tennessee Oncology. Dmand AI also links Dr. Messenger to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark H. Messenger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Messenger practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tennessee Oncology | 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. Mark H. Messenger is one of 99 medical oncologists in Tennessee
Medical oncology is Dr. Messenger's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Messenger is licensed in Tennessee.
Specialties and state licenses
- Medical oncology, TennesseePrimary
Medical oncologists near Dr. Messenger
Counts of medical 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. Mark H. Messenger billed Medicare for 113,828 services in 2024
CMS data shows 113,828 Medicare services from Dr. Messenger across 70 procedure codes in 2024, for 824 Medicare patients. Medicare paid $1,576,646 for them. Every service was in an office.
Dr. Messenger's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 21,4702024: 99,047361%
- Lab and pathology
- 2023: 3,3802024: 7,580124%
- Tests and treatments
- 2023: 7762024: 2,624238%
- Surgery
- 2023: 1,4682024: 1,88729%
- Office and hospital visits
- 2023: 1,9962024: 1,66417%
- Other services
- 2023: 02024: 1,026
Dr. Messenger compared with the Tennessee median for medical oncologists, 2024
- Dr. Messenger
- Tennessee median
- Medicare services
- 113,828vs 1,19495.3 times
- Medicare patients
- 824vs 2343.5 times
- Part D claims
- 1,517vs 3704.1 times
Medians across 94 medical oncologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Messenger'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. Messenger and other medical oncologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark H. Messenger treated 824 Medicare patients in 2024, average age 75
CMS counts 824 Medicare patients who saw Dr. Messenger in 2024. The largest group is 65 to 74, with 361 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.66, 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. Messenger's median patient age at 69, with 61% women.
Dr. Messenger's Medicare patients by age, 2024
Dr. Messenger's Medicare patients by sex, 2024
- Women48659%
- Men33841%
Chronic conditions among Dr. Messenger's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Cancer48%
- Arthritis45%
- Chronic kidney disease38%
- Diabetes35%
- Ischemic heart disease29%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Messenger's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark H. Messenger wrote 1,732 Medicare Part D claims in 2024
In 2024, Dr. Messenger wrote 1,732 Medicare Part D claims for 301 patients. 81% of them were for generic drugs. CMS names the drug for 1,517 of them, across 41 drugs with 11 or more claims each, at $3,646,899 in total drug cost. In 2023, CMS named 1,374 claims across 33 drugs.
Dr. Messenger's Part D claims by kind of drug, 2024
- Generic1,404 claims81%
- Brand-name328 claims19%
Dr. Messenger'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. Messenger's Part D claims, 2024
- Opioids14%238 of 1,732 claims
- Antibiotics2%39 of 1,732 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: 1,3742024: 1,51710%
Drugs named by CMS: 41 in 2024, 33 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. Mark H. Messenger 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. Messenger for performance year 2024, reported as part of a group. Dr. Messenger accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Messenger's MIPS scores, performance year 2024
- 93of 100Final score
- 89of 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. Mark H. Messenger received $1,345 in industry payments from 2018 to 2025
CMS Open Payments shows 52 general payments to Dr. Messenger from 20 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 97% of the total. Novartis Pharmaceuticals Corporation paid the most, $493.
General payments to Dr. Messenger by program year, 2018 to 2025
General payments to Dr. Messenger by kind, 2018 to 2025
- Food and beverage$1,29897%
- Education$473%
Companies that paid Dr. Messenger 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. Mark H. Messenger graduated from University of Louisville School of Medicine
Dr. Messenger graduated from University of Louisville School of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark H. Messenger'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 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. Mark H. Messenger
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. Mark H. Messenger's NPI number?
Dr. Mark H. Messenger's NPI number is 1568455517. It was assigned on August 25, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark H. Messenger?
Dr. Mark H. Messenger is a medical oncologist in Chattanooga, Tennessee. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Mark H. Messenger practice?
Dr. Messenger practices at 605 Glenwood Dr, Chattanooga, TN 37404. Dr. Messenger's primary practice is Tennessee Oncology in Chattanooga, Tennessee. Dmand AI also links Dr. Messenger to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Mark H. Messenger's office phone number?
The practice phone on file for Dr. Messenger is (615) 329-0570.
What is Dr. Mark H. Messenger's medical license number?
Dr. Messenger holds Tennessee license 30271.
Which hospitals is Dr. Mark H. Messenger affiliated with?
Dr. Messenger is affiliated with Maury Regional Medical Center. Dmand AI links Dr. Messenger to 4 more hospitals.
What medical group is Dr. Mark H. Messenger part of?
Dr. Messenger is linked to Tennessee Oncology. Dmand AI links Dr. Messenger to 1 more medical group.
Does Dr. Mark H. Messenger accept Medicare?
Yes. CMS data shows Dr. Messenger billed Medicare for 113,828 services in 2024, and Dr. Messenger accepts Medicare assignment.
What is Dr. Mark H. Messenger's MIPS score?
Dr. Messenger's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark H. Messenger see?
CMS counts 824 Medicare patients who saw Dr. Messenger in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Mark H. Messenger bill to Medicare?
In 2024, Dr. Messenger's most billed Medicare services were injected or infused drug (J1439), injected or infused drug (J9271) and injected or infused drug (J1453).
Where did Dr. Mark H. Messenger go to medical school?
Dr. Messenger graduated from University of Louisville School of Medicine in 1984.
What drugs does Dr. Mark H. Messenger prescribe most?
In 2024 Medicare Part D data, Dr. Messenger's most prescribed drugs by claims were Anastrozole, Tamoxifen Citrate and Oxycodone HCl.
Has Dr. Mark H. Messenger received payments from drug or device companies?
CMS Open Payments shows $1,345 in general payments to Dr. Messenger from 20 companies from 2018 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Mark H. Messenger been practicing?
Dr. Messenger graduated from medical school in 1984, 42 years ago.
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