Dr. Andrew Dean Alex Marshall, MD
- Medicare services, 2024
- 267
- Medicare patients, 2024
- 266
- Part D claims, 2024
- 78
- Publications
- 8
- Hospital affiliations
- 4
- Practice address
- 355 New Shackle Island Rd, Hendersonville, TN 37075
- Practice phone
- Call (615) 338-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marshall'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. Andrew Dean Alex Marshall is an emergency medicine physician in Hendersonville, Tennessee
Dr. Marshall practices at TriStar Hendersonville Medical Center in Hendersonville, Tennessee, part of HCA Healthcare.
Dr. Marshall's NPI, 1609257609, was assigned on June 16, 2015. Dr. Marshall graduated from Meharry Medical College School of Medicine in 2015. Dr. Marshall holds Massachusetts license 274195.
- NPI
- 1609257609NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668775545
- NPI enumeration date
- June 16, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 338-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew Dean Alex Marshall practices at TriStar Hendersonville Medical Center in Hendersonville, Tennessee
Dr. Marshall's primary practice is TriStar Hendersonville Medical Center, at 355 New Shackle Island Rd, Hendersonville, TN 37075 in Sumner County. The practice phone is (615) 338-1000.
- TriStar Hendersonville Medical Center355 New Shackle Island Rd, Hendersonville, TN 37075 · Sumner CountyPhone(615) 338-1000
Source: Dmand AI Affiliation Data
Dr. Andrew Dean Alex Marshall is affiliated with 12 sites of care and 8 medical groups
Dr. Marshall's primary practice is TriStar Hendersonville Medical Center in Hendersonville, Tennessee, part of HCA Healthcare. Dr. Marshall is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Marshall to 2 more hospitals, 8 group practices and clinics and 7 medical groups, 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. Andrew Dean Alex Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marshall practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TriStar Hendersonville Medical Center | Available with a free account |
| +11 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Dean Alex Marshall is one of 1,088 emergency medicine physicians in Tennessee
Emergency medicine is Dr. Marshall's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Marshall's licenses on file in 2 states: Massachusetts and Illinois.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
- Illinois license
Emergency medicine physicians near Dr. Marshall
Counts of emergency medicine physicians 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. Andrew Dean Alex Marshall billed Medicare for 267 services in 2024
CMS data shows 267 Medicare services from Dr. Marshall across 4 procedure codes in 2024, for 266 Medicare patients. Medicare paid $32,802 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marshall's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2322024: 26715%
- Tests and treatments
- 2023: 112024: 0100%
Dr. Marshall compared with the Tennessee median for emergency medicine physicians, 2024
- Dr. Marshall
- Tennessee median
- Medicare services
- 267vs 266Close to median
- Medicare patients
- 266vs 257Close to median
Medians across 1,079 emergency medicine physicians in Tennessee with Dmand AI profiles that report each measure.
Dr. Marshall'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 Dr. Marshall?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marshall and other emergency medicine physicians in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Dean Alex Marshall treated 266 Medicare patients in 2024, average age 71
CMS counts 266 Medicare patients who saw Dr. Marshall in 2024. The largest group is 65 to 74, with 93 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 1.95, 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. Marshall's median patient age at 59, with 62% women.
Dr. Marshall's Medicare patients by age, 2024
Dr. Marshall's Medicare patients by sex, 2024
- Women14856%
- Men11844%
Chronic conditions among Dr. Marshall's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Anxiety48%
- Mood disorders46%
- Ischemic heart disease44%
- Depression42%
- Chronic kidney disease39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marshall'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
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Dean Alex Marshall wrote 78 Medicare Part D claims in 2024
In 2024, Dr. Marshall wrote 78 Medicare Part D claims for 59 patients. 94% of them were for generic drugs.
Dr. Marshall's Part D claims by kind of drug, 2024
- Generic73 claims94%
- Brand-name and other5 claims6%
Drug classes CMS tracks in Dr. Marshall's Part D claims, 2024
- Opioids18%14 of 78 claims
- Antibiotics35%27 of 78 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Andrew Dean Alex Marshall takes part in Medicare
Dr. Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Andrew Dean Alex Marshall has 8 publications on record
Dmand AI links 8 papers to Dr. Marshall, published from 2021 to 2025. 2022 was the busiest year, with 2. Dr. Marshall has published most often in JMIR Form Res. Dr. Marshall's most frequent co-authors are Peter R. Chai, MD, Christopher William Baugh, MBA, MD and Paul C. Chen, MBA, MD.
Dr. Marshall's papers by year, 2021 to 2025
Dr. Marshall's most frequent co-authors
- Peter R. Chai, MD3 shared papers
- Christopher William Baugh, MBA, MD2 shared papers
- Paul C. Chen, MBA, MD2 shared papers
Recent publications by Dr. Marshall
See who Dr. Marshall researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marshall works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Andrew Dean Alex Marshall received $15 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Marshall from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $15.
Companies that paid Dr. Marshall the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew Dean Alex Marshall graduated from Meharry Medical College School of Medicine
Dr. Marshall graduated from Meharry Medical College School of Medicine in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Andrew Dean Alex Marshall'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 (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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Andrew Dean Alex Marshall
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. Andrew Dean Alex Marshall's NPI number?
Dr. Andrew Dean Alex Marshall's NPI number is 1609257609. It was assigned on June 16, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Dean Alex Marshall?
Dr. Andrew Dean Alex Marshall is an emergency medicine physician in Hendersonville, Tennessee. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Andrew Dean Alex Marshall practice?
Dr. Marshall practices at 355 New Shackle Island Rd, Hendersonville, TN 37075. Dr. Marshall's primary practice is TriStar Hendersonville Medical Center in Hendersonville, Tennessee, part of HCA Healthcare. Dmand AI also links Dr. Marshall to 2 hospitals, 8 group practices and clinics and 7 medical groups.
What is Dr. Andrew Dean Alex Marshall's office phone number?
The practice phone on file for Dr. Marshall is (615) 338-1000.
What is Dr. Andrew Dean Alex Marshall's medical license number?
Dr. Marshall holds Massachusetts license 274195, one of the licenses on file in 2 states.
Which states has Dr. Andrew Dean Alex Marshall been licensed in?
Dmand AI has state licenses on file for Dr. Marshall in Massachusetts and Illinois.
Which hospitals is Dr. Andrew Dean Alex Marshall affiliated with?
Dr. Marshall practices at TriStar Hendersonville Medical Center in Hendersonville, Tennessee. Dr. Marshall is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Marshall to 2 more hospitals.
What medical group is Dr. Andrew Dean Alex Marshall part of?
Dr. Marshall is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Marshall to 7 more medical groups.
Does Dr. Andrew Dean Alex Marshall accept Medicare?
Yes. CMS data shows Dr. Marshall billed Medicare for 267 services in 2024, and Dr. Marshall accepts Medicare assignment.
How many Medicare patients does Dr. Andrew Dean Alex Marshall see?
CMS counts 266 Medicare patients who saw Dr. Marshall in 2024, with an average age of 71.
Show 6 more questionsShow fewer questions
What services does Dr. Andrew Dean Alex Marshall bill to Medicare?
In 2024, Dr. Marshall's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and hospital inpatient care (99223).
Where did Dr. Andrew Dean Alex Marshall go to medical school?
Dr. Marshall graduated from Meharry Medical College School of Medicine in 2015.
Has Dr. Andrew Dean Alex Marshall received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Marshall from 1 company from 2016 to 2016. The largest total came from CSL Behring.
How long has Dr. Andrew Dean Alex Marshall been practicing?
Dr. Marshall graduated from medical school in 2015, 11 years ago.
Does Dr. Andrew Dean Alex Marshall do research?
Dmand AI links 8 publications to Dr. Marshall, published from 2021 to 2025.
Who does Dr. Andrew Dean Alex Marshall publish with?
Dr. Marshall's most frequent co-authors are Peter R. Chai, MD (3 shared papers), Christopher William Baugh, MBA, MD (2 shared papers) and Paul C. Chen, MBA, MD (2 shared papers).
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