Dr. Mark Thomas Simpson, MD
- Medicare services, 2024
- 180
- Medicare patients, 2024
- 47
- Part D claims, 2024
- 2,239
- Industry payments
- $11
- Affiliated sites
- 1
- Practice address
- 5798 Hixson Home Pl, Hixson, TN 37343
- Practice phone
- Call (423) 298-7071
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Wellness Clinic
Hixson, Tennessee
Find Dr. Simpson'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 Thomas Simpson is a family medicine physician in Hixson, Tennessee
Dr. Simpson practices at The Wellness Clinic in Hixson, Tennessee.
Dr. Simpson's NPI, 1407837891, was assigned on November 11, 2005. Dr. Simpson graduated from University of Tennessee, Hsc, College of Medicine in 1982. Dr. Simpson holds Tennessee license 19467.
- NPI
- 1407837891NPI Registry (opens in a new tab)
- NPI enumeration date
- November 11, 2005
- NPI status
- Active
- Practice phone
- (423) 298-7071
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark Thomas Simpson practices at The Wellness Clinic in Hixson, Tennessee
Dr. Simpson's primary practice is The Wellness Clinic, at 5798 Hixson Home Pl, Hixson, TN 37343 in Hamilton County. The practice phone is (423) 298-7071.
- The Wellness Clinic5798 Hixson Home Pl, Hixson, TN 37343 · Hamilton CountyPhone(423) 298-7071
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Thomas Simpson is affiliated with 2 sites of care
Dr. Simpson's primary practice is The Wellness Clinic in Hixson, Tennessee. Dmand AI also links Dr. Simpson to 1 physician office, 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 Thomas Simpson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simpson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Wellness Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Thomas Simpson is one of 2,430 family medicine physicians in Tennessee
Family medicine is Dr. Simpson's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Simpson is licensed in Tennessee.
Specialties and state licenses
- Family medicine, TennesseePrimary
Family medicine physicians near Dr. Simpson
Counts of family 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. Mark Thomas Simpson billed Medicare for 180 services in 2024
CMS data shows 180 Medicare services from Dr. Simpson across 6 procedure codes in 2024, for 47 Medicare patients. Medicare paid $12,916 for them. Every service was in an office.
Dr. Simpson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 512024: 148190%
- Surgery
- 2023: 02024: 20
- Other services
- 2023: 02024: 12
Dr. Simpson compared with the Tennessee median for family medicine physicians, 2024
- Dr. Simpson
- Tennessee median
- Medicare services
- 180vs 63071% below
- Medicare patients
- 47vs 18174% below
- Part D claims
- 1,731vs 1,32231% above
Medians across 2,475 family medicine physicians in Tennessee with Dmand AI profiles that report each measure.
Dr. Simpson'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. Mark Thomas Simpson treated 47 Medicare patients in 2024, average age 72
CMS counts 47 Medicare patients who saw Dr. Simpson in 2024. The largest group is 65 to 74, with 26 patients. 75% of them have high blood pressure, and 51% have high cholesterol. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Simpson's median patient age at 54, with 51% women.
Dr. Simpson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Simpson's Medicare patients by sex, 2024
- Women2247%
- Men2553%
Chronic conditions among Dr. Simpson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol51%
- Arthritis32%
- Anxiety23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simpson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Thomas Simpson wrote 2,239 Medicare Part D claims in 2024
In 2024, Dr. Simpson wrote 2,239 Medicare Part D claims for 143 patients. 91% of them were for generic drugs. CMS names the drug for 1,731 of them, across 53 drugs with 11 or more claims each, at $72,830 in total drug cost. In 2023, CMS named 1,402 claims across 56 drugs.
Dr. Simpson's Part D claims by kind of drug, 2024
- Generic2,027 claims91%
- Brand-name189 claims8%
- Other23 claims1%
Dr. Simpson'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. Simpson's Part D claims, 2024
- Opioids8%169 of 2,239 claims
- Antibiotics11%251 of 2,239 claims
- Antipsychotics, patients 65 and over2%35 of 2,239 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: 1,4022024: 1,73123%
Drugs named by CMS: 53 in 2024, 56 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
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Dr. Mark Thomas Simpson received $11 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Simpson from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Daiichi Sankyo Inc. paid the most, $11.
Companies that paid Dr. Simpson 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. Mark Thomas Simpson graduated from University of Tennessee, Hsc, College of Medicine
Dr. Simpson graduated from University of Tennessee, Hsc, College of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Thomas Simpson'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) |
| 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 Thomas Simpson
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 Thomas Simpson's NPI number?
Dr. Mark Thomas Simpson's NPI number is 1407837891. It was assigned on November 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Thomas Simpson?
Dr. Mark Thomas Simpson is a family medicine physician in Hixson, Tennessee. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark Thomas Simpson practice?
Dr. Simpson practices at 5798 Hixson Home Pl, Hixson, TN 37343. Dr. Simpson's primary practice is The Wellness Clinic in Hixson, Tennessee. Dmand AI also links Dr. Simpson to 1 physician office.
What is Dr. Mark Thomas Simpson's office phone number?
The practice phone on file for Dr. Simpson is (423) 298-7071.
What is Dr. Mark Thomas Simpson's medical license number?
Dr. Simpson holds Tennessee license 19467.
Does Dr. Mark Thomas Simpson accept Medicare?
Yes. CMS data shows Dr. Simpson billed Medicare for 180 services in 2024.
How many Medicare patients does Dr. Mark Thomas Simpson see?
CMS counts 47 Medicare patients who saw Dr. Simpson in 2024, with an average age of 72.
What services does Dr. Mark Thomas Simpson bill to Medicare?
In 2024, Dr. Simpson's most billed Medicare services were office visit, established patient (99214), care management and other visits (99442) and office visit, established patient (99213).
Where did Dr. Mark Thomas Simpson go to medical school?
Dr. Simpson graduated from University of Tennessee, Hsc, College of Medicine in 1982.
What drugs does Dr. Mark Thomas Simpson prescribe most?
In 2024 Medicare Part D data, Dr. Simpson's most prescribed drugs by claims were Cephalexin, Gabapentin and Oxycodone HCl.
Has Dr. Mark Thomas Simpson received payments from drug or device companies?
CMS Open Payments shows $11 in general payments to Dr. Simpson from 1 company from 2016 to 2016. The largest total came from Daiichi Sankyo Inc.
How long has Dr. Mark Thomas Simpson been practicing?
Dr. Simpson graduated from medical school in 1982, 44 years ago.
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