Dr. Thomas Tarn, DO
- Medicare services, 2024
- 67
- Medicare patients, 2024
- 205
- Hospital affiliations
- 2
- Industry payments
- $81
- Medical groups
- 5
- Practice address
- 400 N State of Franklin Rd, Johnson City, TN 37604
- Practice phone
- Call (423) 431-6111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Johnson City Medical Center/Niswonger Children's
Johnson City, Tennessee
Find Dr. Tarn's professional email, personal email and mobile number
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Dr. Thomas Tarn is an anesthesiologist in Johnson City, Tennessee
Dr. Tarn practices at Johnson City Medical Center/Niswonger Children's in Johnson City, Tennessee.
Dr. Tarn's NPI, 1538101787, was assigned on June 12, 2006. Dr. Tarn graduated from Michigan State University College of Osteopathic Medicine in 1991. Dr. Tarn holds Michigan license 5101011508.
- NPI
- 1538101787NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749271732
- NPI enumeration date
- June 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 431-6111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Tarn practices at Johnson City Medical Center/Niswonger Children's in Johnson City, Tennessee
Dr. Tarn's primary practice is Johnson City Medical Center/Niswonger Children's, at 400 N State of Franklin Rd, Johnson City, TN 37604 in Washington County. The practice phone is (423) 431-6111.
- Johnson City Medical Center/Niswonger Children's400 N State of Franklin Rd, Johnson City, TN 37604 · Washington CountyPhone(423) 431-6111
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas Tarn is affiliated with 3 sites of care and 5 medical groups
Dr. Tarn's primary practice is Johnson City Medical Center/Niswonger Children's in Johnson City, Tennessee. Dr. Tarn is also affiliated with Johnson City Medical Center. The medical group on file is Paragon Anesthesia. Dmand AI also links Dr. Tarn to 1 more hospital and 4 medical groups, each named with a free account.
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. Thomas Tarn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tarn practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johnson City Medical Center/Niswonger Children's | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Tarn is one of 734 anesthesiologists in Tennessee
Anesthesiology is Dr. Tarn's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Tarn is licensed in Michigan.
Specialties and state licenses
- Anesthesiology, MichiganPrimary
Anesthesiologists near Dr. Tarn
Counts of anesthesiologists 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. Thomas Tarn billed Medicare for 67 services in 2024
CMS data shows 67 Medicare services from Dr. Tarn across 3 procedure codes in 2024, for 205 Medicare patients. Medicare paid $5,181 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tarn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 752024: 6711%
Dr. Tarn compared with the Tennessee median for anesthesiologists, 2024
- Dr. Tarn
- Tennessee median
- Medicare services
- 67vs 8319% below
- Medicare patients
- 205vs 14739% above
Medians across 729 anesthesiologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Tarn'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. Tarn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tarn and other anesthesiologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Tarn treated 205 Medicare patients in 2024, average age 73
CMS counts 205 Medicare patients who saw Dr. Tarn in 2024. The largest group is 75 to 84, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.77, 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. Tarn's median patient age at 69, with 52% women.
Dr. Tarn's Medicare patients by age, 2024
Dr. Tarn's Medicare patients by sex, 2024
- Women10652%
- Men9948%
Chronic conditions among Dr. Tarn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Mood disorders43%
- Anxiety40%
- Ischemic heart disease40%
- Depression38%
- Diabetes38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tarn'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
- Women52%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Thomas Tarn takes part in Medicare
Dr. Tarn 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. Thomas Tarn received $81 in industry payments from 2016 to 2025
CMS Open Payments shows 4 general payments to Dr. Tarn from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $48.
General payments to Dr. Tarn by program year, 2016 to 2025
Companies that paid Dr. Tarn the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Tarn graduated from Michigan State University College of Osteopathic Medicine
Dr. Tarn graduated from Michigan State University College of Osteopathic Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Tarn'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Thomas Tarn
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. Thomas Tarn's NPI number?
Dr. Thomas Tarn's NPI number is 1538101787. It was assigned on June 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Tarn?
Dr. Thomas Tarn is an anesthesiologist in Johnson City, Tennessee. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Thomas Tarn practice?
Dr. Tarn practices at 400 N State of Franklin Rd, Johnson City, TN 37604. Dr. Tarn's primary practice is Johnson City Medical Center/Niswonger Children's in Johnson City, Tennessee. Dmand AI also links Dr. Tarn to 1 hospital and 4 medical groups.
What is Dr. Thomas Tarn's office phone number?
The practice phone on file for Dr. Tarn is (423) 431-6111.
What is Dr. Thomas Tarn's medical license number?
Dr. Tarn holds Michigan license 5101011508.
Which hospitals is Dr. Thomas Tarn affiliated with?
Dr. Tarn is affiliated with Johnson City Medical Center. Dmand AI links Dr. Tarn to 1 more hospital.
What medical group is Dr. Thomas Tarn part of?
Dr. Tarn is linked to Paragon Anesthesia. Dmand AI links Dr. Tarn to 4 more medical groups.
Does Dr. Thomas Tarn accept Medicare?
Yes. CMS data shows Dr. Tarn billed Medicare for 67 services in 2024, and Dr. Tarn accepts Medicare assignment.
How many Medicare patients does Dr. Thomas Tarn see?
CMS counts 205 Medicare patients who saw Dr. Tarn in 2024, with an average age of 73.
What services does Dr. Thomas Tarn bill to Medicare?
In 2024, Dr. Tarn's most billed Medicare services were anesthesia (00910), anesthesia (00731) and anesthesia (00670).
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Where did Dr. Thomas Tarn go to medical school?
Dr. Tarn graduated from Michigan State University College of Osteopathic Medicine in 1991.
Has Dr. Thomas Tarn received payments from drug or device companies?
CMS Open Payments shows $81 in general payments to Dr. Tarn from 3 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Thomas Tarn been practicing?
Dr. Tarn graduated from medical school in 1991, 35 years ago.
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