Dr. Timothy Graham Johnson, MD
- Medicare services, 2024
- 169
- Medicare patients, 2024
- 117
- Part D claims, 2024
- 118
- Hospital affiliations
- 1
- Industry payments
- $10,499
- Practice address
- 4323 Carothers Parkway, Franklin, TN 37067
- Practice phone
- Call (615) 435-7972
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Williamson Surgery Center - Franklin
Surgery Center - Not Medicare-Certified · Franklin, Tennessee
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Timothy Graham Johnson is a general surgeon in Franklin, Tennessee
Dr. Johnson practices at Williamson Surgery Center - Franklin in Franklin, Tennessee.
Dr. Johnson's NPI, 1538488648, was assigned on May 28, 2010. Dr. Johnson holds Tennessee license 53854.
- NPI
- 1538488648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416198221
- NPI enumeration date
- May 28, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 435-7972
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Timothy Graham Johnson practices at Williamson Surgery Center - Franklin in Franklin, Tennessee
Dr. Johnson's primary practice is Williamson Surgery Center - Franklin, at 4323 Carothers Parkway, Franklin, TN 37067. The practice phone is (615) 435-7972.
- Williamson Surgery Center - Franklin4323 Carothers Parkway, Franklin, TN 37067Phone(615) 435-7972
Source: Dmand AI Affiliation Data
Dr. Timothy Graham Johnson is affiliated with 3 sites of care and 1 medical group
Dr. Johnson's primary practice is Williamson Surgery Center - Franklin in Franklin, Tennessee. Dr. Johnson is also affiliated with Williamson Medical Center. The medical group on file is Williamson Health Medical Group. Dmand AI also links Dr. Johnson to 1 more group practice or clinic, named with a free account. Dr. Johnson's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy Graham Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Williamson Surgery Center - Franklin | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Timothy Graham Johnson is one of 548 general surgeons in Tennessee
Surgery is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Johnson is licensed in Tennessee.
Specialties and state licenses
- Surgery, TennesseePrimary
General surgeons near Dr. Johnson
Counts of general surgeons 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. Timothy Graham Johnson billed Medicare for 169 services in 2024
CMS data shows 169 Medicare services from Dr. Johnson across 8 procedure codes in 2024, for 117 Medicare patients. Medicare paid $15,201 for them.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1722024: 13621%
- Imaging
- 2023: 242024: 228%
- Surgery
- 2023: 272024: 1159%
Where Dr. Johnson's Medicare services took place, 2024
- In an office6237%
- In a facility10763%
Dr. Johnson compared with the Tennessee median for general surgeons, 2024
- Dr. Johnson
- Tennessee median
- Medicare services
- 169vs 174Close to median
- Medicare patients
- 117vs 122Close to median
- Part D claims
- 62vs 5219% above
Medians across 548 general surgeons in Tennessee with Dmand AI profiles that report each measure.
Dr. Johnson'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. Johnson and other general surgeons in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Timothy Graham Johnson treated 117 Medicare patients in 2024, average age 74
CMS counts 117 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 52 patients. 69% of them have high blood pressure, and 62% have high cholesterol. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 58, with 48% women.
Dr. Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Johnson's Medicare patients by sex, 2024
- Women4841%
- Men6959%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High blood pressure69%
- High cholesterol62%
- Arthritis41%
- Chronic kidney disease29%
- Ischemic heart disease28%
- Mood disorders26%
- Diabetes25%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Timothy Graham Johnson wrote 118 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 118 Medicare Part D claims for 72 patients. 98% of them were for generic drugs. CMS names the drug for 62 of them, across 1 drug with 11 or more claims each, at $214 in total drug cost. In 2023, CMS named 86 claims across 2 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic116 claims98%
- Brand-name and other2 claims2%
Dr. Johnson'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. Johnson's Part D claims, 2024
- Opioids58%68 of 118 claims
- Antibiotics20%24 of 118 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: 862024: 6228%
Drugs named by CMS: 1 in 2024, 2 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. Timothy Graham Johnson ranks in the 72nd percentile for hernia repair (minimally invasive) in Medicare
Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of hernia repair (minimally invasive) by Dr. Johnson, more than 72% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Johnson ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 72nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Timothy Graham Johnson received $10,499 in industry payments from 2017 to 2025
CMS Open Payments shows 100 general payments to Dr. Johnson from 14 drug and device companies from 2017 to 2025. Travel and lodging make up the largest share, 63% of the total. Intuitive Surgical, Inc. paid the most, $8,990.
General payments to Dr. Johnson by program year, 2017 to 2025
General payments to Dr. Johnson by kind, 2017 to 2025
- Travel and lodging$6,64663%
- Food and beverage$2,18521%
- Consulting fees$9009%
- Speaker and faculty fees$6957%
- Education$731%
Companies that paid Dr. Johnson the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Timothy Graham Johnson'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Timothy Graham Johnson
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. Timothy Graham Johnson's NPI number?
Dr. Timothy Graham Johnson's NPI number is 1538488648. It was assigned on May 28, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy Graham Johnson?
Dr. Timothy Graham Johnson is a general surgeon in Franklin, Tennessee. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Timothy Graham Johnson practice?
Dr. Johnson practices at 4323 Carothers Parkway, Franklin, TN 37067. Dr. Johnson's primary practice is Williamson Surgery Center - Franklin in Franklin, Tennessee. Dmand AI also links Dr. Johnson to 1 group practice or clinic.
What is Dr. Timothy Graham Johnson's office phone number?
The practice phone on file for Dr. Johnson is (615) 435-7972.
What is Dr. Timothy Graham Johnson's medical license number?
Dr. Johnson holds Tennessee license 53854.
Which hospitals is Dr. Timothy Graham Johnson affiliated with?
Dr. Johnson is affiliated with Williamson Medical Center.
What medical group is Dr. Timothy Graham Johnson part of?
Dr. Johnson is linked to Williamson Health Medical Group.
Does Dr. Timothy Graham Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 169 services in 2024, and Dr. Johnson accepts Medicare assignment.
How many Medicare patients does Dr. Timothy Graham Johnson see?
CMS counts 117 Medicare patients who saw Dr. Johnson in 2024, with an average age of 74.
What services does Dr. Timothy Graham Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and office visit, established patient (99213).
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What drugs does Dr. Timothy Graham Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Timothy Graham Johnson received payments from drug or device companies?
CMS Open Payments shows $10,499 in general payments to Dr. Johnson from 14 companies from 2017 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Timothy Graham Johnson been practicing?
Dr. Johnson graduated from medical school in 2010, 16 years ago.
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