Histocytological Preparation TechniquesImage Processing, Computer-AssistedImaging, Three-Dimensional
Dr. John E. Keyser III, MD
NPI1336146042
- Medicare services, 2021
- 372
- Part D claims, 2021
- 30
- Publications
- 6
- Industry payments
- $2,422
- Insurance carriers
- 1
- Practice address
- 4535 Harding Pike Ste 304, Nashville, TN 37205-2120
- Practice phone
- Call (615) 269-9007
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Keyser'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. John E. Keyser III is a vascular surgeon in Nashville, Tennessee
Dr. Keyser practices in Nashville, Tennessee.
Dr. Keyser's NPI, 1336146042, was assigned on July 7, 2005. Dr. Keyser graduated from University of Illinois College of Medicine - Chicago in 1980. Dr. Keyser holds Tennessee license TN14538.
NPI and contact details
- NPI
- 1336146042NPI Registry (opens in a new tab)
- NPI enumeration date
- July 7, 2005
- NPI status
- Active
- Practice phone
- (615) 269-9007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John E. Keyser III's practice address is in Nashville, Tennessee
Dr. Keyser's practice address in the NPI Registry is 4535 Harding Pike Ste 304, Nashville, TN 37205-2120. The practice phone is (615) 269-9007.
- NPI Registry address4535 Harding Pike Ste 304, Nashville, TN 37205-2120Phone(615) 269-9007
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John E. Keyser III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keyser practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Keyser's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John E. Keyser III is one of 118 vascular surgeons in Tennessee
Vascular surgery is Dr. Keyser's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dmand AI has Dr. Keyser's licenses on file in 2 states: Tennessee and Louisiana.
Specialties and state licenses
- Vascular surgery, TennesseePrimary
- Louisiana license
Vascular surgeons near Dr. Keyser
Counts of vascular 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. John E. Keyser III billed Medicare for 372 services in 2021
CMS data shows 372 Medicare services from Dr. Keyser across 8 procedure codes in 2021. Medicare paid $82,386 for them. Every service was in an office.
Medicare services, 2021372
Paid by Medicare$82,386
Procedure codes8
Dr. Keyser's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1552021: 18117%
- Tests and treatments
- 2020: 1402021: 1411%
- Surgery
- 2020: 1162021: 5057%
Dr. Keyser compared with the Tennessee median for vascular surgeons, 2021
- Dr. Keyser
- Tennessee median
- Medicare services
- 372vs 66444% below
- Part D claims
- 30vs 11875% below
Medians across 116 vascular surgeons in Tennessee with Dmand AI profiles that report each measure.
Dr. Keyser's most billed Medicare procedure codes, 2021
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. Keyser?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Keyser and other vascular surgeons in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John E. Keyser III's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Keyser's median patient age at 65, with 50% women.
Dr. Keyser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. John E. Keyser III wrote 30 Medicare Part D claims in 2021
In 2021, Dr. Keyser wrote 30 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $658 in total drug cost. In 2020, CMS named 41 claims across 2 drugs.
Part D claims, 202130
Drugs named by CMS2
Total drug cost$658
Dr. Keyser's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 412021: 3027%
Drugs named by CMS: 2 in 2021, 2 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John E. Keyser III has 6 publications on record
Dmand AI links 6 papers to Dr. Keyser in 2011. 2011 was the busiest year, with 3. The most frequent topics are Imaging, Three-Dimensional and Microtomy. Dr. Keyser has published most often in IEEE Trans Vis Comput Graph.
Papers6
Topics Dr. Keyser writes about most
- Imaging, Three-Dimensional
- Microtomy
Recent publications by Dr. Keyser
IEEE Trans Vis Comput Graph
IEEE Trans Vis Comput Graph
See who Dr. Keyser researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Keyser works with, so you can find a warm path to the right vascular surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John E. Keyser III received $2,422 in industry payments from 2016 to 2022
CMS Open Payments shows 66 general payments to Dr. Keyser from 16 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 68% of the total. Boston Scientific Corporation paid the most, $1,156.
General payments to Dr. Keyser by program year, 2016 to 2022
General payments to Dr. Keyser by kind, 2016 to 2022
$2.4Kin total
- Food and beverage$1,63568%
- Travel and lodging$78732%
Companies that paid Dr. Keyser the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John E. Keyser III has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Keyser, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Keyser
- 2013
- CMS Stage 1 EHR
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. John E. Keyser III graduated from University of Illinois College of Medicine - Chicago
Dr. Keyser graduated from University of Illinois College of Medicine - Chicago in 1980. Dr. Keyser is a member of ACS and SVS.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. John E. Keyser III accepts plans from 1 insurance carrier
Dr. Keyser is in network with 1 carrier, including Cigna. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Cigna
Plan types Dr. Keyser accepts, by number of carriers
- HMO1
- Medicare1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John E. Keyser III'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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John E. Keyser III
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. John E. Keyser III's NPI number?
Dr. John E. Keyser III's NPI number is 1336146042. It was assigned on July 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John E. Keyser III?
Dr. John E. Keyser III is a vascular surgeon in Nashville, Tennessee. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. John E. Keyser III practice?
Dr. Keyser practices at 4535 Harding Pike Ste 304, Nashville, TN 37205-2120.
What is Dr. John E. Keyser III's office phone number?
The practice phone on file for Dr. Keyser is (615) 269-9007.
What is Dr. John E. Keyser III's medical license number?
Dr. Keyser holds Tennessee license TN14538, one of the licenses on file in 2 states.
Which states has Dr. John E. Keyser III been licensed in?
Dmand AI has state licenses on file for Dr. Keyser in Tennessee (1982 to 2026) and Louisiana (1986 to 1987).
Does Dr. John E. Keyser III accept Medicare?
Yes. CMS data shows Dr. Keyser billed Medicare for 372 services in 2021.
What services does Dr. John E. Keyser III bill to Medicare?
In 2021, Dr. Keyser's most billed Medicare services were blood vessel study (93971), office visit, new patient (99203) and surgery: heart and blood vessels (36465).
Where did Dr. John E. Keyser III go to medical school?
Dr. Keyser graduated from University of Illinois College of Medicine - Chicago in 1980.
What drugs does Dr. John E. Keyser III prescribe most?
In 2021 Medicare Part D data, Dr. Keyser's most prescribed drugs by claims were Doxycycline Hyclate and Gentamicin Sulfate.
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Has Dr. John E. Keyser III received payments from drug or device companies?
CMS Open Payments shows $2,422 in general payments to Dr. Keyser from 16 companies from 2016 to 2022. The largest total came from Boston Scientific Corporation.
How long has Dr. John E. Keyser III been practicing?
Dr. Keyser graduated from medical school in 1980, 46 years ago.
Does Dr. John E. Keyser III do research?
Dmand AI links 6 publications to Dr. Keyser.
What insurance does Dr. John E. Keyser III accept?
Dr. Keyser is in network with 1 carrier, including Cigna. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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