Dr. John L. Gwin Jr., MD
- Medicare services, 2024
- 1,182
- Medicare patients, 2024
- 201
- Part D claims, 2024
- 184
- MIPS score, 2024
- 94
- Hospital affiliations
- 2
- Practice address
- 2525 Desales Ave, Chattanooga, TN 37404
- Practice phone
- Call (423) 495-2525
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Gwin'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 L. Gwin Jr. is a general surgeon in Chattanooga, Tennessee
Dr. Gwin practices at CommonSpirit - Memorial Hospital - Chattanooga in Chattanooga, Tennessee, part of CommonSpirit Health.
Dr. Gwin's NPI, 1861486839, was assigned on September 7, 2005. Dr. Gwin graduated from Yale University School of Medicine in 1984. Dr. Gwin holds Tennessee license 24584.
- NPI
- 1861486839NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254391279
- NPI enumeration date
- September 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 495-2525
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John L. Gwin Jr. practices at CommonSpirit - Memorial Hospital - Chattanooga in Chattanooga, Tennessee
Dr. Gwin's primary practice is CommonSpirit - Memorial Hospital - Chattanooga, at 2525 Desales Ave, Chattanooga, TN 37404 in Hamilton County. The practice phone is (423) 495-2525.
- CommonSpirit - Memorial Hospital - Chattanooga2525 Desales Ave, Chattanooga, TN 37404 · Hamilton CountyPhone(423) 495-2525
Source: Dmand AI Affiliation Data
Dr. John L. Gwin Jr. is affiliated with 6 sites of care and 1 medical group
Dr. Gwin's primary practice is CommonSpirit - Memorial Hospital - Chattanooga in Chattanooga, Tennessee, part of CommonSpirit Health. Dr. Gwin is also affiliated with CommonSpirit - Memorial Hospital - North Georgia. The medical group on file is Memorial Health Partners Foundation. Dmand AI also links Dr. Gwin to 3 more home health agencies and 1 group practice or clinic, 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. John L. Gwin Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gwin practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CommonSpirit - Memorial Hospital - Chattanooga | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John L. Gwin Jr. is one of 548 general surgeons in Tennessee
Surgery is Dr. Gwin's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Gwin is licensed in Tennessee.
Specialties and state licenses
- Surgery, TennesseePrimary
General surgeons near Dr. Gwin
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. John L. Gwin Jr. billed Medicare for 1,182 services in 2024
CMS data shows 1,182 Medicare services from Dr. Gwin across 13 procedure codes in 2024, for 201 Medicare patients. Medicare paid $64,822 for them.
Dr. Gwin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4942024: 495No change
- Surgery
- 2023: 5472024: 43620%
- Tests and treatments
- 2023: 2092024: 25120%
Where Dr. Gwin's Medicare services took place, 2024
- In an office313%
- In a facility1,15197%
Dr. Gwin compared with the Tennessee median for general surgeons, 2024
- Dr. Gwin
- Tennessee median
- Medicare services
- 1,182vs 1746.8 times
- Medicare patients
- 201vs 12265% above
- Part D claims
- 93vs 5279% above
Medians across 548 general surgeons in Tennessee with Dmand AI profiles that report each measure.
Dr. Gwin'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. Gwin and other general surgeons in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John L. Gwin Jr. treated 201 Medicare patients in 2024, average age 75
CMS counts 201 Medicare patients who saw Dr. Gwin in 2024. The largest group is 75 to 84, with 69 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 2.89, 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. Gwin's median patient age at 70, with 42% women.
Dr. Gwin's Medicare patients by age, 2024
Dr. Gwin's Medicare patients by sex, 2024
- Women9748%
- Men10452%
Chronic conditions among Dr. Gwin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Diabetes57%
- Chronic kidney disease51%
- Ischemic heart disease42%
- Atrial fibrillation39%
- Heart failure39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gwin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John L. Gwin Jr. wrote 184 Medicare Part D claims in 2024
In 2024, Dr. Gwin wrote 184 Medicare Part D claims for 83 patients. 87% of them were for generic drugs. CMS names the drug for 93 of them, across 5 drugs with 11 or more claims each, at $12,030 in total drug cost. In 2023, CMS named 143 claims across 7 drugs.
Dr. Gwin's Part D claims by kind of drug, 2024
- Generic160 claims87%
- Brand-name24 claims13%
Dr. Gwin'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. Gwin's Part D claims, 2024
- Opioids9%17 of 184 claims
- Antibiotics55%102 of 184 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: 1432024: 9335%
Drugs named by CMS: 5 in 2024, 7 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. John L. Gwin Jr. scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Gwin for performance year 2024, reported through an alternative payment model (APM). Dr. Gwin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 475 procedures of removal of tissue by Dr. Gwin, more than 97% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Gwin's MIPS scores, performance year 2024
- 94of 100Final score
- 92.6of 100Quality
- 93of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Gwin ranks in Medicare procedure volume
- Removal of tissue
- 97th percentile475 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. John L. Gwin Jr. received $107,058 in industry payments from 2016 to 2025
CMS Open Payments shows 483 general payments to Dr. Gwin from 35 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 68% of the total. Smith & Nephew, Inc. paid the most, $102,157.
General payments to Dr. Gwin by program year, 2016 to 2025
General payments to Dr. Gwin by kind, 2016 to 2025
- Speaker and faculty fees$73,00068%
- Travel and lodging$21,82720%
- Food and beverage$10,73010%
- Consulting fees$1,5001%
Companies that paid Dr. Gwin 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. John L. Gwin Jr. graduated from Yale University School of Medicine
Dr. Gwin graduated from Yale University School of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John L. Gwin Jr.'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)Clinician Public Reporting: Overall MIPS Performance (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) |
| 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. John L. Gwin Jr.
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 L. Gwin Jr.'s NPI number?
Dr. John L. Gwin Jr.'s NPI number is 1861486839. It was assigned on September 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John L. Gwin Jr.?
Dr. John L. Gwin Jr. is a general surgeon in Chattanooga, Tennessee. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. John L. Gwin Jr. practice?
Dr. Gwin practices at 2525 Desales Ave, Chattanooga, TN 37404. Dr. Gwin's primary practice is CommonSpirit - Memorial Hospital - Chattanooga in Chattanooga, Tennessee, part of CommonSpirit Health. Dmand AI also links Dr. Gwin to 3 home health agencies and 1 group practice or clinic.
What is Dr. John L. Gwin Jr.'s office phone number?
The practice phone on file for Dr. Gwin is (423) 495-2525.
What is Dr. John L. Gwin Jr.'s medical license number?
Dr. Gwin holds Tennessee license 24584.
Which hospitals is Dr. John L. Gwin Jr. affiliated with?
Dr. Gwin practices at CommonSpirit - Memorial Hospital - Chattanooga in Chattanooga, Tennessee. Dr. Gwin is also affiliated with CommonSpirit - Memorial Hospital - North Georgia.
What medical group is Dr. John L. Gwin Jr. part of?
Dr. Gwin is linked to Memorial Health Partners Foundation.
Does Dr. John L. Gwin Jr. accept Medicare?
Yes. CMS data shows Dr. Gwin billed Medicare for 1,182 services in 2024, and Dr. Gwin accepts Medicare assignment.
What is Dr. John L. Gwin Jr.'s MIPS score?
Dr. Gwin's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. John L. Gwin Jr. see?
CMS counts 201 Medicare patients who saw Dr. Gwin in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. John L. Gwin Jr. bill to Medicare?
In 2024, Dr. Gwin's most billed Medicare services were surgery: skin and soft tissue (11042), office visit, established patient (99213) and special service (99183).
Where did Dr. John L. Gwin Jr. go to medical school?
Dr. Gwin graduated from Yale University School of Medicine in 1984.
What drugs does Dr. John L. Gwin Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Gwin's most prescribed drugs by claims were Doxycycline Hyclate, Sulfamethoxazole-Trimethoprim and Santyl.
Has Dr. John L. Gwin Jr. received payments from drug or device companies?
CMS Open Payments shows $107,058 in general payments to Dr. Gwin from 35 companies from 2016 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Dr. John L. Gwin Jr. been practicing?
Dr. Gwin graduated from medical school in 1984, 42 years ago.
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