Dr. Thomas Kepner Mahan, MD
- Medicare services, 2024
- 405
- Medicare patients, 2024
- 207
- Part D claims, 2024
- 399
- MIPS score, 2024
- 92
- Hospital affiliations
- 1
- Practice address
- 1181 Orange Ave, Winter Park, FL 32789
- Practice phone
- Call (407) 647-1331
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgical Associates
Surgical practice · Winter Park, Florida
Find Dr. Mahan'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. Thomas Kepner Mahan is a general surgeon in Winter Park, Florida
Dr. Mahan practices at Surgical Associates in Winter Park, Florida.
Dr. Mahan's NPI, 1578568515, was assigned on June 16, 2005. Dr. Mahan graduated from University of Maryland School of Medicine - Baltimore in 1994. Dr. Mahan holds Florida license ME77745.
- NPI
- 1578568515NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951432525
- NPI enumeration date
- June 16, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (407) 647-1331
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Kepner Mahan practices at Surgical Associates in Winter Park, Florida
Dr. Mahan's primary practice is Surgical Associates, at 1181 Orange Ave, Winter Park, FL 32789. The practice phone is (407) 647-1331.
- Surgical Associates1181 Orange Ave, Winter Park, FL 32789Phone(407) 647-1331
Source: Dmand AI Affiliation Data
Dr. Thomas Kepner Mahan is affiliated with 3 sites of care and 2 medical groups
Dr. Mahan's primary practice is Surgical Associates in Winter Park, Florida. Dr. Mahan is also affiliated with AdventHealth Orlando. The medical group on file is North Florida Surgeons. Dmand AI also links Dr. Mahan to 1 more group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas Kepner Mahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mahan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgical Associates | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Kepner Mahan is one of 1,593 general surgeons in Florida
Surgery is Dr. Mahan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Mahan is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Mahan's licenses on file in 2 states: Florida and Louisiana.
Specialties and state licenses
- Surgery, FloridaPrimary
- Louisiana license
Clinical focus
Dmand AI lists abdominal hernia repair surgery, appendectomy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, groin hernia surgery, intestinal or bowel obstruction and mastectomy among the conditions Dr. Mahan treats.
General surgeons near Dr. Mahan
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. Thomas Kepner Mahan billed Medicare for 405 services in 2024
CMS data shows 405 Medicare services from Dr. Mahan across 9 procedure codes in 2024, for 207 Medicare patients. Medicare paid $43,090 for them.
Dr. Mahan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2982024: 36823%
- Surgery
- 2023: 162024: 37131%
Where Dr. Mahan's Medicare services took place, 2024
- In an office21854%
- In a facility18746%
Dr. Mahan compared with the Florida median for general surgeons, 2024
- Dr. Mahan
- Florida median
- Medicare services
- 405vs 1982.0 times
- Medicare patients
- 207vs 13356% above
- Part D claims
- 318vs 437.4 times
Medians across 1,425 general surgeons in Florida with Dmand AI profiles that report each measure.
Dr. Mahan'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. Mahan and other general surgeons in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Kepner Mahan treated 207 Medicare patients in 2024, average age 73
CMS counts 207 Medicare patients who saw Dr. Mahan in 2024. The largest group is 65 to 74, with 102 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.84, 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. Mahan's median patient age at 66, with 49% women.
Dr. Mahan's Medicare patients by age, 2024
Dr. Mahan's Medicare patients by sex, 2024
- Women11154%
- Men9646%
Chronic conditions among Dr. Mahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Ischemic heart disease44%
- Chronic kidney disease38%
- Diabetes36%
- Mood disorders31%
- Anxiety30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Kepner Mahan wrote 399 Medicare Part D claims in 2024
In 2024, Dr. Mahan wrote 399 Medicare Part D claims for 155 patients. 98% of them were for generic drugs. CMS names the drug for 318 of them, across 4 drugs with 11 or more claims each, at $1,033 in total drug cost. In 2023, CMS named 245 claims across 5 drugs.
Dr. Mahan's Part D claims by kind of drug, 2024
- Generic392 claims98%
- Brand-name and other7 claims2%
Dr. Mahan'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. Mahan's Part D claims, 2024
- Opioids32%126 of 399 claims
- Antibiotics6%22 of 399 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: 2452024: 31830%
Drugs named by CMS: 4 in 2024, 5 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. Thomas Kepner Mahan scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Mahan for performance year 2024, reported as part of a group. Dr. Mahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mahan as offering telehealth. CMS counts 23 procedures of hernia repair (minimally invasive) by Dr. Mahan, more than 91% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Mahan's MIPS scores, performance year 2024
- 92of 100Final score
- 88.3of 100Quality
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Mahan ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 91st percentile23 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)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 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 of tissue: 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. Thomas Kepner Mahan received $282,851 in industry payments from 2016 to 2025
CMS Open Payments shows 328 general payments to Dr. Mahan from 18 drug and device companies from 2016 to 2025. Education make up the largest share, 56% of the total. Intuitive Surgical, Inc. paid the most, $175,142.
General payments to Dr. Mahan by program year, 2016 to 2025
General payments to Dr. Mahan by kind, 2016 to 2025
- Education$159,04556%
- Consulting fees$87,92231%
- Food and beverage$11,4614%
- Speaker and faculty fees$10,6254%
- Other$13,7855%
Companies that paid Dr. Mahan 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 Kepner Mahan has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Mahan, most recently Checkbook Top Doc in 2011.
Awards and honors for Dr. Mahan
- 2011
- Checkbook Top Doc
- Undated
- ACS Fellow
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Thomas Kepner Mahan graduated from University of Maryland School of Medicine - Baltimore
Dr. Mahan graduated from University of Maryland School of Medicine - Baltimore in 1994. Dr. Mahan is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Thomas Kepner Mahan accepts plans from 18 insurance carriers
Dr. Mahan is in network with 18 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Cigna
- HCSC
- Humana
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +10 more carriersWith a free account
Plan types Dr. Mahan accepts, by number of carriers
- PPO12
- HMO10
- Medicare10
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas Kepner Mahan'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 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) |
| 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. Thomas Kepner Mahan
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 Kepner Mahan's NPI number?
Dr. Thomas Kepner Mahan's NPI number is 1578568515. It was assigned on June 16, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Kepner Mahan?
Dr. Thomas Kepner Mahan is a general surgeon in Winter Park, Florida. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Thomas Kepner Mahan practice?
Dr. Mahan practices at 1181 Orange Ave, Winter Park, FL 32789. Dr. Mahan's primary practice is Surgical Associates in Winter Park, Florida. Dmand AI also links Dr. Mahan to 1 group practice or clinic and 1 medical group.
What is Dr. Thomas Kepner Mahan's office phone number?
The practice phone on file for Dr. Mahan is (407) 647-1331.
What is Dr. Thomas Kepner Mahan's medical license number?
Dr. Mahan holds Florida license ME77745, one of the licenses on file in 2 states.
Which states has Dr. Thomas Kepner Mahan been licensed in?
Dmand AI has state licenses on file for Dr. Mahan in Florida (1999 to 2027) and Louisiana (1996 to 2013).
Which hospitals is Dr. Thomas Kepner Mahan affiliated with?
Dr. Mahan is affiliated with AdventHealth Orlando.
What medical group is Dr. Thomas Kepner Mahan part of?
Dr. Mahan is linked to North Florida Surgeons. Dmand AI links Dr. Mahan to 1 more medical group.
Does Dr. Thomas Kepner Mahan accept Medicare?
Yes. CMS data shows Dr. Mahan billed Medicare for 405 services in 2024, and Dr. Mahan accepts Medicare assignment.
Does Dr. Thomas Kepner Mahan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mahan as offering telehealth services.
Show 9 more questionsShow fewer questions
What is Dr. Thomas Kepner Mahan's MIPS score?
Dr. Mahan's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thomas Kepner Mahan see?
CMS counts 207 Medicare patients who saw Dr. Mahan in 2024, with an average age of 73.
Is Dr. Thomas Kepner Mahan board certified?
Yes. Dr. Mahan is board certified in surgery by the American Board of Surgery.
What services does Dr. Thomas Kepner Mahan bill to Medicare?
In 2024, Dr. Mahan's most billed Medicare services were hospital inpatient care (99231), office visit, established patient (99213) and office visit, new patient (99203).
Where did Dr. Thomas Kepner Mahan go to medical school?
Dr. Mahan graduated from University of Maryland School of Medicine - Baltimore in 1994.
What drugs does Dr. Thomas Kepner Mahan prescribe most?
In 2024 Medicare Part D data, Dr. Mahan's most prescribed drugs by claims were Cyclobenzaprine HCl, Hydrocodone-Acetaminophen and Ibuprofen.
Has Dr. Thomas Kepner Mahan received payments from drug or device companies?
CMS Open Payments shows $282,851 in general payments to Dr. Mahan from 18 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Thomas Kepner Mahan been practicing?
Dr. Mahan graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Thomas Kepner Mahan accept?
Dr. Mahan is in network with 18 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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