Dr. Crystal Hamilton McMahan, MD
- Medicare services, 2024
- 3,017
- Medicare patients, 2024
- 317
- Part D claims, 2024
- 66
- MIPS score, 2024
- 94
- Hospital affiliations
- 4
- Practice address
- 4000 Kresge Way, Louisville, KY 40207
- Practice phone
- Call (502) 897-8100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. McMahan'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. Crystal Hamilton McMahan is a radiation oncologist in Louisville, Kentucky
Dr. McMahan practices at Baptist Health Louisville in Louisville, Kentucky, part of Baptist Health.
Dr. McMahan's NPI, 1396969200, was assigned on April 12, 2007. Dr. McMahan graduated from University of Louisville School of Medicine in 2006. Dr. McMahan holds Kentucky license 42203.
- NPI
- 1396969200NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416016548
- NPI enumeration date
- April 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (502) 897-8100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Crystal Hamilton McMahan practices at Baptist Health Louisville in Louisville, Kentucky
Dr. McMahan's primary practice is Baptist Health Louisville, at 4000 Kresge Way, Louisville, KY 40207 in Jefferson County. The practice phone is (502) 897-8100.
- Baptist Health Louisville4000 Kresge Way, Louisville, KY 40207 · Jefferson CountyPhone(502) 897-8100
Source: Dmand AI Affiliation Data
Dr. Crystal Hamilton McMahan is affiliated with 7 sites of care and 2 medical groups
Dr. McMahan's primary practice is Baptist Health Louisville in Louisville, Kentucky, part of Baptist Health. Dr. McMahan is also affiliated with Norton Hospital. The medical group on file is Baptist Health Medical Group. Dmand AI also links Dr. McMahan to 2 more hospitals, 2 group practices and clinics, 1 therapy and rehab clinic and 1 medical group, 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. Crystal Hamilton McMahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMahan practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baptist Health Louisville | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Baptist Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Crystal Hamilton McMahan is one of 90 radiation oncologists in Kentucky
Radiation oncology is Dr. McMahan's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. McMahan is licensed in Kentucky.
Specialties and state licenses
- Radiation oncology, KentuckyPrimary
Radiation oncologists near Dr. McMahan
Counts of radiation oncologists 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. Crystal Hamilton McMahan billed Medicare for 3,017 services in 2024
CMS data shows 3,017 Medicare services from Dr. McMahan across 23 procedure codes in 2024, for 317 Medicare patients. Medicare paid $226,798 for them.
Dr. McMahan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,7422024: 2,42312%
- Office and hospital visits
- 2023: 3022024: 38929%
- Other services
- 2023: 472024: 205336%
Where Dr. McMahan's Medicare services took place, 2024
- In an office281%
- In a facility2,98999%
Dr. McMahan compared with the Kentucky median for radiation oncologists, 2024
- Dr. McMahan
- Kentucky median
- Medicare services
- 3,017vs 1,0962.8 times
- Medicare patients
- 317vs 1562.0 times
- Part D claims
- 12vs 4473% below
Medians across 89 radiation oncologists in Kentucky with Dmand AI profiles that report each measure.
Dr. McMahan'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. McMahan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McMahan and other radiation oncologists in Kentucky.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Crystal Hamilton McMahan treated 317 Medicare patients in 2024, average age 75
CMS counts 317 Medicare patients who saw Dr. McMahan in 2024. The largest group is 65 to 74, with 144 patients. 75% of them have cancer, and 75% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.69, 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. McMahan's median patient age at 69, with 80% women.
Dr. McMahan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. McMahan's Medicare patients by sex, 2024
- Women21668%
- Men10132%
Chronic conditions among Dr. McMahan's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Ischemic heart disease39%
- COPD33%
- Anxiety31%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. McMahan'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
- Women80%
- Men20%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Crystal Hamilton McMahan wrote 66 Medicare Part D claims in 2024
In 2024, Dr. McMahan wrote 66 Medicare Part D claims for 44 patients. 80% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $147 in total drug cost. In 2021, CMS named 13 claims across 1 drug.
Dr. McMahan's Part D claims by kind of drug, 2024
- Generic53 claims80%
- Brand-name13 claims20%
Dr. McMahan's most prescribed drugs by claims, 2023
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, 2021 to 2023
- 2021
- 2023
- Claims for drugs CMS names
- 2021: 132023: 128%
Drugs named by CMS: 1 in 2023, 1 in 2021.
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. Crystal Hamilton McMahan 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. McMahan for performance year 2024, reported through an alternative payment model (APM). Dr. McMahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. McMahan's MIPS scores, performance year 2024
- 94of 100Final score
- 87.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Crystal Hamilton McMahan received $927 in industry payments from 2016 to 2025
CMS Open Payments shows 17 general payments to Dr. McMahan from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $257.
General payments to Dr. McMahan by program year, 2016 to 2025
Companies that paid Dr. McMahan 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. Crystal Hamilton McMahan graduated from University of Louisville School of Medicine
Dr. McMahan graduated from University of Louisville School of Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Crystal Hamilton McMahan'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) |
| 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. Crystal Hamilton McMahan
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. Crystal Hamilton McMahan's NPI number?
Dr. Crystal Hamilton McMahan's NPI number is 1396969200. It was assigned on April 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Crystal Hamilton McMahan?
Dr. Crystal Hamilton McMahan is a radiation oncologist in Louisville, Kentucky. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Crystal Hamilton McMahan practice?
Dr. McMahan practices at 4000 Kresge Way, Louisville, KY 40207. Dr. McMahan's primary practice is Baptist Health Louisville in Louisville, Kentucky, part of Baptist Health. Dmand AI also links Dr. McMahan to 2 hospitals, 2 group practices and clinics, 1 therapy and rehab clinic and 1 medical group.
What is Dr. Crystal Hamilton McMahan's office phone number?
The practice phone on file for Dr. McMahan is (502) 897-8100.
What is Dr. Crystal Hamilton McMahan's medical license number?
Dr. McMahan holds Kentucky license 42203.
Which hospitals is Dr. Crystal Hamilton McMahan affiliated with?
Dr. McMahan practices at Baptist Health Louisville in Louisville, Kentucky. Dr. McMahan is also affiliated with Norton Hospital. Dmand AI links Dr. McMahan to 2 more hospitals.
What medical group is Dr. Crystal Hamilton McMahan part of?
Dr. McMahan is linked to Baptist Health Medical Group. Dmand AI links Dr. McMahan to 1 more medical group.
Does Dr. Crystal Hamilton McMahan accept Medicare?
Yes. CMS data shows Dr. McMahan billed Medicare for 3,017 services in 2024, and Dr. McMahan accepts Medicare assignment.
What is Dr. Crystal Hamilton McMahan's MIPS score?
Dr. McMahan'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. Crystal Hamilton McMahan see?
CMS counts 317 Medicare patients who saw Dr. McMahan in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Crystal Hamilton McMahan bill to Medicare?
In 2024, Dr. McMahan's most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77334).
Where did Dr. Crystal Hamilton McMahan go to medical school?
Dr. McMahan graduated from University of Louisville School of Medicine in 2006.
What drugs does Dr. Crystal Hamilton McMahan prescribe most?
In 2023 Medicare Part D data, Dr. McMahan's most prescribed drugs by claims were Ondansetron ODT.
Has Dr. Crystal Hamilton McMahan received payments from drug or device companies?
CMS Open Payments shows $927 in general payments to Dr. McMahan from 8 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Crystal Hamilton McMahan been practicing?
Dr. McMahan graduated from medical school in 2006, 20 years ago.
Selling to radiation oncology practices?
See radiation oncologists in Kentucky by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card