Dr. Kaci Alexander, DO
- Medicare services, 2024
- 302
- Medicare patients, 2024
- 193
- Part D claims, 2019
- 14
- MIPS score, 2024
- 100
- Hospital affiliations
- 4
- Practice address
- 1 St Elizabeth Blvd, O'Fallon, IL 62269
- Practice phone
- Call (217) 492-9651
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
HSHS St. Elizabeth's Hospital
O'Fallon, Illinois
Find Dr. Alexander's professional email, personal email and mobile number
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Dr. Kaci Alexander is an internist in O'Fallon, Illinois
Dr. Alexander practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois.
Dr. Alexander's NPI, 1427439363, was assigned on June 16, 2015. Dr. Alexander holds Missouri license 2015018533.
- NPI
- 1427439363NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254648140
- NPI enumeration date
- June 16, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 492-9651
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kaci Alexander practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois
Dr. Alexander's primary practice is HSHS St. Elizabeth's Hospital, at 1 St Elizabeth Blvd, O'Fallon, IL 62269 in Saint Clair County. The practice phone is (217) 492-9651.
- HSHS St. Elizabeth's Hospital1 St Elizabeth Blvd, O'Fallon, IL 62269 · Saint Clair CountyPhone(217) 492-9651
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kaci Alexander is affiliated with 5 sites of care and 2 medical groups
Dr. Alexander's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dr. Alexander is also affiliated with HSHS St. Elizabeth's Hospital. The medical group on file is Vituity (formerly CEP America). Dmand AI also links Dr. Alexander to 3 more hospitals and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kaci Alexander's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Alexander practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HSHS St. Elizabeth's Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kaci Alexander is one of 5,652 internists in Illinois
Internal medicine is Dr. Alexander's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Alexander is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Alexander
Counts of internists 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. Kaci Alexander billed Medicare for 302 services in 2024
CMS data shows 302 Medicare services from Dr. Alexander across 2 procedure codes in 2024, for 193 Medicare patients. Medicare paid $31,820 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Alexander's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3482024: 30213%
Dr. Alexander compared with the Illinois median for internists, 2024
- Dr. Alexander
- Illinois median
- Medicare services
- 302vs 56647% below
- Medicare patients
- 193vs 2087% below
- Part D claims
- 14vs 28495% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Alexander'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. Alexander and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kaci Alexander treated 193 Medicare patients in 2024, average age 75
CMS counts 193 Medicare patients who saw Dr. Alexander in 2024. The largest group is 75 to 84, with 81 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 2.40, 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. Alexander's median patient age at 69, with 60% women.
Dr. Alexander's Medicare patients by age, 2024
Dr. Alexander's Medicare patients by sex, 2024
- Women10755%
- Men8645%
Chronic conditions among Dr. Alexander's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Heart failure58%
- Chronic kidney disease56%
- Ischemic heart disease53%
- Anxiety46%
- Mood disorders43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Alexander'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
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kaci Alexander wrote 14 Medicare Part D claims in 2019
In 2019, Dr. Alexander wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $118 in total drug cost. In 2018, CMS named 39 claims across 3 drugs.
Dr. Alexander's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 392019: 1464%
Drugs named by CMS: 1 in 2019, 3 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Kaci Alexander scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Alexander for performance year 2024, reported as part of a group. Dr. Alexander accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Alexander's MIPS scores, performance year 2024
- 100of 100Final score
- 96.6of 100Quality
- 40of 100Improvement Activities
- 82of 100Cost
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
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Dr. Kaci Alexander received $30 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Alexander from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $30.
Companies that paid Dr. Alexander the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Kaci Alexander'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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) |
| 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. Kaci Alexander
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. Kaci Alexander's NPI number?
Dr. Kaci Alexander's NPI number is 1427439363. It was assigned on June 16, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Kaci Alexander?
Dr. Kaci Alexander is an internist in O'Fallon, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kaci Alexander practice?
Dr. Alexander practices at 1 St Elizabeth Blvd, O'Fallon, IL 62269. Dr. Alexander's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dmand AI also links Dr. Alexander to 3 hospitals and 1 medical group.
What is Dr. Kaci Alexander's office phone number?
The practice phone on file for Dr. Alexander is (217) 492-9651.
What is Dr. Kaci Alexander's medical license number?
Dr. Alexander holds Missouri license 2015018533.
Which hospitals is Dr. Kaci Alexander affiliated with?
Dr. Alexander is affiliated with HSHS St. Elizabeth's Hospital. Dmand AI links Dr. Alexander to 3 more hospitals.
What medical group is Dr. Kaci Alexander part of?
Dr. Alexander is linked to Vituity (formerly CEP America). Dmand AI links Dr. Alexander to 1 more medical group.
Does Dr. Kaci Alexander accept Medicare?
Yes. CMS data shows Dr. Alexander billed Medicare for 302 services in 2024, and Dr. Alexander accepts Medicare assignment.
What is Dr. Kaci Alexander's MIPS score?
Dr. Alexander's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Kaci Alexander see?
CMS counts 193 Medicare patients who saw Dr. Alexander in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Kaci Alexander bill to Medicare?
In 2024, Dr. Alexander's most billed Medicare services were hospital inpatient care (99223) and care management and other visits (99497).
What drugs does Dr. Kaci Alexander prescribe most?
In 2019 Medicare Part D data, Dr. Alexander's most prescribed drugs by claims were Lisinopril.
Has Dr. Kaci Alexander received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Dr. Alexander from 1 company from 2016 to 2016. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Kaci Alexander been practicing?
Dr. Alexander graduated from medical school in 2015, 11 years ago.
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