Dr. Rex B. Keith, MD
- Medicare services, 2024
- 114
- Medicare patients, 2024
- 93
- Part D claims, 2024
- 340
- Hospital affiliations
- 1
- Industry payments
- $54
- Practice address
- 929 North St Francis Street, Wichita, KS 67214
- Practice phone
- Call (316) 268-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Keith's professional email, personal email and mobile number
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Dr. Rex B. Keith is a family medicine physician in Wichita, Kansas
Dr. Keith practices at Ascension Via Christi St. Francis in Wichita, Kansas, part of Ascension Health Alliance.
Dr. Keith's NPI, 1538164603, was assigned on June 16, 2005. Dr. Keith graduated from University of Kansas School of Med (KC/Wich/Sal) in 1985. Dr. Keith holds Kansas license 0421457.
- NPI
- 1538164603NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274579636
- NPI enumeration date
- June 16, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (316) 268-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex B. Keith practices at Ascension Via Christi St. Francis in Wichita, Kansas
Dr. Keith's primary practice is Ascension Via Christi St. Francis, at 929 North St Francis Street, Wichita, KS 67214 in Sedgwick County. The practice phone is (316) 268-5000.
- Ascension Via Christi St. Francis929 North St Francis Street, Wichita, KS 67214 · Sedgwick CountyPhone(316) 268-5000
Source: Dmand AI Affiliation Data
Dr. Rex B. Keith is affiliated with 2 sites of care and 1 medical group
Dr. Keith's primary practice is Ascension Via Christi St. Francis in Wichita, Kansas, part of Ascension Health Alliance. The medical group on file is Ascension Medical Group Via Christi. Dmand AI also links Dr. Keith to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rex B. Keith's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keith practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Via Christi St. Francis | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rex B. Keith is one of 1,542 family medicine physicians in Kansas
Family medicine is Dr. Keith's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Keith is licensed in Kansas.
Specialties and state licenses
- Family medicine, KansasPrimary
Family medicine physicians near Dr. Keith
Counts of family medicine physicians 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. Rex B. Keith billed Medicare for 114 services in 2024
CMS data shows 114 Medicare services from Dr. Keith across 4 procedure codes in 2024, for 93 Medicare patients. Medicare paid $7,166 for them.
Dr. Keith's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1192024: 1144%
Where Dr. Keith's Medicare services took place, 2024
- In an office5346%
- In a facility6154%
Dr. Keith compared with the Kansas median for family medicine physicians, 2024
- Dr. Keith
- Kansas median
- Medicare services
- 114vs 40372% below
- Medicare patients
- 93vs 16443% below
- Part D claims
- 188vs 1,31886% below
Medians across 1,605 family medicine physicians in Kansas with Dmand AI profiles that report each measure.
Dr. Keith'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. Keith and other family medicine physicians in Kansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rex B. Keith treated 93 Medicare patients in 2024, average age 66
CMS counts 93 Medicare patients who saw Dr. Keith in 2024. The largest group is 65 to 74, with 38 patients. 75% of them have high blood pressure, and 56% have high cholesterol. 46% are also on Medicaid. Their average risk score is 1.55, 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. Keith's median patient age at 64, with 60% women.
Dr. Keith's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Keith's Medicare patients by sex, 2024
- Women5458%
- Men3942%
Chronic conditions among Dr. Keith's Medicare patients, 2024
- High blood pressure75%
- High cholesterol56%
- Mood disorders45%
- Diabetes42%
- Arthritis38%
- Ischemic heart disease37%
- Depression34%
- Tobacco use34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Keith's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
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. Rex B. Keith wrote 340 Medicare Part D claims in 2024
In 2024, Dr. Keith wrote 340 Medicare Part D claims for 19 patients. 87% of them were for generic drugs. CMS names the drug for 188 of them, across 13 drugs with 11 or more claims each, at $18,847 in total drug cost. In 2023, CMS named 85 claims across 6 drugs.
Dr. Keith's Part D claims by kind of drug, 2024
- Generic297 claims87%
- Brand-name and other43 claims13%
Dr. Keith'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. Keith's Part D claims, 2024
- Opioids9%32 of 340 claims
- Antipsychotics, patients 65 and over3%11 of 340 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: 852024: 188121%
Drugs named by CMS: 13 in 2024, 6 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
How Dr. Rex B. Keith takes part in Medicare
Dr. Keith accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Rex B. Keith received $54 in industry payments in 2018
CMS Open Payments shows 3 general payments to Dr. Keith from 3 drug and device companies in 2018. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $28.
Companies that paid Dr. Keith the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rex B. Keith graduated from University of Kansas School of Med (KC/Wich/Sal)
Dr. Keith graduated from University of Kansas School of Med (KC/Wich/Sal) in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rex B. Keith'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) |
| 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. Rex B. Keith
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. Rex B. Keith's NPI number?
Dr. Rex B. Keith's NPI number is 1538164603. It was assigned on June 16, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex B. Keith?
Dr. Rex B. Keith is a family medicine physician in Wichita, Kansas. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Rex B. Keith practice?
Dr. Keith practices at 929 North St Francis Street, Wichita, KS 67214. Dr. Keith's primary practice is Ascension Via Christi St. Francis in Wichita, Kansas, part of Ascension Health Alliance. Dmand AI also links Dr. Keith to 1 group practice or clinic.
What is Dr. Rex B. Keith's office phone number?
The practice phone on file for Dr. Keith is (316) 268-5000.
What is Dr. Rex B. Keith's medical license number?
Dr. Keith holds Kansas license 0421457.
Which hospitals is Dr. Rex B. Keith affiliated with?
Dr. Keith practices at Ascension Via Christi St. Francis in Wichita, Kansas.
What medical group is Dr. Rex B. Keith part of?
Dr. Keith is linked to Ascension Medical Group Via Christi.
Does Dr. Rex B. Keith accept Medicare?
Yes. CMS data shows Dr. Keith billed Medicare for 114 services in 2024, and Dr. Keith accepts Medicare assignment.
How many Medicare patients does Dr. Rex B. Keith see?
CMS counts 93 Medicare patients who saw Dr. Keith in 2024, with an average age of 66.
What services does Dr. Rex B. Keith bill to Medicare?
In 2024, Dr. Keith's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and office visit, established patient (99213).
Show 4 more questionsShow fewer questions
Where did Dr. Rex B. Keith go to medical school?
Dr. Keith graduated from University of Kansas School of Med (KC/Wich/Sal) in 1985.
What drugs does Dr. Rex B. Keith prescribe most?
In 2024 Medicare Part D data, Dr. Keith's most prescribed drugs by claims were Duloxetine HCl, Montelukast Sodium and Hydrocodone-Acetaminophen.
Has Dr. Rex B. Keith received payments from drug or device companies?
CMS Open Payments shows $54 in general payments to Dr. Keith from 3 companies from 2018 to 2018. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Rex B. Keith been practicing?
Dr. Keith graduated from medical school in 1985, 41 years ago.
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