Dr. William Francis Barker, DO
- Medicare services, 2024
- 644
- Medicare patients, 2024
- 334
- Part D claims, 2024
- 163
- MIPS score, 2024
- 86
- Hospital affiliations
- 2
- Practice address
- 3801 South National Avenue, Springfield, MO 65807
- Practice phone
- Call (417) 269-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Barker's professional email, personal email and mobile number
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Dr. William Francis Barker is an internist in Springfield, Missouri
Dr. Barker practices at Cox Medical Center South in Springfield, Missouri, part of Lester E. Cox Medical Centers.
Dr. Barker's NPI, 1245868157, was assigned on March 28, 2020. Dr. Barker holds Missouri license 2023013570.
- NPI
- 1245868157NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143682526
- NPI enumeration date
- March 28, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (417) 269-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Francis Barker practices at Cox Medical Center South in Springfield, Missouri
Dr. Barker's primary practice is Cox Medical Center South, at 3801 South National Avenue, Springfield, MO 65807 in Greene County. The practice phone is (417) 269-6000.
- Cox Medical Center South3801 South National Avenue, Springfield, MO 65807 · Greene CountyPhone(417) 269-6000
Source: Dmand AI Affiliation Data
Dr. William Francis Barker is affiliated with 2 sites of care and 1 medical group
Dr. Barker's primary practice is Cox Medical Center South in Springfield, Missouri, part of Lester E. Cox Medical Centers. Dr. Barker is also affiliated with Citizens Memorial Hospital. The medical group on file is CoxHealth Primrose OBGYN.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Francis Barker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cox Medical Center South | 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. William Francis Barker is one of 2,114 internists in Missouri
Internal medicine is Dr. Barker's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Barker is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Barker
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. William Francis Barker billed Medicare for 644 services in 2024
CMS data shows 644 Medicare services from Dr. Barker across 5 procedure codes in 2024, for 334 Medicare patients. Medicare paid $48,227 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Barker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1502024: 644329%
Dr. Barker compared with the Missouri median for internists, 2024
- Dr. Barker
- Missouri median
- Medicare services
- 644vs 53022% above
- Medicare patients
- 334vs 21158% above
- Part D claims
- 53vs 32584% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Barker'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Francis Barker treated 334 Medicare patients in 2024, average age 76
CMS counts 334 Medicare patients who saw Dr. Barker in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.33, 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. Barker's median patient age at 76, with 50% women.
Dr. Barker's Medicare patients by age, 2024
Dr. Barker's Medicare patients by sex, 2024
- Women19859%
- Men13641%
Chronic conditions among Dr. Barker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Mood disorders50%
- Chronic kidney disease48%
- Depression48%
- Anxiety46%
- Diabetes43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Francis Barker wrote 163 Medicare Part D claims in 2024
In 2024, Dr. Barker wrote 163 Medicare Part D claims for 74 patients. 87% of them were for generic drugs. CMS names the drug for 53 of them, across 4 drugs with 11 or more claims each, at $601 in total drug cost.
Dr. Barker's Part D claims by kind of drug, 2024
- Generic141 claims87%
- Brand-name and other22 claims13%
Dr. Barker'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. Barker's Part D claims, 2024
- Antibiotics27%44 of 163 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. William Francis Barker scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Barker for performance year 2024, reported as part of a group. Dr. Barker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Barker's MIPS scores, performance year 2024
- 86of 100Final score
- 74.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 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. William Francis Barker received $129 in industry payments in 2023
CMS Open Payments shows 2 general payments to Dr. Barker from 2 drug and device companies in 2023. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $108.
Companies that paid Dr. Barker the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William Francis Barker'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) |
| 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. William Francis Barker
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. William Francis Barker's NPI number?
Dr. William Francis Barker's NPI number is 1245868157. It was assigned on March 28, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. William Francis Barker?
Dr. William Francis Barker is an internist in Springfield, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William Francis Barker practice?
Dr. Barker practices at 3801 South National Avenue, Springfield, MO 65807. Dr. Barker's primary practice is Cox Medical Center South in Springfield, Missouri, part of Lester E. Cox Medical Centers.
What is Dr. William Francis Barker's office phone number?
The practice phone on file for Dr. Barker is (417) 269-6000.
What is Dr. William Francis Barker's medical license number?
Dr. Barker holds Missouri license 2023013570.
Which hospitals is Dr. William Francis Barker affiliated with?
Dr. Barker practices at Cox Medical Center South in Springfield, Missouri. Dr. Barker is also affiliated with Citizens Memorial Hospital.
What medical group is Dr. William Francis Barker part of?
Dr. Barker is linked to CoxHealth Primrose OBGYN.
Does Dr. William Francis Barker accept Medicare?
Yes. CMS data shows Dr. Barker billed Medicare for 644 services in 2024, and Dr. Barker accepts Medicare assignment.
What is Dr. William Francis Barker's MIPS score?
Dr. Barker's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
How many Medicare patients does Dr. William Francis Barker see?
CMS counts 334 Medicare patients who saw Dr. Barker in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. William Francis Barker bill to Medicare?
In 2024, Dr. Barker's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99223).
What drugs does Dr. William Francis Barker prescribe most?
In 2024 Medicare Part D data, Dr. Barker's most prescribed drugs by claims were Nifedipine ER, Prednisone and Lisinopril.
Has Dr. William Francis Barker received payments from drug or device companies?
CMS Open Payments shows $129 in general payments to Dr. Barker from 2 companies from 2023 to 2023. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. William Francis Barker been practicing?
Dr. Barker graduated from medical school in 2020, 6 years ago.
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