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Dr. William Lewis McKay, DO
NPI1265417331PAC ID7315985447
- Part D claims, 2024
- 6,442
- Publications
- 1
- Hospital affiliations
- 3
- Industry payments
- $4,330
- Medical group
- 1
- Practice address
- 327 East Airport Drive, Carthage, MO 64836
- Practice phone
- Call (417) 237-0604
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OCH Jasper County Clinic
Rural Health Clinic - Hospital-Owned · Carthage, Missouri
Find Dr. McKay's professional email, personal email and mobile number
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Dr. William Lewis McKay is a family medicine physician in Carthage, Missouri
Dr. McKay practices at OCH Jasper County Clinic in Carthage, Missouri.
Dr. McKay's NPI, 1265417331, was assigned on December 13, 2005. Dr. McKay graduated from Oklahoma State University College of Osteopathic Medicine in 1983. Dr. McKay holds Missouri license R5G53.
NPI and contact details
- NPI
- 1265417331NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315985447
- NPI enumeration date
- December 13, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (417) 237-0604
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Lewis McKay practices at OCH Jasper County Clinic in Carthage, Missouri
Dr. McKay's primary practice is OCH Jasper County Clinic, at 327 East Airport Drive, Carthage, MO 64836. The practice phone is (417) 237-0604.
- OCH Jasper County Clinic327 East Airport Drive, Carthage, MO 64836Phone(417) 237-0604
Source: Dmand AI Affiliation Data
Dr. William Lewis McKay is affiliated with 7 sites of care and 1 medical group
Dr. McKay's primary practice is OCH Jasper County Clinic in Carthage, Missouri. Dr. McKay is also affiliated with Cox Medical Center South. The medical group on file is OCH Evergreen Clinic. Dmand AI also links Dr. McKay to 2 more hospitals, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility, each named with a free account. Dr. McKay's employer is on file too: a rural health clinic (rhc).
OCH Jasper County ClinicPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Lewis McKay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McKay practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OCH Jasper County Clinic | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Lewis McKay is one of 2,412 family medicine physicians in Missouri
Family medicine is Dr. McKay's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. McKay is licensed in Missouri.
Specialties and state licenses
- Family medicine, MissouriPrimary
Family medicine physicians near Dr. McKay
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
2,412family medicine physicians in Missouri
5family medicine physicians in Carthage
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Lewis McKay's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. McKay's median patient age at 65, with 54% women.
Dr. McKay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women54%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. William Lewis McKay wrote 6,442 Medicare Part D claims in 2024
In 2024, Dr. McKay wrote 6,442 Medicare Part D claims for 286 patients. 89% of them were for generic drugs. CMS names the drug for 5,822 of them, across 115 drugs with 11 or more claims each, at $242,075 in total drug cost. In 2023, CMS named 6,797 claims across 142 drugs.
Part D claims, 20246,442
Drugs named by CMS115
Total drug cost$242,075
Part D patients286
Dr. McKay's Part D claims by kind of drug, 2024
- Generic5,755 claims89%
- Brand-name608 claims9%
- Other79 claims1%
Dr. McKay'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. McKay's Part D claims, 2024
- Opioids11%729 of 6,442 claims
- Antibiotics1%59 of 6,442 claims
- Antipsychotics, patients 65 and over1%69 of 6,442 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: 6,7972024: 5,82214%
Drugs named by CMS: 115 in 2024, 142 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. William Lewis McKay takes part in Medicare
Dr. McKay 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. William Lewis McKay has 1 publication on record
Dmand AI links 1 paper to Dr. McKay in 2021. Dr. McKay's most frequent co-authors are Andrew P. Carlson, MD and Howard Yonas, MD.
Papers1
Dr. McKay's most frequent co-authors
Recent publications by Dr. McKay
See who Dr. McKay researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. McKay works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Lewis McKay received $4,330 in industry payments from 2016 to 2025
CMS Open Payments shows 263 general payments to Dr. McKay from 34 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, $571.
General payments to Dr. McKay by program year, 2016 to 2025
General payments to Dr. McKay by kind, 2016 to 2025
$4.3Kin total
- Food and beverage$4,316100%
- Education$140%
Companies that paid Dr. McKay 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. William Lewis McKay graduated from Oklahoma State University College of Osteopathic Medicine
Dr. McKay graduated from Oklahoma State University College of Osteopathic Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Lewis McKay'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. William Lewis McKay
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 Lewis McKay's NPI number?
Dr. William Lewis McKay's NPI number is 1265417331. It was assigned on December 13, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Lewis McKay?
Dr. William Lewis McKay is a family medicine physician in Carthage, Missouri. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Lewis McKay practice?
Dr. McKay practices at 327 East Airport Drive, Carthage, MO 64836. Dr. McKay's primary practice is OCH Jasper County Clinic in Carthage, Missouri. Dmand AI also links Dr. McKay to 2 hospitals, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility.
What is Dr. William Lewis McKay's office phone number?
The practice phone on file for Dr. McKay is (417) 237-0604.
What is Dr. William Lewis McKay's medical license number?
Dr. McKay holds Missouri license R5G53.
Which hospitals is Dr. William Lewis McKay affiliated with?
Dr. McKay is affiliated with Cox Medical Center South. Dmand AI links Dr. McKay to 2 more hospitals.
What medical group is Dr. William Lewis McKay part of?
Dr. McKay is linked to OCH Evergreen Clinic.
Does Dr. William Lewis McKay accept Medicare?
Yes. CMS lists Dr. McKay as accepting Medicare assignment.
Where did Dr. William Lewis McKay go to medical school?
Dr. McKay graduated from Oklahoma State University College of Osteopathic Medicine in 1983.
What drugs does Dr. William Lewis McKay prescribe most?
In 2024 Medicare Part D data, Dr. McKay's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Levothyroxine Sodium and Atorvastatin Calcium.
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Has Dr. William Lewis McKay received payments from drug or device companies?
CMS Open Payments shows $4,330 in general payments to Dr. McKay from 34 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. William Lewis McKay been practicing?
Dr. McKay graduated from medical school in 1983, 43 years ago.
Does Dr. William Lewis McKay do research?
Dmand AI links 1 publication to Dr. McKay.
Who does Dr. William Lewis McKay publish with?
Dr. McKay's most frequent co-authors are Andrew P. Carlson, MD (1 shared paper) and Howard Yonas, MD (1 shared paper).
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