CholesterolCholesterol, HDLCholesterol, LDL
Dr. John M. Willis, DO
NPI1205891207PAC ID9133210032
- Medicare services, 2024
- 787
- Medicare patients, 2024
- 219
- Part D claims, 2024
- 8,685
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 3400 W Wheatland Rd, Dallas, TX 75237
- Practice phone
- Call (214) 884-4700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Methodist Medical Group
Dallas, Texas
Find Dr. Willis' professional email, personal email and mobile number
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Dr. John M. Willis is an internist in Dallas, Texas
Dr. Willis practices at Methodist Medical Group in Dallas, Texas.
Dr. Willis' NPI, 1205891207, was assigned on April 20, 2006. Dr. Willis graduated from Texas College of Osteopathic Medicine in 1990. Dr. Willis holds Texas license J0366.
NPI and contact details
- NPI
- 1205891207NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133210032
- NPI enumeration date
- April 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (214) 884-4700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John M. Willis practices at Methodist Medical Group in Dallas, Texas
Dr. Willis' primary practice is Methodist Medical Group, at 3400 W Wheatland Rd, Dallas, TX 75237 in Dallas County. The practice phone is (214) 884-4700.
- Methodist Medical Group3400 W Wheatland Rd, Dallas, TX 75237 · Dallas CountyPhone(214) 884-4700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John M. Willis is affiliated with 3 sites of care and 1 medical group
Dr. Willis' primary practice is Methodist Medical Group in Dallas, Texas. Dr. Willis is also affiliated with Methodist Mansfield Medical Center. The medical group on file is Methodist Medical Group. Dmand AI also links Dr. Willis to 1 more group practice or clinic, named with a free account.
Methodist Medical GroupPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John M. Willis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Methodist Medical Group | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John M. Willis is one of 8,437 internists in Texas
Internal medicine is Dr. Willis' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Willis is board certified in internal medicine by the American Board of Internal Medicine. Dr. Willis is licensed in Texas.
Specialties and state licenses
- Internal medicine, TexasPrimary
Clinical focus
Dmand AI lists acute mini-stroke (TIA), acute sinusitis, acute skin infection, aneurysm, anxiety, bronchitis, chronic diabetes and chronic hypertension among the conditions Dr. Willis treats.
Internists near Dr. Willis
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. John M. Willis billed Medicare for 787 services in 2024
CMS data shows 787 Medicare services from Dr. Willis across 10 procedure codes in 2024, for 219 Medicare patients. Medicare paid $56,257 for them. Every service was in an office.
Medicare services, 2024787
Medicare patients219
Paid by Medicare$56,257
Procedure codes10
Dr. Willis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6572024: 6087%
- Other services
- 2023: 1262024: 10120%
- Tests and treatments
- 2023: 1102024: 7829%
- Lab and pathology
- 2023: 142024: 0100%
Dr. Willis compared with the Texas median for internists, 2024
- Dr. Willis
- Texas median
- Medicare services
- 787vs 53946% above
- Medicare patients
- 219vs 19015% above
- Part D claims
- 7,914vs 28927.4 times
Medians across 7,794 internists in Texas with Dmand AI profiles that report each measure.
Dr. Willis' 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. Willis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Willis and other internists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John M. Willis treated 219 Medicare patients in 2024, average age 75
CMS counts 219 Medicare patients who saw Dr. Willis in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high blood pressure, and 65% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Willis' median patient age at 68, with 47% women.
Medicare patients, 2024219
Average age75
Average risk score1.06
Also on Medicaid5%
Dr. Willis' Medicare patients by age, 2024
Dr. Willis' Medicare patients by sex, 2024
- Women11553%
- Men10447%
Chronic conditions among Dr. Willis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol65%
- Arthritis42%
- Diabetes30%
- Ischemic heart disease21%
- Atrial fibrillation17%
- Cancer17%
- Chronic kidney disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Willis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John M. Willis wrote 8,685 Medicare Part D claims in 2024
In 2024, Dr. Willis wrote 8,685 Medicare Part D claims for 535 patients. 88% of them were for generic drugs. CMS names the drug for 7,914 of them, across 142 drugs with 11 or more claims each, at $749,381 in total drug cost. In 2023, CMS named 8,123 claims across 143 drugs.
Part D claims, 20248,685
Drugs named by CMS142
Total drug cost$749,381
Part D patients535
Dr. Willis' Part D claims by kind of drug, 2024
- Generic7,616 claims88%
- Brand-name1,015 claims12%
- Other54 claims1%
Dr. Willis' 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. Willis' Part D claims, 2024
- Opioids1%107 of 8,685 claims
- Antibiotics2%212 of 8,685 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: 8,1232024: 7,9143%
Drugs named by CMS: 142 in 2024, 143 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. John M. Willis takes part in Medicare
Dr. Willis 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. John M. Willis has 1 publication on record
Dmand AI links 1 paper to Dr. Willis. Dr. Willis' most frequent co-authors are Michael B. Clearfield, DO, Keith Allan Vasenius, DO and Stephen E. Weis, DO.
Papers1
Dr. Willis' most frequent co-authors
- Michael B. Clearfield, DO1 shared paper
- Keith Allan Vasenius, DO1 shared paper
- Stephen E. Weis, DO1 shared paper
Recent publications by Dr. Willis
See who Dr. Willis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Willis works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John M. Willis received $6,613 in industry payments from 2016 to 2025
CMS Open Payments shows 397 general payments to Dr. Willis from 47 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Sanofi Pasteur Inc. paid the most, $1,024.
General payments to Dr. Willis by program year, 2016 to 2025
General payments to Dr. Willis by kind, 2016 to 2025
$6.6Kin total
- Food and beverage$5,66286%
- Gifts$92914%
- Education$230%
Companies that paid Dr. Willis 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. John M. Willis has 1 award and honors on record
Dmand AI lists 1 award for Dr. Willis, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Willis
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. John M. Willis graduated from Texas College of Osteopathic Medicine
Dr. Willis graduated from Texas College of Osteopathic Medicine in 1990. Dr. Willis is a member of ACOI, American Osteopathic Academy of Addiction Medicine, AOA and American Society of Addiction Medicine.
- Medical school
- Board certified in internal medicine
- Board certified in addiction medicine (caq)
- Board certified in internal medicine
- Board certified in 1984 - 2026
Source: Dmand AI Professional Profile Data
Dr. John M. Willis accepts plans from 21 insurance carriers
Dr. Willis is in network with 21 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Humana
- Alliant Health Plans
- Aspirus Health Plan
- +13 more carriersWith a free account
Plan types Dr. Willis accepts, by number of carriers
- PPO13
- HMO11
- Medicare8
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. John M. Willis'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 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John M. Willis
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. John M. Willis' NPI number?
Dr. John M. Willis' NPI number is 1205891207. It was assigned on April 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John M. Willis?
Dr. John M. Willis is an internist in Dallas, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John M. Willis practice?
Dr. Willis practices at 3400 W Wheatland Rd, Dallas, TX 75237. Dr. Willis' primary practice is Methodist Medical Group in Dallas, Texas. Dmand AI also links Dr. Willis to 1 group practice or clinic.
What is Dr. John M. Willis' office phone number?
The practice phone on file for Dr. Willis is (214) 884-4700.
What is Dr. John M. Willis' medical license number?
Dr. Willis holds Texas license J0366.
Which hospitals is Dr. John M. Willis affiliated with?
Dr. Willis is affiliated with Methodist Mansfield Medical Center.
What medical group is Dr. John M. Willis part of?
Dr. Willis is linked to Methodist Medical Group.
Does Dr. John M. Willis accept Medicare?
Yes. CMS data shows Dr. Willis billed Medicare for 787 services in 2024, and Dr. Willis accepts Medicare assignment.
How many Medicare patients does Dr. John M. Willis see?
CMS counts 219 Medicare patients who saw Dr. Willis in 2024, with an average age of 75.
Is Dr. John M. Willis board certified?
Yes. Dr. Willis is board certified in internal medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. John M. Willis bill to Medicare?
In 2024, Dr. Willis' most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0008).
Where did Dr. John M. Willis go to medical school?
Dr. Willis graduated from Texas College of Osteopathic Medicine in 1990.
What drugs does Dr. John M. Willis prescribe most?
In 2024 Medicare Part D data, Dr. Willis' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. John M. Willis received payments from drug or device companies?
CMS Open Payments shows $6,613 in general payments to Dr. Willis from 47 companies from 2016 to 2025. The largest total came from Sanofi Pasteur Inc.
How long has Dr. John M. Willis been practicing?
Dr. Willis graduated from medical school in 1990, 36 years ago.
Does Dr. John M. Willis do research?
Dmand AI links 1 publication to Dr. Willis.
Who does Dr. John M. Willis publish with?
Dr. Willis' most frequent co-authors are Michael B. Clearfield, DO (1 shared paper), Keith Allan Vasenius, DO (1 shared paper) and Stephen E. Weis, DO (1 shared paper).
What insurance does Dr. John M. Willis accept?
Dr. Willis is in network with 21 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
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