Physician Profile
Unclaimed ProfileAbout WILLIS
John M Willis, DO practises internal medicine in Mansfield, TX. John is a 1990 graduate of University of North Texas Hsc, College of Osteopathic Med.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Willis?
Dr. Willis is an internal medicine in Mansfield, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Willis's address?
Dr. Willis is listed at 252 MATLOCK RD STE 130, Mansfield, TX 76063. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Willis?
The number on file is (682) 242-8990. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Willis?
Dr. Willis's National Provider Identifier is 1205891207. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Willis train?
Dr. Willis attended University of North Texas Hsc, College of Osteopathic Med, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Willis have?
Dr. Willis has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Willis perform?
According to Medicare billing data, Dr. Willis provides treatments such as influenza vaccine split virus, preservative free and pneumococcal conjugate vaccine, 20 valent , for intramuscular use, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Willis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Willis. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (682) 242-8990
- Email not available
Practice Locations
252 MATLOCK RD STE 130
Mansfield, TX 76063
Procedures Most Often Billed to Medicare
787 services · 503 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
48 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
18 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
322 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
267 |
| Administration of influenza virus vaccine | Billing code | G0008 |
52 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
19 |
| Advance care planning, first 30 minutes | Office visit | 99497 |
19 |
| Administration of pneumococcal vaccine | Billing code | G0009 |
17 |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | Billing code | G0180 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other internal medicines in Mansfield 6
Same specialty, same city.
Trained at University of North Texas Hsc, College of Osteopathic Med 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at University of North Texas Hsc, College of Osteopathic Med 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine split virus, preservative free 8
Providers in TX who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.