Dr. David Charles Willis, MD
- Medicare services, 2017
- 169
- Part D claims, 2024
- 2,303
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $1,938
- Practice address
- 1500 SW 1st Ave, Ocala, FL 34474
- Practice phone
- Call (352) 351-7200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Willis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David Charles Willis is a family medicine physician in Ocala, Florida
Dr. Willis practices at AdventHealth Ocala in Ocala, Florida, part of AdventHealth.
Dr. Willis' NPI, 1235261371, was assigned on March 12, 2007. Dr. Willis graduated from USF Health Morsani College of Medicine in 1997. Dr. Willis holds Florida license ME76627.
- NPI
- 1235261371NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729093091
- NPI enumeration date
- March 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (352) 351-7200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Charles Willis practices at AdventHealth Ocala in Ocala, Florida
Dr. Willis' primary practice is AdventHealth Ocala, at 1500 SW 1st Ave, Ocala, FL 34474 in Marion County. The practice phone is (352) 351-7200.
- AdventHealth Ocala1500 SW 1st Ave, Ocala, FL 34474 · Marion CountyPhone(352) 351-7200
Source: Dmand AI Affiliation Data
Dr. David Charles Willis is affiliated with 3 sites of care and 1 medical group
Dr. Willis' primary practice is AdventHealth Ocala in Ocala, Florida, part of AdventHealth. The medical group on file is CORA Physical Therapy, Spanish Springs. Dmand AI also links Dr. Willis to 1 more physician office and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Charles Willis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| AdventHealth Ocala | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across AdventHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David Charles Willis is one of 7,735 family medicine physicians in Florida
Family medicine is Dr. Willis' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Willis is board certified in family medicine by the American Board of Family Medicine. Dr. Willis is licensed in Florida.
Specialties and state licenses
- Family medicine, FloridaPrimary
Family medicine physicians near Dr. Willis
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. David Charles Willis billed Medicare for 169 services in 2017
CMS data shows 169 Medicare services from Dr. Willis across 4 procedure codes in 2017. Medicare paid $1,711 for them. Every service was in an office.
Dr. Willis' Medicare services by type, 2016 to 2017
- 2016
- 2017
- Tests and treatments
- 2016: 682017: 8626%
- Lab and pathology
- 2016: 932017: 8311%
- Other services
- 2016: 172017: 0100%
Dr. Willis compared with the Florida median for family medicine physicians, 2017
- Dr. Willis
- Florida median
- Medicare services
- 169vs 39357% below
- Part D claims
- 1,713vs 97975% above
Medians across 7,484 family medicine physicians in Florida with Dmand AI profiles that report each measure.
Dr. Willis' most billed Medicare procedure codes, 2017
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 family medicine physicians in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Charles Willis' patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Willis' median patient age at 65, with 46% women.
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 65
Patient panel by sex, all payers
- Women46%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. David Charles Willis wrote 2,303 Medicare Part D claims in 2024
In 2024, Dr. Willis wrote 2,303 Medicare Part D claims for 160 patients. 86% of them were for generic drugs. CMS names the drug for 1,713 of them, across 62 drugs with 11 or more claims each, at $122,583 in total drug cost. In 2023, CMS named 1,501 claims across 57 drugs.
Dr. Willis' Part D claims by kind of drug, 2024
- Generic1,974 claims86%
- Brand-name314 claims14%
- Other15 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
- Opioids4%81 of 2,303 claims
- Antibiotics7%168 of 2,303 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: 1,5012024: 1,71314%
Drugs named by CMS: 62 in 2024, 57 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. David Charles 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. David Charles Willis has 1 publication on record
Dmand AI links 1 paper to Dr. Willis in 2024.
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 family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Charles Willis received $1,938 in industry payments from 2016 to 2025
CMS Open Payments shows 116 general payments to Dr. Willis from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. GlaxoSmithKline, LLC. paid the most, $342.
General payments to Dr. Willis by program year, 2016 to 2025
General payments to Dr. Willis by kind, 2016 to 2025
- Food and beverage$1,90798%
- Education$312%
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. David Charles Willis has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Willis, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Willis
- 2013
- CMS Stage 1 EHR
- 2012
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. David Charles Willis graduated from USF Health Morsani College of Medicine
Dr. Willis graduated from USF Health Morsani College of Medicine in 1997. Dr. Willis is a member of AAFP and FMA.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. David Charles 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 | 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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. David Charles 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. David Charles Willis' NPI number?
Dr. David Charles Willis' NPI number is 1235261371. It was assigned on March 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. David Charles Willis?
Dr. David Charles Willis is a family medicine physician in Ocala, Florida. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. David Charles Willis practice?
Dr. Willis practices at 1500 SW 1st Ave, Ocala, FL 34474. Dr. Willis' primary practice is AdventHealth Ocala in Ocala, Florida, part of AdventHealth. Dmand AI also links Dr. Willis to 1 physician office and 1 group practice or clinic.
What is Dr. David Charles Willis' office phone number?
The practice phone on file for Dr. Willis is (352) 351-7200.
What is Dr. David Charles Willis' medical license number?
Dr. Willis holds Florida license ME76627.
Which hospitals is Dr. David Charles Willis affiliated with?
Dr. Willis practices at AdventHealth Ocala in Ocala, Florida.
What medical group is Dr. David Charles Willis part of?
Dr. Willis is linked to CORA Physical Therapy, Spanish Springs.
Does Dr. David Charles Willis accept Medicare?
Yes. CMS data shows Dr. Willis billed Medicare for 169 services in 2017, and Dr. Willis accepts Medicare assignment.
Is Dr. David Charles Willis board certified?
Yes. Dr. Willis is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. David Charles Willis bill to Medicare?
In 2017, Dr. Willis' most billed Medicare services were vaccine or vaccine administration (90656), lab and pathology test (85610) and lab and pathology test (81003).
Show 5 more questionsShow fewer questions
Where did Dr. David Charles Willis go to medical school?
Dr. Willis graduated from USF Health Morsani College of Medicine in 1997.
What drugs does Dr. David Charles Willis prescribe most?
In 2024 Medicare Part D data, Dr. Willis' most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Levothyroxine Sodium.
Has Dr. David Charles Willis received payments from drug or device companies?
CMS Open Payments shows $1,938 in general payments to Dr. Willis from 22 companies from 2016 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. David Charles Willis been practicing?
Dr. Willis graduated from medical school in 1997, 29 years ago.
Does Dr. David Charles Willis do research?
Dmand AI links 1 publication to Dr. Willis.
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