Dr. William Clark Decker, DO
- Medicare services, 2024
- 1,696
- Medicare patients, 2024
- 516
- Part D claims, 2024
- 5,870
- Hospital affiliations
- 3
- Industry payments
- $12,182
- Practice address
- 5200 Harroun Rd, Sylvania, OH 43560
- Practice phone
- Call (419) 824-1444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ProMedica Flower Hospital
Sylvania, Ohio
Find Dr. Decker's 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. William Clark Decker is a pulmonologist in Sylvania, Ohio
Dr. Decker practices at ProMedica Flower Hospital in Sylvania, Ohio.
Dr. Decker's NPI, 1942205208, was assigned on June 14, 2005. Dr. Decker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1985. Dr. Decker holds Michigan license 5101009355.
- NPI
- 1942205208NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315990280
- NPI enumeration date
- June 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 824-1444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Clark Decker practices at ProMedica Flower Hospital in Sylvania, Ohio
Dr. Decker's primary practice is ProMedica Flower Hospital, at 5200 Harroun Rd, Sylvania, OH 43560 in Lucas County. The practice phone is (419) 824-1444.
- ProMedica Flower Hospital5200 Harroun Rd, Sylvania, OH 43560 · Lucas CountyPhone(419) 824-1444
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Clark Decker is affiliated with 6 sites of care and 1 medical group
Dr. Decker's primary practice is ProMedica Flower Hospital in Sylvania, Ohio. Dr. Decker is also affiliated with ProMedica Toledo Hospital. The medical group on file is ProMedica. Dmand AI also links Dr. Decker to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William Clark Decker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Decker practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ProMedica Flower Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Clark Decker is one of 611 pulmonologists in Ohio
Pulmonary disease is Dr. Decker's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dmand AI has Dr. Decker's licenses on file in 2 states: Michigan and Ohio.
Specialties and state licenses
- Pulmonary disease, MichiganPrimary
- Ohio license
Pulmonologists near Dr. Decker
Counts of pulmonologists 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 Clark Decker billed Medicare for 1,696 services in 2024
CMS data shows 1,696 Medicare services from Dr. Decker across 12 procedure codes in 2024, for 516 Medicare patients. Medicare paid $131,180 for them.
Dr. Decker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2342024: 1,2562%
- Tests and treatments
- 2023: 4162024: 415No change
- Surgery
- 2023: 132024: 2592%
Where Dr. Decker's Medicare services took place, 2024
- In an office1,10865%
- In a facility58835%
Dr. Decker compared with the Ohio median for pulmonologists, 2024
- Dr. Decker
- Ohio median
- Medicare services
- 1,696vs 5593.0 times
- Medicare patients
- 516vs 2442.1 times
- Part D claims
- 5,500vs 6168.9 times
Medians across 606 pulmonologists in Ohio with Dmand AI profiles that report each measure.
Dr. Decker'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.
Need commercial claims for Dr. Decker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Decker and other pulmonologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Clark Decker treated 516 Medicare patients in 2024, average age 73
CMS counts 516 Medicare patients who saw Dr. Decker in 2024. The largest group is 65 to 74, with 217 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.84, 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. Decker's median patient age at 71, with 54% women.
Dr. Decker's Medicare patients by age, 2024
Dr. Decker's Medicare patients by sex, 2024
- Women28054%
- Men23646%
Chronic conditions among Dr. Decker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- COPD58%
- Arthritis50%
- Heart failure39%
- Diabetes37%
- Ischemic heart disease34%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Decker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Clark Decker wrote 5,870 Medicare Part D claims in 2024
In 2024, Dr. Decker wrote 5,870 Medicare Part D claims for 727 patients. 56% of them were for generic drugs. CMS names the drug for 5,500 of them, across 79 drugs with 11 or more claims each, at $1,760,959 in total drug cost. In 2023, CMS named 4,984 claims across 69 drugs.
Dr. Decker's Part D claims by kind of drug, 2024
- Generic3,315 claims56%
- Brand-name2,538 claims43%
- Other17 claims0%
Dr. Decker'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. Decker's Part D claims, 2024
- Opioids2%139 of 5,870 claims
- Antibiotics8%457 of 5,870 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: 4,9842024: 5,50010%
Drugs named by CMS: 79 in 2024, 69 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 Clark Decker takes part in Medicare
Dr. Decker 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 Clark Decker received $12,182 in industry payments from 2016 to 2025
CMS Open Payments shows 713 general payments to Dr. Decker from 47 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,481.
General payments to Dr. Decker by program year, 2016 to 2025
General payments to Dr. Decker by kind, 2016 to 2025
- Food and beverage$11,90998%
- Education$2732%
Companies that paid Dr. Decker 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 Clark Decker graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Decker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Clark Decker'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) |
| 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 Clark Decker
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 Clark Decker's NPI number?
Dr. William Clark Decker's NPI number is 1942205208. It was assigned on June 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Clark Decker?
Dr. William Clark Decker is a pulmonologist in Sylvania, Ohio. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. William Clark Decker practice?
Dr. Decker practices at 5200 Harroun Rd, Sylvania, OH 43560. Dr. Decker's primary practice is ProMedica Flower Hospital in Sylvania, Ohio. Dmand AI also links Dr. Decker to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. William Clark Decker's office phone number?
The practice phone on file for Dr. Decker is (419) 824-1444.
What is Dr. William Clark Decker's medical license number?
Dr. Decker holds Michigan license 5101009355, one of the licenses on file in 2 states.
Which states has Dr. William Clark Decker been licensed in?
Dmand AI has state licenses on file for Dr. Decker in Michigan and Ohio.
Which hospitals is Dr. William Clark Decker affiliated with?
Dr. Decker is affiliated with ProMedica Toledo Hospital. Dmand AI links Dr. Decker to 2 more hospitals.
What medical group is Dr. William Clark Decker part of?
Dr. Decker is linked to ProMedica.
Does Dr. William Clark Decker accept Medicare?
Yes. CMS data shows Dr. Decker billed Medicare for 1,696 services in 2024, and Dr. Decker accepts Medicare assignment.
How many Medicare patients does Dr. William Clark Decker see?
CMS counts 516 Medicare patients who saw Dr. Decker in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. William Clark Decker bill to Medicare?
In 2024, Dr. Decker's most billed Medicare services were office visit, established patient (99214), lung function service (94060) and hospital inpatient care (99232).
Where did Dr. William Clark Decker go to medical school?
Dr. Decker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1985.
What drugs does Dr. William Clark Decker prescribe most?
In 2024 Medicare Part D data, Dr. Decker's most prescribed drugs by claims were Trelegy Ellipta, Albuterol Sulfate Hfa and Prednisone.
Has Dr. William Clark Decker received payments from drug or device companies?
CMS Open Payments shows $12,182 in general payments to Dr. Decker from 47 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. William Clark Decker been practicing?
Dr. Decker graduated from medical school in 1985, 41 years ago.
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