Dr. William Henry Wismer, DO
- Medicare services, 2024
- 305
- Medicare patients, 2024
- 185
- Part D claims, 2024
- 802
- MIPS score, 2024
- 94
- Hospital affiliations
- 4
- Practice address
- 2 Crescent Park West, Warren, PA 16365
- Practice phone
- Call (814) 723-4973
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Wismer's professional email, personal email and mobile number
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Dr. William Henry Wismer is a gastroenterologist in Warren, Pennsylvania
Dr. Wismer practices at Warren General Hospital in Warren, Pennsylvania, part of Warren General Hospital.
Dr. Wismer's NPI, 1346292406, was assigned on May 17, 2006. Dr. Wismer graduated from Lake Erie College of Osteopathic Medicine, Erie in 2000. Dr. Wismer holds Pennsylvania license OS-011918.
- NPI
- 1346292406NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062403041
- NPI enumeration date
- May 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (814) 723-4973
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Henry Wismer practices at Warren General Hospital in Warren, Pennsylvania
Dr. Wismer's primary practice is Warren General Hospital, at 2 Crescent Park West, Warren, PA 16365 in Warren County. The practice phone is (814) 723-4973.
- Warren General Hospital2 Crescent Park West, Warren, PA 16365 · Warren CountyPhone(814) 723-4973
Source: Dmand AI Affiliation Data
Dr. William Henry Wismer is affiliated with 7 sites of care and 3 medical groups
Dr. Wismer's primary practice is Warren General Hospital in Warren, Pennsylvania, part of Warren General Hospital. Dr. Wismer is also affiliated with Meadville Medical Center. The medical group on file is Medical Associates of Erie. Dmand AI also links Dr. Wismer to 2 more hospitals, 2 medical groups, 1 dialysis center, 1 group practice or clinic and 1 rural health 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. William Henry Wismer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wismer practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Warren General Hospital | Available with a free account |
| +6 more sites and 2 medical groups | 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 Warren General Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Henry Wismer is one of 899 gastroenterologists in Pennsylvania
Gastroenterology is Dr. Wismer's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Wismer is licensed in Pennsylvania.
Specialties and state licenses
- Gastroenterology, PennsylvaniaPrimary
Gastroenterologists near Dr. Wismer
Counts of gastroenterologists 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 Henry Wismer billed Medicare for 305 services in 2024
CMS data shows 305 Medicare services from Dr. Wismer across 6 procedure codes in 2024, for 185 Medicare patients. Medicare paid $35,434 for them.
Dr. Wismer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1732024: 1598%
- Office and hospital visits
- 2023: 1552024: 1466%
Where Dr. Wismer's Medicare services took place, 2024
- In an office16855%
- In a facility13745%
Dr. Wismer compared with the Pennsylvania median for gastroenterologists, 2024
- Dr. Wismer
- Pennsylvania median
- Medicare services
- 305vs 40124% below
- Medicare patients
- 185vs 29437% below
- Part D claims
- 733vs 37595% above
Medians across 899 gastroenterologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Wismer'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Henry Wismer treated 185 Medicare patients in 2024, average age 71
CMS counts 185 Medicare patients who saw Dr. Wismer in 2024. The largest group is 65 to 74, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Wismer's median patient age at 63, with 55% women.
Dr. Wismer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Wismer's Medicare patients by sex, 2024
- Women9149%
- Men9451%
Chronic conditions among Dr. Wismer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes34%
- Mood disorders24%
- Anxiety23%
- Depression23%
- Ischemic heart disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wismer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Henry Wismer wrote 802 Medicare Part D claims in 2024
In 2024, Dr. Wismer wrote 802 Medicare Part D claims for 172 patients. 83% of them were for generic drugs. CMS names the drug for 733 of them, across 12 drugs with 11 or more claims each, at $1,155,323 in total drug cost. In 2023, CMS named 799 claims across 11 drugs.
Dr. Wismer's Part D claims by kind of drug, 2024
- Generic666 claims83%
- Brand-name136 claims17%
Dr. Wismer'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7992024: 7338%
Drugs named by CMS: 12 in 2024, 11 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
Dr. William Henry Wismer scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Wismer for performance year 2024, reported through an alternative payment model (APM). Dr. Wismer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 97 procedures of colonoscopy by Dr. Wismer, more than 79% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Wismer's MIPS scores, performance year 2024
- 94of 100Final score
- 85of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Wismer ranks in Medicare procedure volume
- Colonoscopy
- 79th percentile97 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 67th percentile62 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. William Henry Wismer received $16,455 in industry payments from 2016 to 2025
CMS Open Payments shows 857 general payments to Dr. Wismer from 45 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $5,015.
General payments to Dr. Wismer by program year, 2016 to 2025
General payments to Dr. Wismer by kind, 2016 to 2025
- Food and beverage$16,423100%
- Education$330%
Companies that paid Dr. Wismer 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 Henry Wismer graduated from Lake Erie College of Osteopathic Medicine, Erie
Dr. Wismer graduated from Lake Erie College of Osteopathic Medicine, Erie in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Henry Wismer'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Henry Wismer
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 Henry Wismer's NPI number?
Dr. William Henry Wismer's NPI number is 1346292406. It was assigned on May 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Henry Wismer?
Dr. William Henry Wismer is a gastroenterologist in Warren, Pennsylvania. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. William Henry Wismer practice?
Dr. Wismer practices at 2 Crescent Park West, Warren, PA 16365. Dr. Wismer's primary practice is Warren General Hospital in Warren, Pennsylvania, part of Warren General Hospital. Dmand AI also links Dr. Wismer to 2 hospitals, 2 medical groups, 1 dialysis center, 1 group practice or clinic and 1 rural health clinic.
What is Dr. William Henry Wismer's office phone number?
The practice phone on file for Dr. Wismer is (814) 723-4973.
What is Dr. William Henry Wismer's medical license number?
Dr. Wismer holds Pennsylvania license OS-011918.
Which hospitals is Dr. William Henry Wismer affiliated with?
Dr. Wismer practices at Warren General Hospital in Warren, Pennsylvania. Dr. Wismer is also affiliated with Meadville Medical Center. Dmand AI links Dr. Wismer to 2 more hospitals.
What medical group is Dr. William Henry Wismer part of?
Dr. Wismer is linked to Medical Associates of Erie. Dmand AI links Dr. Wismer to 2 more medical groups.
Does Dr. William Henry Wismer accept Medicare?
Yes. CMS data shows Dr. Wismer billed Medicare for 305 services in 2024, and Dr. Wismer accepts Medicare assignment.
What is Dr. William Henry Wismer's MIPS score?
Dr. Wismer's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. William Henry Wismer see?
CMS counts 185 Medicare patients who saw Dr. Wismer in 2024, with an average age of 71.
Show 5 more questionsShow fewer questions
What services does Dr. William Henry Wismer bill to Medicare?
In 2024, Dr. Wismer's most billed Medicare services were surgery: digestive system (45380), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. William Henry Wismer go to medical school?
Dr. Wismer graduated from Lake Erie College of Osteopathic Medicine, Erie in 2000.
What drugs does Dr. William Henry Wismer prescribe most?
In 2024 Medicare Part D data, Dr. Wismer's most prescribed drugs by claims were Pantoprazole Sodium, Colestipol HCl and Omeprazole.
Has Dr. William Henry Wismer received payments from drug or device companies?
CMS Open Payments shows $16,455 in general payments to Dr. Wismer from 45 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. William Henry Wismer been practicing?
Dr. Wismer graduated from medical school in 2000, 26 years ago.
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