Dr. William M. Nissen, MD
- Medicare services, 2021
- 249
- Part D claims, 2021
- 3,140
- Hospital affiliations
- 1
- Industry payments
- $313
- State license
- 1
- Practice address
- 801 Illini Dr, Silvis, IL 61282
- Practice phone
- Call (309) 281-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nissen'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 M. Nissen is a psychiatrist in Silvis, Illinois
Dr. Nissen practices at MercyOne Genesis Silvis Medical Center in Silvis, Illinois, part of Trinity Health.
Dr. Nissen's NPI, 1225097843, was assigned on March 22, 2006. Dr. Nissen holds Iowa license 18981.
- NPI
- 1225097843NPI Registry (opens in a new tab)
- NPI enumeration date
- March 22, 2006
- NPI status
- Active
- Practice phone
- (309) 281-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William M. Nissen practices at MercyOne Genesis Silvis Medical Center in Silvis, Illinois
Dr. Nissen's primary practice is MercyOne Genesis Silvis Medical Center, at 801 Illini Dr, Silvis, IL 61282 in Rock Island County. The practice phone is (309) 281-4000.
- MercyOne Genesis Silvis Medical Center801 Illini Dr, Silvis, IL 61282 · Rock Island CountyPhone(309) 281-4000
Source: Dmand AI Affiliation Data
Dr. William M. Nissen is affiliated with 1 site of care
Dr. Nissen's primary practice is MercyOne Genesis Silvis Medical Center in Silvis, Illinois, part of Trinity Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William M. Nissen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nissen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne Genesis Silvis Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William M. Nissen is one of 1,527 psychiatrists in Illinois
Psychiatry is Dr. Nissen's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Nissen is licensed in Iowa.
Specialties and state licenses
- Psychiatry, IowaPrimary
Psychiatrists near Dr. Nissen
Counts of psychiatrists 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 M. Nissen billed Medicare for 249 services in 2021
CMS data shows 249 Medicare services from Dr. Nissen across 2 procedure codes in 2021. Medicare paid $11,001 for them. Every service was in an office.
Dr. Nissen's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 3482021: 18248%
- Tests and treatments
- 2020: 1212021: 6745%
Dr. Nissen compared with the Illinois median for psychiatrists, 2021
- Dr. Nissen
- Illinois median
- Medicare services
- 249vs 20323% above
- Part D claims
- 3,140vs 17418.0 times
Medians across 1,588 psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. Nissen's most billed Medicare procedure codes, 2021
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nissen and other psychiatrists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William M. Nissen's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Nissen's median patient age at 69, with 100% women.
Dr. Nissen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. William M. Nissen wrote 3,140 Medicare Part D claims in 2021
In 2021, Dr. Nissen wrote 3,140 Medicare Part D claims. They cover 51 drugs, with $400,510 in total drug cost. In 2020, CMS named 3,652 claims across 57 drugs.
Dr. Nissen's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 3,6522021: 3,14014%
Drugs named by CMS: 51 in 2021, 57 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William M. Nissen received $313 in industry payments from 2016 to 2021
CMS Open Payments shows 21 general payments to Dr. Nissen from 10 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $95.
General payments to Dr. Nissen by program year, 2016 to 2021
Companies that paid Dr. Nissen the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William M. Nissen'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 M. Nissen
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 M. Nissen's NPI number?
Dr. William M. Nissen's NPI number is 1225097843. It was assigned on March 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William M. Nissen?
Dr. William M. Nissen is a psychiatrist in Silvis, Illinois. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. William M. Nissen practice?
Dr. Nissen practices at 801 Illini Dr, Silvis, IL 61282. Dr. Nissen's primary practice is MercyOne Genesis Silvis Medical Center in Silvis, Illinois, part of Trinity Health.
What is Dr. William M. Nissen's office phone number?
The practice phone on file for Dr. Nissen is (309) 281-4000.
What is Dr. William M. Nissen's medical license number?
Dr. Nissen holds Iowa license 18981.
Which hospitals is Dr. William M. Nissen affiliated with?
Dr. Nissen practices at MercyOne Genesis Silvis Medical Center in Silvis, Illinois.
Does Dr. William M. Nissen accept Medicare?
Yes. CMS data shows Dr. Nissen billed Medicare for 249 services in 2021.
What services does Dr. William M. Nissen bill to Medicare?
In 2021, Dr. Nissen's most billed Medicare services were office visit, established patient (99214) and infusion or chemotherapy administration (96372).
What drugs does Dr. William M. Nissen prescribe most?
In 2021 Medicare Part D data, Dr. Nissen's most prescribed drugs by claims were Alprazolam, Trazodone HCl and Clonazepam.
Has Dr. William M. Nissen received payments from drug or device companies?
CMS Open Payments shows $313 in general payments to Dr. Nissen from 10 companies from 2016 to 2021. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. William M. Nissen been practicing?
Dr. Nissen's NPI was assigned in 2006.
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