Dr. William Frederick Ehni, MD
- Medicare services, 2024
- 553
- Medicare patients, 2024
- 166
- Part D claims, 2024
- 986
- MIPS score, 2024
- 94
- Hospital affiliations
- 2
- Practice address
- 1959 NE Pacific St Box 356151, Seattle, WA 98195
- Practice phone
- Call (206) 598-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ehni'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 Frederick Ehni is an infectious disease specialist in Seattle, Washington
Dr. Ehni practices at UW Medical Center - Montlake in Seattle, Washington, part of University of Washington.
Dr. Ehni's NPI, 1679502264, was assigned on July 3, 2006. Dr. Ehni graduated from University of Washington School of Medicine in 1982. Dr. Ehni holds Washington license AE2700385.
- NPI
- 1679502264NPI Registry (opens in a new tab)
- NPI enumeration date
- July 3, 2006
- NPI status
- Active
- Practice phone
- (206) 598-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Frederick Ehni practices at UW Medical Center - Montlake in Seattle, Washington
Dr. Ehni's primary practice is UW Medical Center - Montlake, at 1959 NE Pacific St Box 356151, Seattle, WA 98195 in King County. The practice phone is (206) 598-3300.
- UW Medical Center - Montlake1959 NE Pacific St Box 356151, Seattle, WA 98195 · King CountyPhone(206) 598-3300
Source: Dmand AI Affiliation Data
Dr. William Frederick Ehni is affiliated with 3 sites of care
Dr. Ehni's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. Dmand AI also links Dr. Ehni to 1 hospital and 1 hospital outpatient department, 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 Frederick Ehni's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ehni practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UW Medical Center - Montlake | 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 University of Washington and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Frederick Ehni is one of 218 infectious disease specialists in Washington
Infectious disease is Dr. Ehni's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Ehni is licensed in Washington.
Specialties and state licenses
- Infectious disease, WashingtonPrimary
Infectious disease specialists near Dr. Ehni
Counts of infectious disease specialists 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 Frederick Ehni billed Medicare for 553 services in 2024
CMS data shows 553 Medicare services from Dr. Ehni across 6 procedure codes in 2024, for 166 Medicare patients. Medicare paid $64,552 for them.
Dr. Ehni's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6002024: 5538%
Where Dr. Ehni's Medicare services took place, 2024
- In an office13725%
- In a facility41675%
Dr. Ehni compared with the Washington median for infectious disease specialists, 2024
- Dr. Ehni
- Washington median
- Medicare services
- 553vs 2012.8 times
- Medicare patients
- 166vs 9968% above
- Part D claims
- 830vs 1784.7 times
Medians across 213 infectious disease specialists in Washington with Dmand AI profiles that report each measure.
Dr. Ehni'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. Ehni?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ehni and other infectious disease specialists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Frederick Ehni treated 166 Medicare patients in 2024, average age 72
CMS counts 166 Medicare patients who saw Dr. Ehni in 2024. The largest group is 65 to 74, with 70 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.84, 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. Ehni's median patient age at 57, with 44% women.
Dr. Ehni's Medicare patients by age, 2024
Dr. Ehni's Medicare patients by sex, 2024
- Women7948%
- Men8752%
Chronic conditions among Dr. Ehni's Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Arthritis49%
- Anxiety39%
- Chronic kidney disease39%
- Diabetes39%
- Ischemic heart disease39%
- Mood disorders37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ehni's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Frederick Ehni wrote 986 Medicare Part D claims in 2024
In 2024, Dr. Ehni wrote 986 Medicare Part D claims for 149 patients. 74% of them were for generic drugs. CMS names the drug for 830 of them, across 35 drugs with 11 or more claims each, at $809,401 in total drug cost. In 2023, CMS named 740 claims across 30 drugs.
Dr. Ehni's Part D claims by kind of drug, 2024
- Generic729 claims74%
- Brand-name257 claims26%
Dr. Ehni'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. Ehni's Part D claims, 2024
- Antibiotics49%486 of 986 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: 7402024: 83012%
Drugs named by CMS: 35 in 2024, 30 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 Frederick Ehni 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. Ehni for performance year 2024, reported through an alternative payment model (APM).
Dr. Ehni's MIPS scores, performance year 2024
- 94of 100Final score
- 74.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William Frederick Ehni received $74 in industry payments from 2019 to 2021
CMS Open Payments shows 4 general payments to Dr. Ehni from 3 drug and device companies from 2019 to 2021. Education make up the largest share, 83% of the total. Paratek Pharmaceuticals, Inc. paid the most, $45.
General payments to Dr. Ehni by program year, 2019 to 2021
General payments to Dr. Ehni by kind, 2019 to 2021
- Education$6283%
- Food and beverage$1217%
Companies that paid Dr. Ehni the most, 2019 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Frederick Ehni graduated from University of Washington School of Medicine
Dr. Ehni graduated from University of Washington School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Frederick Ehni'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 | Clinician Public Reporting: Overall MIPS Performance (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 Frederick Ehni
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 Frederick Ehni's NPI number?
Dr. William Frederick Ehni's NPI number is 1679502264. It was assigned on July 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Frederick Ehni?
Dr. William Frederick Ehni is an infectious disease specialist in Seattle, Washington. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. William Frederick Ehni practice?
Dr. Ehni practices at 1959 NE Pacific St Box 356151, Seattle, WA 98195. Dr. Ehni's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. Dmand AI also links Dr. Ehni to 1 hospital and 1 hospital outpatient department.
What is Dr. William Frederick Ehni's office phone number?
The practice phone on file for Dr. Ehni is (206) 598-3300.
What is Dr. William Frederick Ehni's medical license number?
Dr. Ehni holds Washington license AE2700385.
Which hospitals is Dr. William Frederick Ehni affiliated with?
Dr. Ehni practices at UW Medical Center - Montlake in Seattle, Washington. Dmand AI links Dr. Ehni to 1 more hospital.
Does Dr. William Frederick Ehni accept Medicare?
Yes. CMS data shows Dr. Ehni billed Medicare for 553 services in 2024.
What is Dr. William Frederick Ehni's MIPS score?
Dr. Ehni'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 Frederick Ehni see?
CMS counts 166 Medicare patients who saw Dr. Ehni in 2024, with an average age of 72.
What services does Dr. William Frederick Ehni bill to Medicare?
In 2024, Dr. Ehni's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99214) and hospital inpatient care (99223).
Show 4 more questionsShow fewer questions
Where did Dr. William Frederick Ehni go to medical school?
Dr. Ehni graduated from University of Washington School of Medicine in 1982.
What drugs does Dr. William Frederick Ehni prescribe most?
In 2024 Medicare Part D data, Dr. Ehni's most prescribed drugs by claims were Cephalexin, Doxycycline Monohydrate and Amoxicillin-Clavulanate Potass.
Has Dr. William Frederick Ehni received payments from drug or device companies?
CMS Open Payments shows $74 in general payments to Dr. Ehni from 3 companies from 2019 to 2021. The largest total came from Paratek Pharmaceuticals, Inc.
How long has Dr. William Frederick Ehni been practicing?
Dr. Ehni graduated from medical school in 1982, 44 years ago.
Selling to infectious disease practices?
See infectious disease specialists in Washington by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card