Dr. Stephan Dittle Fihn, MD
- Medicare services, 2023
- 40
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 1,011
- Publications
- 108
- MIPS score, 2024
- 94
- Practice address
- 325 9th Avenue, Seattle, WA 98104
- Practice phone
- Call (206) 744-9535
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Fihn's professional email, personal email and mobile number
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Dr. Stephan Dittle Fihn is an internist in Seattle, Washington
Dr. Fihn practices at Harborview Medical Center in Seattle, Washington, part of University of Washington.
Dr. Fihn's NPI, 1225098320, was assigned on March 24, 2006. Dr. Fihn graduated from Saint Louis University School of Medicine in 1977. Dr. Fihn holds Washington license MD00016664.
- NPI
- 1225098320NPI Registry (opens in a new tab)
- NPI enumeration date
- March 24, 2006
- NPI status
- Active
- Practice phone
- (206) 744-9535
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Stephan Dittle Fihn practices at Harborview Medical Center in Seattle, Washington
Dr. Fihn's primary practice is Harborview Medical Center, at 325 9th Avenue, Seattle, WA 98104 in King County. The practice phone is (206) 744-9535.
- Harborview Medical Center325 9th Avenue, Seattle, WA 98104 · King CountyPhone(206) 744-9535
Source: Dmand AI Affiliation Data
Dr. Stephan Dittle Fihn is affiliated with 1 medical group
Dr. Fihn's primary practice is Harborview Medical Center in Seattle, Washington, part of University of Washington. The medical group on file is UW Physicians.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephan Dittle Fihn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fihn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Harborview Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephan Dittle Fihn is one of 2,689 internists in Washington
Internal medicine is Dr. Fihn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Fihn is licensed in Washington.
Specialties and state licenses
- Internal medicine, WashingtonPrimary
Internists near Dr. Fihn
Counts of internists 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. Stephan Dittle Fihn billed Medicare for 40 services in 2023
CMS data shows 40 Medicare services from Dr. Fihn across 1 procedure code in 2023, all of them office visits, for 11 Medicare patients. Medicare paid $2,767 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Fihn's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 532023: 4025%
Dr. Fihn compared with the Washington median for internists, 2023
- Dr. Fihn
- Washington median
- Medicare services
- 40vs 36489% below
- Medicare patients
- 11vs 16593% below
- Part D claims
- 691vs 1823.8 times
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. Fihn's most billed Medicare procedure codes, 2023
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. Fihn and other internists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephan Dittle Fihn treated 11 Medicare patients in 2024, average age 68
CMS counts 11 Medicare patients who saw Dr. Fihn in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.69, 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. Fihn's median patient age at 65, with 17% women.
Dr. Fihn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Fihn's 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
- Women17%
- Men83%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephan Dittle Fihn wrote 1,011 Medicare Part D claims in 2024
In 2024, Dr. Fihn wrote 1,011 Medicare Part D claims for 39 patients. 88% of them were for generic drugs. CMS names the drug for 691 of them, across 33 drugs with 11 or more claims each, at $31,694 in total drug cost. In 2023, CMS named 942 claims across 42 drugs.
Dr. Fihn's Part D claims by kind of drug, 2024
- Generic887 claims88%
- Brand-name and other124 claims12%
Dr. Fihn'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. Fihn's Part D claims, 2024
- Opioids3%26 of 1,011 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: 9422024: 69127%
Drugs named by CMS: 33 in 2024, 42 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. Stephan Dittle Fihn 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. Fihn for performance year 2024, reported through an alternative payment model (APM).
Dr. Fihn'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
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Dr. Stephan Dittle Fihn has 108 publications on record
Dmand AI links 108 papers to Dr. Fihn, published from 2009 to 2025. 2019 was the busiest year, with 11. The most frequent topics are United States Department of Veterans Affairs, Veterans and Primary Health Care. Dr. Fihn has published most often in JAMA Netw Open. Dr. Fihn's most frequent co-authors are Karin M. Nelson, MD, John S. Rumsfeld, MD, PhD and Ashok Reddy, MD.
Dr. Fihn's papers by year, 2016 to 2025
Topics Dr. Fihn writes about most
- United States Department of Veterans Affairs
- Veterans
- Primary Health Care
- Patient-Centered Care
- Hospitals, Veterans
- Veterans Health
- Patient Care Team
- Socioeconomic Factors
Dr. Fihn's most frequent co-authors
- Karin M. Nelson, MD47 shared papers
- John S. Rumsfeld, MD, PhD9 shared papers
- Ashok Reddy, MD6 shared papers
Recent publications by Dr. Fihn
See who Dr. Fihn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fihn works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephan Dittle Fihn graduated from Saint Louis University School of Medicine
Dr. Fihn graduated from Saint Louis University School of Medicine in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephan Dittle Fihn'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Stephan Dittle Fihn
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. Stephan Dittle Fihn's NPI number?
Dr. Stephan Dittle Fihn's NPI number is 1225098320. It was assigned on March 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephan Dittle Fihn?
Dr. Stephan Dittle Fihn is an internist in Seattle, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephan Dittle Fihn practice?
Dr. Fihn practices at 325 9th Avenue, Seattle, WA 98104. Dr. Fihn's primary practice is Harborview Medical Center in Seattle, Washington, part of University of Washington.
What is Dr. Stephan Dittle Fihn's office phone number?
The practice phone on file for Dr. Fihn is (206) 744-9535.
What is Dr. Stephan Dittle Fihn's medical license number?
Dr. Fihn holds Washington license MD00016664.
Which hospitals is Dr. Stephan Dittle Fihn affiliated with?
Dr. Fihn practices at Harborview Medical Center in Seattle, Washington.
What medical group is Dr. Stephan Dittle Fihn part of?
Dr. Fihn is linked to UW Physicians.
Does Dr. Stephan Dittle Fihn accept Medicare?
Yes. CMS data shows Dr. Fihn billed Medicare for 40 services in 2023.
What is Dr. Stephan Dittle Fihn's MIPS score?
Dr. Fihn'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. Stephan Dittle Fihn see?
CMS counts 11 Medicare patients who saw Dr. Fihn in 2024, with an average age of 68.
Show 6 more questionsShow fewer questions
What services does Dr. Stephan Dittle Fihn bill to Medicare?
In 2023, Dr. Fihn's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Stephan Dittle Fihn go to medical school?
Dr. Fihn graduated from Saint Louis University School of Medicine in 1977.
What drugs does Dr. Stephan Dittle Fihn prescribe most?
In 2024 Medicare Part D data, Dr. Fihn's most prescribed drugs by claims were Atorvastatin Calcium, Omeprazole and Amlodipine Besylate.
How long has Dr. Stephan Dittle Fihn been practicing?
Dr. Fihn graduated from medical school in 1977, 49 years ago.
Does Dr. Stephan Dittle Fihn do research?
Dmand AI links 108 publications to Dr. Fihn, published from 2009 to 2025.
Who does Dr. Stephan Dittle Fihn publish with?
Dr. Fihn's most frequent co-authors are Karin M. Nelson, MD (47 shared papers), John S. Rumsfeld, MD, PhD (9 shared papers) and Ashok Reddy, MD (6 shared papers).
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