Stephan Dittle Fihn, MD
Internal Medicine Physician · Seattle, WA
Stephan Dittle Fihn, MD is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1225098320, issued on Mar 24, 2006. Check the license (Washington MD00016664, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Stephan Dittle Fihn
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00016664 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Minor Ave, Seattle, WA 98101
- Phone
- (206) 764-2651
- Enumerated
- Mar 24, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (206) 764-2935
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Verify Stephan Dittle Fihn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00016664Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,011 Medicare Part D claims for 39 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium58 claims
- Omeprazole47 claims
- Amlodipine Besylate46 claims
- Gabapentin36 claims
- Fluticasone Propionate31 claims
- Simvastatin31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Stephan Dittle Fihn among 3,079 internal medicine physician records in Washington
Stephan Dittle Fihn, MD is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 internal medicine physician records list a practice address in Seattle
They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Seattle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lesley Althouse, MDSeattle, WA 981011669402608
- Leslie Bailey, M.D.Seattle, WA 981011255366613
- A Bender, MDSeattle, WA 981011265462634
- Christopher Carlsten, MDSeattle, WA 981011891734208
- Richard Furlong, MDSeattle, WA 981011457370777
- Carrie Horwitch, MDSeattle, WA 981011477574325
- Paul Kassab, MDSeattle, WA 981011740287275
- John Kirkpatrick, MDSeattle, WA 981011487678629
Common questions
What is Stephan Dittle Fihn, MD's NPI number?
Stephan Dittle Fihn, MD's National Provider Identifier (NPI) is 1225098320, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephan Dittle Fihn, MD located?
The NPPES record lists a practice address at 1100 Minor Ave, Seattle, WA, 98101. Phone: (206) 764-2651. Providers update this record themselves, so call before visiting.
How can I verify Stephan Dittle Fihn, MD's license?
NPPES lists Washington license number MD00016664, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephan Dittle Fihn, MD prescribe under Medicare Part D?
In 2024, Stephan Dittle Fihn, MD had 1,011 Medicare Part D claims for 39 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stephan Dittle Fihn, MD's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.