Dennis J. Haack, M.D.
Family Medicine Physician · Seattle, WA
Dennis J. Haack, M.D. is a family medicine physician with a practice address in Seattle, Washington, and NPI 1417052648, issued on Sep 13, 2006. Check the license (Washington MD00026317, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Dennis J. Haack
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD00026317 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9245 Rainier Ave S, Seattle, WA 98118
- Phone
- (206) 548-5850
- Enumerated
- Sep 13, 2006
- Record last updated
- Jan 5, 2024
- Medicare enrollment
- Enrolled (PECOS I20041215000500); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1984
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 9245 Rainier Ave S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jacquelyn Baumann, CNM, ARNPAdvanced Practice Midwife1942813761
- Athena Bautista, D.D.S.Dentist1518350560
Verify Dennis J. Haack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00026317Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average family medicine physician in 2024
757 Medicare Part D claims for 147 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium78 claims
- Amlodipine Besylate41 claims
- Gabapentin26 claims
- Lisinopril24 claims
- Metformin Hcl Er23 claims
- Albuterol Sulfate Hfa20 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.
Bills Medicare through one group practice
- Neighborcare HealthSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis J. Haack among 5,534 family medicine physician records in Washington
Dennis J. Haack, M.D. is one of 5,534 family medicine physician records with a practice address in Washington. 73% 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, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2009 among the 3,294 with a school on file
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
871 family medicine physician records list a practice address in Seattle
They are 871 of the 41,956 NPPES records with a practice address in Seattle, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Seattle → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Quynh Bui, M.D.Seattle, WA 981181639286388
- Kimberley Herner, MDSeattle, WA 981181740202514
- Kristen Kelly, MDSeattle, WA 981181417057407
- Jinna Kim, MDSeattle, WA 981181487764866
- Ling Lee, M.D.Seattle, WA 981181669489928
- Jeffrey Lee, MDSeattle, WA 981181558471987
- James Park, MDSeattle, WA 981181285647925
- Colin Romero, MDSeattle, WA 981181023127784
Common questions
What is Dennis J. Haack, M.D.'s NPI number?
Dennis J. Haack, M.D.'s National Provider Identifier (NPI) is 1417052648, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis J. Haack, M.D. located?
The NPPES record lists a practice address at 9245 Rainier Ave S, Seattle, WA, 98118. Phone: (206) 548-5850. Providers update this record themselves, so call before visiting.
How can I verify Dennis J. Haack, M.D.'s license?
NPPES lists Washington license number MD00026317, 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 Dennis J. Haack, M.D. prescribe under Medicare Part D?
In 2024, Dennis J. Haack, M.D. had 757 Medicare Part D claims for 147 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.