Ian Merrill, MD
Sleep Medicine (Psychiatry & Neurology) Physician · Seattle, WA
Ian Merrill, MD is a sleep medicine (psychiatry & neurology) physician with a practice address in Seattle, Washington, and NPI 1245350164, issued on Apr 2, 2007. Check the license (Washington MD 00047983, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ian Merrill
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
- License number
- MD 00047983 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1536 N 115TH St, Seattle, WA 98133
- Phone
- (206) 386-4744
- Enumerated
- Apr 2, 2007
- Record last updated
- Apr 21, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (206) 215-1135
- Medicare enrollment
- Enrolled (PECOS I20070827000855); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (psychiatry & neurology) physician records → All 30 in Washington → Look up another NPI →
Also registered at 1536 N 115TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Atkinson, R.NRegistered Nurse1902910037
- George Baxter-Holder, ARNPAdult Health Nurse Practitioner1649433251
- Leonardo Bentivoglio, MS, CEPClinical Exercise Physiologist1801747324
- Samantha Burns, PHDPsychologist1548571904
- Joshua Cooper, MDPlastic and Reconstructive Surgery Physician1528225810
- Anne Croghan, ARNPNurse Practitioner1912978768
Verify Ian Merrill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD 00047983Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024
389 Medicare Part D claims for 74 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Gabapentin118 claims
- Trazodone Hcl42 claims
- Zolpidem Tartrate42 claims
- Ropinirole Hcl31 claims
- Pramipexole Dihydrochloride26 claims
- Modafinil20 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 practice group's MIPS final score for 2023 (Medicare payment program): 82.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Merrill among 30 sleep medicine (psychiatry & neurology) physician records in Washington
Ian Merrill, MD is one of 30 sleep medicine (psychiatry & neurology) physician records with a practice address in Washington. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 37% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2002 · median 2002 among the 21 with a school on file
- Record last updated2014 · 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 2084S0012X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Psychiatry & Neurology) Physician providers in Washington
There are 30 sleep medicine (psychiatry & neurology) physician records in Washington.
All 30 in Washington → Every provider in Seattle → Sleep Medicine (Psychiatry & Neurology) Physician nationwide →
The 8 sleep medicine (psychiatry & neurology) physician records with the nearest ZIP codes
- Meghana Doreswamy, MDSeattle, WA 981221295791713
- Anand Gersappe, MD, PHDSeattle, WA 981221013929132
- Ralph Pascualy, MDSeattle, WA 981221912067331
- Sarah Stolz, MDSeattle, WA 981221053471425
- Catherine McCallSeattle, WA 981081730421157
- Flavia Consens, MDSeattle, WA 981041891884755
- Nathaniel Watson, MDSeattle, WA 981041528144342
- Brandon Peters-Mathews, M.D.Seattle, WA 981011295907566
Common questions
What is Ian Merrill, MD's NPI number?
Ian Merrill, MD's National Provider Identifier (NPI) is 1245350164, issued on Apr 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ian Merrill, MD located?
The NPPES record lists a practice address at 1536 N 115TH St, Seattle, WA, 98133. Phone: (206) 386-4744. Providers update this record themselves, so call before visiting.
How can I verify Ian Merrill, MD's license?
NPPES lists Washington license number MD 00047983, 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 Ian Merrill, MD prescribe under Medicare Part D?
In 2024, Ian Merrill, MD had 389 Medicare Part D claims for 74 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. Part D covers Medicare prescriptions only.
What is Ian Merrill, MD's MIPS final score?
The 2023 MIPS final score is 82.8 of 100, reported for the practice group. 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.