John Hamilton Addison, MD
Geriatric Medicine (Internal Medicine) Physician · Mercer Island, WA
John Hamilton Addison, MD is a geriatric medicine (internal medicine) physician with a practice address in Mercer Island, Washington, and NPI 1659323087, issued on May 16, 2006. Check the license (Washington MD00018359, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- John Hamilton Addison
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License numbers
- MD00018359 WA
DR.0072381 CO
Self-reported in NPPES; status is on the state search - Practice location
- 9725 SE 36TH St Ste 214, Mercer Island, WA 98040
- Phone
- (206) 275-3588
- Enumerated
- May 16, 2006
- Record last updated
- Sep 27, 2024
- Fax
- (206) 275-2073
- Medicaid IDs
- 0186507 WA
9000231634 CO - Medicare enrollment
- Enrolled (PECOS I20240607002468); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 97 in Washington → Look up another NPI →
Also registered at 9725 SE 36TH St Ste 214
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Curtis, ARNPAdult Health Nurse Practitioner1477989895
Verify John Hamilton Addison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00018359Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
1,411 Medicare Part D claims for 101 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 15 claims were for opioids.
Most prescribed
- Quetiapine Fumarate74 claims
- Trazodone Hcl66 claims
- Levothyroxine Sodium64 claims
- Duloxetine Hcl47 claims
- Metoprolol Succinate46 claims
- Atorvastatin Calcium43 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.
Industry payments in 2024: $112.30
1 payment: food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
3 hospitals and group practices
- Boulder Community HealthBoulder, CO · Acute Care Hospitals4 of 5 stars
- John H Addison MD PSMercer Island, WA
- Legacy Healthcare Services IncDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John Hamilton Addison among 97 geriatric medicine (internal medicine) physician records in Washington
John Hamilton Addison, MD is one of 97 geriatric medicine (internal medicine) physician records with a practice address in Washington. 66% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 39% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated1979 · median 2004 among the 47 with a school on file
- Record last updated2024 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Washington
There are 97 geriatric medicine (internal medicine) physician records in Washington.
All 97 in Washington → Every provider in Mercer Island → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Neeti Mittal, MDMercer Island, WA 980401023069317
- Vernan AtienzaKirkland, WA 980341851402440
- Marissa Black, M.D.Kirkland, WA 980341114269735
- Arthur Israel, MDKirkland, WA 980341255313185
- Richard Lipsky, MDKirkland, WA 980341689656563
- Connie Smith, MDKirkland, WA 980341578546768
- Arti Tayade, M.D.Redmond, WA 980531134296452
- Yen-Tsun Lai, M.D.Renton, WA 980551790727535
Common questions
What is John Hamilton Addison, MD's NPI number?
John Hamilton Addison, MD's National Provider Identifier (NPI) is 1659323087, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Hamilton Addison, MD located?
The NPPES record lists a practice address at 9725 SE 36TH St Ste 214, Mercer Island, WA, 98040. Phone: (206) 275-3588. Providers update this record themselves, so call before visiting.
How can I verify John Hamilton Addison, MD's license?
NPPES lists Washington license number MD00018359, 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 John Hamilton Addison, MD prescribe under Medicare Part D?
In 2024, John Hamilton Addison, MD had 1,411 Medicare Part D claims for 101 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.