Gary Martin Martz, D.O.
Internal Medicine Physician · Seattle, WA
Gary Martin Martz, D.O. is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1952408205, issued on Sep 20, 2006. Check the license (Washington OP60069825, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Gary Martin Martz
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- OP60069825 WA
OP60068825 WA
11139 MS
OS005995L PA
0102050068 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1660 South Columbian Way, Seattle, WA 98108
- Phone
- (253) 583-1172
- Enumerated
- Sep 20, 2006
- Record last updated
- Mar 16, 2022
- Fax
- (206) 764-2187
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 1660 South Columbian Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary Martin Martz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP60069825Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
63 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Jardiance16 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.
Gary Martin Martz among 3,079 internal medicine physician records in Washington
Gary Martin Martz, D.O. 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 updated2022 · 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
- Douglas Berger, MDSeattle, WA 981081295748762
- Edward Boyko, M.D.Seattle, WA 981081831295401
- Paul Cornia, M.D.Seattle, WA 981081730291782
- Danielle Frank, M.D.Seattle, WA 981081518063213
- Sharon Gill, MDSeattle, WA 981081306956834
- Jan Hirschmann, MDSeattle, WA 981081770692402
- Kamala Jain, MDSeattle, WA 981081770680886
- Mehraneh Khalighi, MDSeattle, WA 981081710089693
Common questions
What is Gary Martin Martz, D.O.'s NPI number?
Gary Martin Martz, D.O.'s National Provider Identifier (NPI) is 1952408205, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Martin Martz, D.O. located?
The NPPES record lists a practice address at 1660 South Columbian Way, Seattle, WA, 98108. Phone: (253) 583-1172. Providers update this record themselves, so call before visiting.
How can I verify Gary Martin Martz, D.O.'s license?
NPPES lists Washington license number OP60069825, 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 Gary Martin Martz, D.O. prescribe under Medicare Part D?
In 2024, Gary Martin Martz, D.O. had 63 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.