MARK J HAMILTON OD
NPI 1841275369
Optometrist in Seattle, WA
About Mark J Hamilton Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK J HAMILTON OD (NPI 1841275369) is an individual optometrist in Seattle, Washington, licensed in Washington (3374) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Indiana University - School Of Optometry (1983).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark J Hamilton Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mark Hamilton's NPI number?
The NPI number for Mark Hamilton is 1841275369. It was assigned to this individual provider in the NPPES registry on December 7, 2005.
Where is Mark Hamilton located?
Mark Hamilton practices at 999 3rd Ave, Seattle, WA 98104. The listed phone number is (260) 682-2020.
What is Mark Hamilton's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Mark Hamilton enrolled in Medicare?
Yes. Mark Hamilton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Mark Hamilton accept?
Health plans from Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 3 other insurers list Mark Hamilton as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mark Hamilton was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mark J Hamilton, OD · NPI 1841275369
Optometrist provider in Seattle, Washington. Individual provider, active in the CMS NPPES registry since December 7, 2005.
## Identity
- **NPI:** 1841275369 (Entity type: Individual)
- **Enumerated:** December 7, 2005
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 3374 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 999 3RD AVE, Seattle, WA 98104-4019
- **Phone:** (260) 682-2020 · **Fax:** (206) 332-0700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Medical school:** Indiana University - School Of Optometry, class of 1983
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1841275369) · Data from the CMS NPPES public registry.