DR. MARK DAVID SULLIVAN M.D.
NPI 1952341869
Internal Medicine in Seattle, WA
About Dr. Mark David Sullivan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK DAVID SULLIVAN M.D. (NPI 1952341869) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD00046141) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center / Cherry Hill, and is a graduate of University Of Washington School Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Dr. Mark David Sullivan M.d. 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 2
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Swedish Medical Center / Cherry Hill
Acute Care Hospitals · Seattle, WASwedish Medical Center
Acute Care Hospitals · Seattle, WASwedish Issaquah
Acute Care Hospitals · Issaquah, WAPhysician 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
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 Sullivan's NPI number?
The NPI number for Mark Sullivan is 1952341869. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is Mark Sullivan located?
Mark Sullivan practices at 325 9th Ave, Seattle, WA 98104. The listed phone number is (206) 731-3074.
What is Mark Sullivan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Sullivan enrolled in Medicare?
Yes. Mark Sullivan 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 Sullivan accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Mark Sullivan 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.
Is Mark Sullivan affiliated with any hospitals?
According to CMS data, Mark Sullivan is affiliated with Swedish Medical Center / Cherry Hill, Swedish Medical Center and Swedish Issaquah.
When was this NPI record last updated?
The NPPES record for Mark Sullivan was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Dr. Mark David Sullivan, M.D. · NPI 1952341869
Internal Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1952341869 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD00046141 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 325 9TH AVE, Seattle, WA 98104-2420
- **Phone:** (206) 731-3074
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** University Of Washington School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** September 11, 2025
- **Other identifiers:** Medicaid 8454142 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1952341869) · Data from the CMS NPPES public registry.