DR. NICHOLAS MAXWELL MARK (M.D.) – Critical Care Medicine (Internal Medicine) Physician, NPI 1023317757
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
419 CRITICAL CARE (INTENSIVISTS) in WA
Provider Addresses for DR. NICHOLAS MAXWELL MARK (M.D.)
925 SENECA ST
SEATTLE, WA 981012742
Phone: (206) 223-6600
Type: Mailing
1959 NE Pacific St Rm Bb-527
Box 356421
Seattle, WA 981956421
Phone: (206) 543-3605
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $1,925.
Total Amount is formed as General ($1,925) + Research ($0) + Ownership ($0) = $1,925.
Last reported payment date: 2024-10-21 • Largest payer in this snapshot: FUJIFILM SonoSite, Inc. ($1,400).
Total Amount
$1,925
General + Research + Ownership
Payments
3
Total payment records
General Amount
$1,925
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| FUJIFILM SonoSite, Inc. | $1,400 |
| FUJIFILM Sonosite, Inc. | $525 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2015-10-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20151007000390 | I | Critical Care (Intensivists) | WA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 47 | 42 | $0 |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | 13 | 13 | $0 |
| 36556 | Insertion of non-tunneled central venous tube for infusion (5 years or older) | 11 | 11 | $0 |
Insurance plans in this area (ZIP 98101)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | WA | |
| General Surgery | WA | |
| Orthopedic Surgery | WA | |
| P S Y C H I A T R Y | WA | |
| Hospitalist, Hospice/Palliative Care, Internal Medicine | WA | |
| Hospitalist, Hospice/Palliative Care | WA | |
| Physician Assistant | WA | |
| Nurse Practitioner | WA | |
| N E U R O L O G Y | WA | |
| Hospitalist, Hospice/Palliative Care, Internal Medicine | ND |
Reviews
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