CLARK O. PARRISH (M.D.) – Internal Medicine Physician, NPI 1891791232
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,056 INTERNAL MEDICINE in WA
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Provider Addresses for CLARK O. PARRISH (M.D.)
PO BOX 5096
BELLINGHAM, WA 982275096
Phone: (360) 738-2200
Fax: (360) 715-2486
Type: Mailing
4545, Cordata Parkway, Cordata, Bellingham, Whatcom County, Washington, 98226, United States
BELLINGHAM, WA 982267123
Phone: (360) 738-2200
Fax: (360) 715-2486
Type: Location
1117 Spring St
Friday Harbor, WA 982509782
Phone: (360) 378-2141
Fax: (360) 378-1785
Type: Location
1990 Hospital Dr Ste 200
Sedro Woolley, WA 982849315
Phone: (360) 856-8810
Fax: (360) 714-2520
Type: Location
390 9th St
Florence, OR 974399470
Phone: (541) 997-7134
Fax: (541) 902-1319
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2008-05-12
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 |
|---|---|---|---|---|
| I20080512000767 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 120 | 117 | $0 |
Insurance plans in this area (ZIP 98227)
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Provider's Procedures
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