ANDREW GROSSMAN ARNP
NPI 1134483266
Nurse Practitioner - Adult Health in Seattle, WA
About Andrew Grossman Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW GROSSMAN ARNP (NPI 1134483266) is an individual adult health provider in Seattle, Washington, licensed in Washington (AP60282819) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Andrew Grossman Arnp 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.
Medicare Billing Reassignments
3Medicare enrollment records show Andrew Grossman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98103
- Reassigned Medicare billing, Washington enrollment
- 6 clinicians in this Medicare group
Seattle, WA 98125
- Reassigned Medicare billing, Washington enrollment
Seattle, WA 98112
- Reassigned Medicare billing, Washington enrollment
- 66 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Andrew Grossman's NPI number?
The NPI number for Andrew Grossman is 1134483266. It was assigned to this individual provider in the NPPES registry on July 3, 2012.
Where is Andrew Grossman located?
Andrew Grossman practices at 5223 Kensington Pl N, Seattle, WA 98103. The listed phone number is (206) 498-0453.
What is Andrew Grossman's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Andrew Grossman enrolled in Medicare?
Yes. Andrew Grossman 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.
Which organizations bill Medicare for Andrew Grossman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Grossman reassigns Medicare benefits to 3 organizations: Optimus Senior Health Consultants, PLLC (Seattle, WA), Collaborative Care PLLC (Seattle, WA) and Seattle Roots Community Health (Seattle, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Andrew Grossman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Grossman accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Andrew Grossman 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 Andrew Grossman was last updated on July 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.
# Andrew Grossman, ARNP · NPI 1134483266
Adult Health physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since July 3, 2012.
## Identity
- **NPI:** 1134483266 (Entity type: Individual)
- **Enumerated:** July 3, 2012
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** AP60282819 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5223 KENSINGTON PL N, Seattle, WA 98103-6225
- **Phone:** (206) 498-0453
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Optimus Senior Health Consultants, PLLC (NPI 1407586456, Seattle, WA); Collaborative Care PLLC (NPI 1184419376, Seattle, WA); Seattle Roots Community Health (NPI 1629055900, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** July 3, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1134483266) · Data from the CMS NPPES public registry.