KENNETH M GROSS MD
NPI 1831155969
Internal Medicine - Endocrinology, Diabetes & Metabolism in Seattle, WA
About Kenneth M Gross Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KENNETH M GROSS MD (NPI 1831155969) is an individual endocrinology, diabetes & metabolism provider in Seattle, Washington, licensed in Washington (MD00020430) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Everett.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Kenneth M Gross Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Kenneth Gross reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 911 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 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 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98104
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 Kenneth Gross's NPI number?
The NPI number for Kenneth Gross is 1831155969. It was assigned to this individual provider in the NPPES registry on April 26, 2006.
Where is Kenneth Gross located?
Kenneth Gross practices at 904 7th Ave, Seattle, WA 98104. The listed phone number is (206) 329-1760.
What is Kenneth Gross's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Kenneth Gross enrolled in Medicare?
Yes. Kenneth Gross is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Kenneth Gross's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Gross reassigns Medicare benefits to 2 organizations: The Polyclinic (Seattle, WA) and Optum Care Washington PLLC (Everett, 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 Kenneth Gross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Kenneth Gross was last updated on August 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Kenneth M Gross, MD · NPI 1831155969
Endocrinology, Diabetes & Metabolism physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since April 26, 2006.
## Identity
- **NPI:** 1831155969 (Entity type: Individual)
- **Enumerated:** April 26, 2006
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** MD00020430 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 904 7TH AVE, Seattle, WA 98104-1132
- **Phone:** (206) 329-1760
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Polyclinic (NPI 1962824219, Seattle, WA); Optum Care Washington PLLC (NPI 1831186766, Everett, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 30, 2023
- **Other identifiers:** Other 069741009 (WA); Medicaid 8114050 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1831155969) · Data from the CMS NPPES public registry.