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PUGET SOUND GASTROENTEROLOGY, PLLC
NPI 1033132956
Internal Medicine - Gastroenterology in Edmonds, WA

Active since July 25, 2006
21600 HWY 99, SUITE 260, EDMONDS, WA 98026(425) 774-2650(425) 774-2643 Get Directions Write a Review

NPPES record last updated: May 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 16, 2025, Feb 13, 2025, Dec 12, 2019 (3 updates tracked since 2019).

About Puget Sound Gastroenterology, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PUGET SOUND GASTROENTEROLOGY, PLLC (NPI 1033132956), doing business as Puget Sound Gastroenterology At Edmonds, is a healthcare organization registered as a gastroenterology in Edmonds, Washington and active in the NPI registry since July 2006. The organization lists Alan Oliver, Ceo, as its authorized official.

NPPES Registry Identity

NPI1033132956
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NamePUGET SOUND GASTROENTEROLOGY, PLLC
Location Address21600 HWY 99, SUITE 260Edmonds, WA 98026-8012
Mailing AddressPo Box 34888Seattle, WA 98124-1888 · (425) 977-4620 · Fax (425) 745-9836
Phone(425) 774-2650
Fax(425) 774-2643
Organization SubpartNo
Authorized OfficialAlan OliverCeo · (786) 530-3820
Enumeration DateJuly 25, 2006
Last NPPES UpdateMay 16, 20253 updates tracked since enumeration
NPPES CertifiedMay 16, 2025
✔ NPI 1033132956 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
21600 HWY 99, Edmonds, WA 98026
Open in Google Maps ↗

Other Names 1

Doing Business AsPuget Sound Gastroenterology At Edmonds

Other Identifiers 2

Other0037140WA · Labor And Industries
Medicaid1042580WA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Puget Sound Gastroenterology, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

83

Medicare enrollment records show 83 clinicians reassign Medicare billing to Puget Sound Gastroenterology, PLLC, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 29 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Gastroenterology48
Nurse Practitioner27
Pathology6
Internal Medicine2

Nearest to this location (20)

See all 83
Roberta Aflatooni, ARNP
Nurse Practitioner
NPI 1972581387
21600 HIGHWAY 99 STE 230
Edmonds, WA 98026
(206) 215-4250
✔ PECOS✔ Accepts MedicareSame address
Crystal Bernstein, M.D.
Gastroenterology
NPI 1326019167
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Victoria Gasparyan, ARNP
Nurse Practitioner
NPI 1912268004
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
David Liang, M.D.
Gastroenterology
NPI 1619178027
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Klaus Mergener, M.D.
Gastroenterology
NPI 1578537031
21600 HIGHWAY 99 STE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Jason Schneier, MD
Gastroenterology
NPI 1174544712
21600 HWY 99 SUITE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
Jinfeng Guo, MD
Gastroenterology
NPI 1912924739
21600 HWY 99 SUITE 260
Edmonds, WA 98026
(425) 774-2650
✔ PECOS✔ Accepts MedicareSame address
John Carpenter, MD
Pathology
NPI 1225209471
19000 33RD AVE W STE 230
Lynnwood, WA 98036
(425) 686-7138
✔ PECOS✔ Accepts Medicare2.9 mi
Juliann Mendes, D.O.
Pathology
NPI 1972036234
19000 33RD AVE W STE 230
Lynnwood, WA 98036
(425) 686-7138
✔ PECOS✔ Accepts Medicare2.9 mi
Gregory Bernstein, MD
Gastroenterology
NPI 1598056673
11027 MERIDIAN AVE N STE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.4 mi
Praveen Guturu, MBBS, MD
Gastroenterology
NPI 1285825463
11027 MERIDIAN AVE N STE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.4 mi
Steven Lewis, MD
Gastroenterology
NPI 1497725238
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS6.5 mi
Alexandra Read, MD
Gastroenterology
NPI 1528039989
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS6.5 mi
Darik Taniguchi, M.D.
Gastroenterology
NPI 1750359105
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.5 mi
Wataru Tamura, MD
Gastroenterology
NPI 1073658365
11027 MERIDIAN AVE N SUITE 100
Seattle, WA 98133
(206) 365-4492
✔ PECOS✔ Accepts Medicare6.5 mi
David Lee, MD
Gastroenterology
NPI 1003844622
11800 NE 128TH ST SUITE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Kimberly Lavender, ARNP
Nurse Practitioner
NPI 1619261930
11800 NE 128TH ST SUITE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
William Michael, APRN
Nurse Practitioner
NPI 1689521254
11800 NE 128TH ST STE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Jennifer Seaman, ARNP
Nurse Practitioner
NPI 1013724244
11800 NE 128TH ST STE 100
Kirkland, WA 98034
(425) 899-4500
✔ PECOS✔ Accepts Medicare9.1 mi
Steven Kane, ARNP
Nurse Practitioner
NPI 1831727361
5350 TALLMAN AVE NW STE 520
Seattle, WA 98107
(206) 215-4250
✔ PECOS✔ Accepts Medicare9.6 mi
See all 83 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Puget Sound Gastroenterology, PLLC's NPI number?

The NPI number for Puget Sound Gastroenterology, PLLC is 1033132956. It was assigned to this organization in the NPPES registry on July 25, 2006. The provider is doing business as Puget Sound Gastroenterology at Edmonds.

Where is Puget Sound Gastroenterology, PLLC located?

Puget Sound Gastroenterology, PLLC is located at 21600 Hwy 99 Suite 260, Edmonds, WA 98026. The listed phone number is (425) 774-2650.

What is Puget Sound Gastroenterology, PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Puget Sound Gastroenterology, PLLC enrolled in Medicare?

Yes. Puget Sound Gastroenterology, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Puget Sound Gastroenterology, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 83 clinicians in 4 Medicare specialties reassign their Medicare billing to Puget Sound Gastroenterology, PLLC. A 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 the clinician's services. The largest specialties are Gastroenterology (48), Nurse Practitioner (27) and Pathology (6). Of these, 7 practice at this address and 29 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Puget Sound Gastroenterology, PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Puget Sound Gastroenterology, PLLC 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 Puget Sound Gastroenterology, PLLC was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.