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PORTLAND DIABETES & ENDOCRINOLOGY
NPI 1942419569
Internal Medicine - Endocrinology, Diabetes & Metabolism in Portland, OR

Active since May 21, 2007CLIA 38D2043330 · Accreditation
9135 SW BARNES RD STE 985, PORTLAND, OR 97225(503) 297-3336(503) 297-3338 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 9, 2026, Nov 26, 2025, Sep 15, 2025 and 4 more (7 updates tracked since 2018).

About Portland Diabetes & Endocrinology NPPES

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

PORTLAND DIABETES & ENDOCRINOLOGY (NPI 1942419569), doing business as Portland Diabetes & Endocrinology Center, P C, is a healthcare organization registered as an endocrinology, diabetes & metabolism in Portland, Oregon and active in the NPI registry since May 2007. The organization holds an CLIA Accreditation certificate valid through June 25, 2028 and lists Richard W Bergstrom, President, as its authorized official.

NPPES Registry Identity

NPI1942419569
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NamePORTLAND DIABETES & ENDOCRINOLOGY
Location Address9135 SW BARNES RD STE 985Portland, OR 97225-6699
Mailing Address9135 Sw Barnes Rd Ste 985Portland, OR 97225-6699 · (503) 297-3336 · Fax (503) 297-3338
Phone(503) 297-3336
Fax(503) 297-3338
Organization SubpartNo
Authorized OfficialRichard W BergstromPresident · (503) 274-4884
Enumeration DateMay 21, 2007
Last NPPES UpdateJuly 9, 20267 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1942419569 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedDurable Medical Equipment & Medical SuppliesTaxonomy 332B00000X
9135 SW BARNES RD STE 985, Portland, OR 97225
Open in Google Maps ↗

Other Names 1

Doing Business AsPortland Diabetes & Endocrinology Center, P C

Other Identifiers 1

Medicaid151316OR

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and more.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)

Portland Diabetes & Endocrinology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

11

Medicare enrollment records show 11 clinicians reassign Medicare billing to Portland Diabetes & Endocrinology, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 10 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Endocrinology6
Nurse Practitioner3
Internal Medicine2

Clinicians, nearest first (11)

Richard Bergstrom, MD
Endocrinology
NPI 1326196841
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
Scott Grady, MD
Endocrinology
NPI 1396893897
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
Wiley Harkens, DO
Endocrinology
NPI 1588285522
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
Jennifer Murdoch, ANP
Nurse Practitioner
NPI 1891843397
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
James Neifing, MD
Endocrinology
NPI 1437207941
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
Amy Shah, DO
Internal Medicine
NPI 1659733202
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts MedicareSame address
Amy Carter, F.N.P.
Nurse Practitioner
NPI 1215302336
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts Medicare0.1 mi
Radhika Chugh, M.D.
Endocrinology
NPI 1427398247
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts Medicare0.1 mi
Fawn Wolf, M.D.
Internal Medicine
NPI 1689636557
9155 SW BERNES RD. SUITE 638
Portland, OR 97225
(503) 216-7000
✔ PECOS✔ Accepts Medicare0.1 mi
Laurel Zuberi, NP
Nurse Practitioner
NPI 1457395311
9135 SW BARNES RD STE 985
Portland, OR 97225
(503) 297-3336
✔ PECOS✔ Accepts Medicare0.1 mi
Olga Senashova, MD
Endocrinology
NPI 1578730438
1501 TROUSDALE DR
Burlingame, CA 94010
(650) 652-8282
✔ PECOS547 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 38D2043330

Portland Diabetes And Endocrinology Center · Portland, OR
Active · expires Jun 25, 2028
CLIA Number38D2043330
Laboratory TypePhysician Office
Certificate Effective DateJune 26, 2026
Certificate Expiration DateJune 25, 2028
Laboratory DirectorDr. Scott P. Grady
Laboratory Phone(503) 297-3336
Laboratory LocationPortland Diabetes And Endocrinology Center9135 SW Barnes Rd Suite 985, Portland, OR 97225
CLIA data matches this NPI record on: Address Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 Portland Diabetes & Endocrinology's NPI number?

The NPI number for Portland Diabetes & Endocrinology is 1942419569. It was assigned to this organization in the NPPES registry on May 21, 2007. The provider is doing business as Portland Diabetes & Endocrinology Center, P C.

Where is Portland Diabetes & Endocrinology located?

Portland Diabetes & Endocrinology is located at 9135 SW Barnes Rd Ste 985, Portland, OR 97225. The listed phone number is (503) 297-3336.

What is Portland Diabetes & Endocrinology's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Portland Diabetes & Endocrinology enrolled in Medicare?

Yes. Portland Diabetes & Endocrinology is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Portland Diabetes & Endocrinology?

According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians in 3 Medicare specialties reassign their Medicare billing to Portland Diabetes & Endocrinology. 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 Endocrinology (6), Nurse Practitioner (3) and Internal Medicine (2). Of these, 6 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Portland Diabetes & Endocrinology hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 38D2043330) is associated with this NPI, valid through June 25, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Portland Diabetes & Endocrinology accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and Regence BlueCross BlueShield of Oregon list Portland Diabetes & Endocrinology 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 Portland Diabetes & Endocrinology was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.