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DR. GILLIAN LAM M.D.
NPI 1306166038
Pediatrics - Pediatric Gastroenterology in Portland, OR

Active since June 04, 2010PECOS Enrolled
700 SW CAMPUS DR, 7TH FLOOR, PORTLAND, OR 97239(503) 346-0640 Get Directions Write a Review

NPPES record last updated: April 9, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 3, 2017, Feb 17, 2017 (2 updates tracked since 2017).

About Dr. Gillian Lam M.d. NPPES

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

DR. GILLIAN LAM M.D. (NPI 1306166038) is an individual pediatric gastroenterology provider in Portland, Oregon, licensed in Oregon (177049) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306166038
Entity TypeIndividualFemale
Primary Taxonomy2080P0206X
Provider Legal NameDR. GILLIAN LAMCredential: M.D.
Location Address700 SW CAMPUS DR, 7TH FLOORPortland, OR 97239-3107
Mailing Address707 Sw Gaines St, Cdrcp, Peds Gi, Office 4212Portland, OR 97239-2403 · (503) 494-1078
Phone(503) 346-0640
Sole ProprietorNo
Enumeration DateJune 4, 2010
Last NPPES UpdateApril 9, 20172 updates tracked since enumeration
✔ NPI 1306166038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
Licenses✔ Licensed in OR · 177049✔ Licensed in AR · E-10228
Definition
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.
700 SW CAMPUS DR, Portland, OR 97239
Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Gillian Tam M.d.

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc., PacificSource Health Plans, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gillian Lam M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Gillian Lam reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Professional Services
Same address
General Practice
3181 SW SAM JACKSON PARK RD
Portland, OR 97239
  • Reassigned Medicare billing, Oregon enrollment
  • 2,212 clinicians in this Medicare group
NPI 1376709535 (503) 494-8311

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 97239 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MRS. APRIL D MITSCH RD
Dietitian, Registered
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 494-8362
ALEXIS L FONTAINE
Urology (Pediatric Urology)
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 346-0640
ASHLEY AMBER LY OTD, OTD/L
Occupational Therapist (Pediatrics)
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 406-0640
JORGE RIVERA MD
Student in an Organized Health Care Education/Training Program
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (971) 284-8337
MICHELLE FALCONE MD
Student in an Organized Health Care Education/Training Program
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 418-5700
ISATOU SYLLA
Community Health Worker
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 418-5700
DR. KATHERINE E STRIBLING DPT
Physical Therapist
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 418-5458
NICOLE MARIE FASSIOTTO
Physical Therapist
700 SW CAMPUS DR
PORTLAND, OR 97239
Multnomah County (503) 494-3151

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 Gillian Lam's NPI number?

The NPI number for Gillian Lam is 1306166038. It was assigned to this individual provider in the NPPES registry on June 4, 2010. The provider is also known as Dr. Gillian Tam M.D..

Where is Gillian Lam located?

Gillian Lam practices at 700 SW Campus Dr 7th Floor, Portland, OR 97239. The listed phone number is (503) 346-0640.

What is Gillian Lam's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Gillian Lam enrolled in Medicare?

Yes. Gillian Lam is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gillian Lam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Lam reassigns Medicare benefits to University Professional Services (Portland, OR). The 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 Gillian Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gillian Lam accept?

Health plans from Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan list Gillian Lam 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 Gillian Lam was last updated on April 9, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.