DR. GUILAN CHEN M.D.
NPI 1437351798
Pathology - Anatomic Pathology & Clinical Pathology in Redwood City, CA

Q: What is Guilan Chen's NPI number?

The NPI number for Guilan Chen is 1437351798. It was assigned to this individual provider in the NPPES registry on May 31, 2007.

Q: What is Guilan Chen's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for Guilan Chen was last updated on June 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since May 31, 2007PECOS Enrolled

901 MARSHALL ST, REDWOOD CITY, CA 94063(650) 299-2414 Get Directions Write a Review

NPPES record last updated: June 19, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 19, 2024, Apr 24, 2018 (2 updates tracked since 2018).

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About Dr. Guilan Chen M.d. NPPES

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

DR. GUILAN CHEN M.D. (NPI 1437351798) is an individual anatomic pathology & clinical pathology provider in Redwood City, California, licensed in California (C192010) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437351798

Entity TypeIndividualFemale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. GUILAN CHENCredential: M.D.

Location Address901 MARSHALL STRedwood City, CA 94063-2026

Mailing Address901 Marshall StRedwood City, CA 94063-2026 · (650) 299-2414

Phone(650) 299-2414

Sole ProprietorNo

Enumeration DateMay 31, 2007

Last NPPES UpdateJune 19, 20242 updates tracked since enumeration

NPPES CertifiedJune 19, 2024

✔ NPI 1437351798 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

Licenses✔ Licensed in CA · C192010✔ Licensed in MO · 2010005430

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 2006015664 (MO)

901 MARSHALL ST, Redwood City, CA 94063

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Guilan Chen 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 Guilan Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

0.1 mi

Internal Medicine

1190 VETERANS BLVD
Redwood City, CA 94063

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1639252604 (650) 299-2000

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 94063 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KEVIN SEIGAL

Respiratory Therapist, Registered

901 MARSHALL ST
REDWOOD CITY, CA 94063

San Mateo County (650) 299-2270

KAREN SHENG CNS

Clinical Nurse Specialist (Gerontology)

901 MARSHALL ST
REDWOOD CITY, CA 94063

San Mateo County (650) 299-3536

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 Guilan Chen's NPI number?

The NPI number for Guilan Chen is 1437351798. It was assigned to this individual provider in the NPPES registry on May 31, 2007.

Where is Guilan Chen located?

Guilan Chen practices at 901 Marshall St, Redwood City, CA 94063. The listed phone number is (650) 299-2414.

What is Guilan Chen's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Guilan Chen enrolled in Medicare?

Yes. Guilan Chen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Guilan Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guilan Chen reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, CA). 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 Guilan Chen'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 Guilan Chen was last updated on June 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.