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GLORIA HOAIHUONG NGUYEN M.D.
NPI 1609166149
Dermatology in Redwood City, CA

Active since April 18, 2011PECOS EnrolledAccepts Medicare Assignment
450 BROADWAY ST, PAVILION B, 4TH FLOOR, REDWOOD CITY, CA 94063(650) 725-6638(650) 721-3476 Get Directions Write a Review

NPPES record last updated: December 16, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gloria Hoaihuong Nguyen M.d. NPPES

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

GLORIA HOAIHUONG NGUYEN M.D. (NPI 1609166149) is an individual dermatology provider in Redwood City, California, licensed in California (A143325) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2011).

NPPES Registry Identity

NPI1609166149
Entity TypeIndividualFemale
Primary Taxonomy207N00000X
Provider Legal NameGLORIA HOAIHUONG NGUYENCredential: M.D.
Location Address450 BROADWAY ST, PAVILION B, 4TH FLOORRedwood City, CA 94063-3132
Mailing Address450 Broadway St, Pavilion B, 4th FloorRedwood City, CA 94063-3132 · (650) 725-6638 · Fax (650) 721-3476
Phone(650) 725-6638
Fax(650) 721-3476
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 2011
Enumeration DateApril 18, 2011
Last NPPES UpdateDecember 16, 2021
✔ NPI 1609166149 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License✔ Licensed in CA · A143325
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
450 BROADWAY 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 and accepts Medicare assignment

Gloria Hoaihuong Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6901115393
PECOS Enrollment IDI20160919001286
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 Gloria Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
1.1 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
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.

ALEXANDER CASPARY-ISAR
Physical Therapist (Orthopedic)
450 BROADWAY ST
REDWOOD CITY, CA 94063
San Mateo County (850) 766-7720
DR. CHRISTOPHER HARLOW LADD DO
Anesthesiology (Pain Medicine)
450 BROADWAY ST
REDWOOD CITY, CA 94063
San Mateo County (650) 723-6316
MRS. GLENDA LOUISE SWETMAN M.D.
Dermatology
450 BROADWAY ST, PAVILION C, 2ND FLOOR, MC 5334
REDWOOD CITY, CA 94063
San Mateo County (650) 721-7194
AMY XIN YIN M.D.
Student in an Organized Health Care Education/Training Program
450 BROADWAY ST
REDWOOD CITY, CA 94063
San Mateo County (650) 725-6134
SARAH A SILVERMAN PSY.D.
Psychologist (Health)
450 BROADWAY ST, PAVILION B, 2ND FLOOR
REDWOOD CITY, CA 94063
San Mateo County (650) 498-3931
BEATA JANE VAYNGORTIN MD
Student in an Organized Health Care Education/Training Program
450 BROADWAY ST
REDWOOD CITY, CA 94063
San Mateo County (650) 721-7669
TANIA MAE MENDOZA GOLO-ATKIN BSN, RN, AMB-BC
Registered Nurse (Orthopedic)
450 BROADWAY ST
REDWOOD CITY, CA 94063
San Mateo County (650) 723-5643
MISS KATE LAUREN KEVORKEN PT, DPT
Physical Therapist (Orthopedic)
450 BROADWAY ST, PAVILION B31, 3RD FLOOR
REDWOOD CITY, CA 94063
San Mateo County (650) 725-5106

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 Gloria Nguyen's NPI number?

The NPI number for Gloria Nguyen is 1609166149. It was assigned to this individual provider in the NPPES registry on April 18, 2011.

Where is Gloria Nguyen located?

Gloria Nguyen practices at 450 Broadway St Pavilion B, 4th Floor, Redwood City, CA 94063. The listed phone number is (650) 725-6638.

What is Gloria Nguyen's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Gloria Nguyen enrolled in Medicare?

Yes. Gloria Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Gloria Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gloria Nguyen 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 Gloria Nguyen'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 Gloria Nguyen was last updated on December 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.