DR. THUY DUONG MAI D.O.
NPI 1154669299
Obstetrics & Gynecology in Colton, CA

Q: What is Thuy Mai's NPI number?

The NPI number for Thuy Mai is 1154669299. It was assigned to this individual provider in the NPPES registry on January 24, 2013.

Q: What is Thuy Mai's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Thuy Mai was last updated on October 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 January 24, 2013PECOS Enrolled

400 N PEPPER AVE, COLTON, CA 92324(909) 580-3470 Get Directions Write a Review

NPPES record last updated: October 27, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Thuy Duong Mai D.o. NPPES

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

DR. THUY DUONG MAI D.O. (NPI 1154669299) is an individual obstetrics & gynecology provider in Colton, California, licensed in California (20A11681) and active in the NPI registry since January 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154669299

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. THUY DUONG MAICredential: D.O.

Location Address400 N PEPPER AVEColton, CA 92324-1801

Mailing Address400 N Pepper AveColton, CA 92324-1801 · (714) 858-1982

Phone(909) 580-3470

Sole ProprietorYes

Enumeration DateJanuary 24, 2013

Last NPPES UpdateOctober 27, 2021

NPPES CertifiedOctober 27, 2021

✔ NPI 1154669299 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · 20A11681

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

400 N PEPPER AVE, Colton, CA 92324

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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. Thuy Duong Mai D.o. 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 Thuy Mai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group

4.5 mi

Health Maintenance Organization

9961 SIERRA AVE
Fontana, CA 92335

Reassigned Medicare billing, California enrollment
5,228 clinicians in this Medicare group

NPI 1689606196 (909) 427-3910

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 92324 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

$136.04 typical visit price

range $59.60 – $179.42

Typical copayment $34.01 (range $14.90 – $44.85)

Most-billed visit code 99204

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

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.

CATHERINE J CALHOUN

Licensed Psychiatric Technician