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DR. TOM LE NGUYEN DO
NPI 1598729980
Family Medicine in Rosemead, CA

Active since April 13, 2006PECOS Enrolled
9146 E. VALLEY BLVD SUITE A, ROSEMEAD, CA 91770(626) 571-6908(626) 571-7732 Get Directions Write a Review

NPPES record last updated: September 1, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Tom Le Nguyen Do NPPES

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

DR. TOM LE NGUYEN DO (NPI 1598729980) is an individual family medicine provider in Rosemead, California, licensed in California (20A9384) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598729980
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. TOM LE NGUYENCredential: DO
Location Address9146 E. VALLEY BLVD SUITE ARosemead, CA 91770-1920
Mailing Address9146 E. Valley Blvd Suite ARosemead, CA 91770-1920 · (626) 571-6908 · Fax (626) 571-7732
Phone(626) 571-6908
Fax(626) 571-7732
Sole ProprietorYes
Enumeration DateApril 13, 2006
Last NPPES UpdateSeptember 1, 2009
✔ NPI 1598729980 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A9384
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
9146 E. VALLEY BLVD SUITE A, Rosemead, CA 91770
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Other Identifiers 4

Medicare PINBN129XCA
Other20A9384CA · License
Medicare PINBN129WCA
Medicare PINBN129VCA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tom Le Nguyen Do 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 Reassignments

4

Medicare enrollment records show Tom Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gem Medical Group Corporation
3.2 mi
Emergency Medicine
525 N GARFIELD AVE
Monterey Park, CA 91754
  • Reassigned Medicare billing, California enrollment
  • 80 clinicians in this Medicare group
NPI 1689386815 (626) 573-2222
Golden West Emergency Medical Associates, Inc
4.5 mi
Emergency Medicine
900 S ATLANTIC BLVD
Monterey Park, CA 91754
  • Reassigned Medicare billing, California enrollment
  • 50 clinicians in this Medicare group
NPI 1053680298 (626) 457-7450
East Valley Emergency Medical Associates, Inc
9.8 mi
Emergency Medicine
9080 COLIMA RD
Whittier, CA 90605
  • Reassigned Medicare billing, California enrollment
  • 61 clinicians in this Medicare group
NPI 1346287430 (562) 907-1565
Chase Dennis Emergency Medical Group Inc
397 mi
Emergency Medicine
1165 MONTGOMERY DR
Santa Rosa, CA 95405
  • Reassigned Medicare billing, California enrollment
  • 42 clinicians in this Medicare group
NPI 1033152350 (925) 924-1600

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
43 services43 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
38 services38 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
17 services17 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91770 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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 Tom Nguyen's NPI number?

The NPI number for Tom Nguyen is 1598729980. It was assigned to this individual provider in the NPPES registry on April 13, 2006.

Where is Tom Nguyen located?

Tom Nguyen practices at 9146 E. Valley Blvd Suite A, Rosemead, CA 91770. The listed phone number is (626) 571-6908.

What is Tom Nguyen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Tom Nguyen enrolled in Medicare?

Yes. Tom Nguyen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tom Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tom Nguyen reassigns Medicare benefits to 4 organizations: Gem Medical Group Corporation (Monterey Park, CA), Golden West Emergency Medical Associates, Inc (Monterey Park, CA), East Valley Emergency Medical Associates, Inc (Whittier, CA) and Chase Dennis Emergency Medical Group Inc (Santa Rosa, CA). Each 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 Tom 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 Tom Nguyen was last updated on September 1, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.