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DR. ALEXIE KHANH NGUYEN M.D.
NPI 1659367613
Internal Medicine in Encinitas, CA

Active since September 26, 2005PECOS Enrolled
354 SANTE FE DRIVE, ENCINITAS, CA 92024(760) 230-2251 Get Directions Write a Review

NPPES record last updated: August 25, 2014. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Alexie Khanh Nguyen M.d. NPPES

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

DR. ALEXIE KHANH NGUYEN M.D. (NPI 1659367613) is an individual internal medicine provider in Encinitas, California, licensed in California (A83318) and active in the NPI registry since September 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659367613
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. ALEXIE KHANH NGUYENCredential: M.D.
Location Address354 SANTE FE DRIVEEncinitas, CA 92024
Mailing AddressPo Box 231189Encinitas, CA 92023-1189 · (760) 230-2251
Phone(760) 230-2251
Sole ProprietorNo
Enumeration DateSeptember 26, 2005
Last NPPES UpdateAugust 25, 2014
✔ NPI 1659367613 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A83318
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
354 SANTE FE DRIVE, Encinitas, CA 92024
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Other Identifiers 2

Medicare UPINI09752CA
Medicare PINWA83318ACA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexie Khanh Nguyen 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 Reassignments

2

Medicare enrollment records show Alexie Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North County Inpatient Medical Alliance, A Medical Group, Inc
Same address
Hospitalist
354 SANTA FE DR
Encinitas, CA 92024
  • Reassigned Medicare billing, California enrollment
  • 92 clinicians in this Medicare group
NPI 1932108115 (760) 230-2251
Enlightened Healthcare Alliance Medical Corporation
0.9 mi
Internal Medicine
662 ENCINITAS BLVD STE 220
Encinitas, CA 92024
  • Reassigned Medicare billing, California enrollment
  • 70 clinicians in this Medicare group
NPI 1710458245 (833) 446-6363

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 92024 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
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 Alexie Nguyen's NPI number?

The NPI number for Alexie Nguyen is 1659367613. It was assigned to this individual provider in the NPPES registry on September 26, 2005.

Where is Alexie Nguyen located?

Alexie Nguyen practices at 354 Sante Fe Drive, Encinitas, CA 92024. The listed phone number is (760) 230-2251.

What is Alexie Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Alexie Nguyen enrolled in Medicare?

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

Which organizations bill Medicare for Alexie Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexie Nguyen reassigns Medicare benefits to 2 organizations: North County Inpatient Medical Alliance, A Medical Group, Inc (Encinitas, CA) and Enlightened Healthcare Alliance Medical Corporation (Encinitas, 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 Alexie 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 Alexie Nguyen was last updated on August 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.