1. Home
  2. Directory
  3. California
  4. Huntington Beach
  5. Internal Medicine
  6. NPI Profile

DR. AN DUY NGUYEN M.D.
NPI 1023011384
Internal Medicine - Hematology & Oncology in Huntington Beach, CA

Active since May 31, 2005PECOS EnrolledAccepts Medicare Assignment
19582 BEACH BLVD, STE 212, HUNTINGTON BEACH, CA 92648(714) 252-9415(714) 963-8407 Get Directions Write a Review

NPPES record last updated: January 9, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. An Duy Nguyen M.d. NPPES

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

DR. AN DUY NGUYEN M.D. (NPI 1023011384) is an individual hematology & oncology provider in Huntington Beach, California, licensed in California (A78574) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2001).

NPPES Registry Identity

NPI1023011384
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. AN DUY NGUYENCredential: M.D.
Location Address19582 BEACH BLVD, STE 212Huntington Beach, CA 92648-2996
Mailing Address1043 Elm Avenue, Ste 104Long Beach, CA 90813-3244 · (562) 590-0345 · Fax (562) 437-8139
Phone(714) 252-9415
Fax(714) 963-8407
Sole ProprietorNo
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2001
Enumeration DateMay 31, 2005
Last NPPES UpdateJanuary 9, 2012
✔ NPI 1023011384 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A78574
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedSpecialistTaxonomy 174400000X · License A78574 (CA)
19582 BEACH BLVD, Huntington Beach, CA 92648
Open in Google Maps ↗

Other Identifiers 2

Medicaid00A785740CA
Medicare UPINI05738CA

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

Dr. An Duy 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 ID5294710547
PECOS Enrollment IDI20040621001522
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 An Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Usc Care Medical Group, Inc
29 mi
General Practice
1520 SAN PABLO ST
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 2,445 clinicians in this Medicare group
NPI 1902846306 (323) 442-5955

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 5

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
812 services209 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
709 services83 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
270 services155 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
73 services43 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92648 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
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.

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.

THE CANCER TREATMENT CENTER OF ORANGE COUNTY MEDICAL GROUP INC
Internal Medicine (Hematology & Oncology)
19582 BEACH BLVD, SUITE 270
HUNTINGTON BEACH, CA 92648
Orange County (714) 378-4920
PUNDARI K CHEMITIGANTI M.D.
Internal Medicine (Gastroenterology)
19582 BEACH BLVD, STE 102
HUNTINGTON BEACH, CA 92648
Orange County (714) 843-6789
CHRISTOPHER JOHNSTON DPT
Physical Therapist
19582 BEACH BLVD, SUITE 130
HUNTINGTON BEACH, CA 92648
Orange County (714) 841-6162
CHRISTINE T THAI M.D.
Internal Medicine (Rheumatology)
19582 BEACH BLVD, STE 320
HUNTINGTON BEACH, CA 92648
Orange County (714) 378-2440
PUNDARI C GANTI M D INC
Internal Medicine (Gastroenterology)
19582 BEACH BLVD, STE. # 102
HUNTINGTON BEACH, CA 92648
Orange County (714) 843-6789
HUNTINGTON BEACH PHYSICAL THERAPY SPECIALIST A PROFESSIONAL CORP
Physical Therapist
19582 BEACH BLVD, SUITE 130
HUNTINGTON BEACH, CA 92648
Orange County (714) 841-6162
ADVANCED DERMATOLOGY CARE CENTER INC
Dermatology
19582 BEACH BLVD, SUITE 217
HUNTINGTON BEACH, CA 92648
Orange County (949) 650-1244
MR. MATTHEW KENT CHANDLER PA-C
Physician Assistant (Medical)
19582 BEACH BLVD
HUNTINGTON BEACH, CA 92648
Orange County (714) 378-2403

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 An Nguyen's NPI number?

The NPI number for An Nguyen is 1023011384. It was assigned to this individual provider in the NPPES registry on May 31, 2005.

Where is An Nguyen located?

An Nguyen practices at 19582 Beach Blvd Ste 212, Huntington Beach, CA 92648. The listed phone number is (714) 252-9415.

What is An Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is An Nguyen enrolled in Medicare?

Yes. An 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 An Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), An Nguyen reassigns Medicare benefits to Usc Care Medical Group, Inc (Los Angeles, 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 An 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 An Nguyen was last updated on January 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.