ANTHONY LOC NGUYEN MD
NPI 1295153575
Internal Medicine - Hematology & Oncology in La Jolla, CA

Q: What is Anthony Nguyen's NPI number?

The NPI number for Anthony Nguyen is 1295153575. It was assigned to this individual provider in the NPPES registry on April 2, 2014.

Q: What is Anthony Nguyen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Anthony Nguyen was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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 April 02, 2014PECOS EnrolledAccepts Medicare Assignment

3855 HEALTH SCIENCES DR, LA JOLLA, CA 92093(800) 926-8273(888) 539-8781 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 13, 2025, Mar 6, 2025, Nov 5, 2024 and 4 more (7 updates tracked since 2020).

On this page

About Anthony Loc Nguyen Md NPPES

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

ANTHONY LOC NGUYEN MD (NPI 1295153575) is an individual hematology & oncology provider in La Jolla, California, licensed in California (A140417) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Aurora Health Care Central Inc, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1295153575

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameANTHONY LOC NGUYENCredential: MD

Location Address3855 HEALTH SCIENCES DRLa Jolla, CA 92093-9000

Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273

Phone(800) 926-8273

Fax(888) 539-8781

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateApril 2, 2014

Last NPPES UpdateNovember 13, 20257 updates tracked since enumeration

NPPES CertifiedNovember 13, 2025

✔ NPI 1295153575 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in CA · A140417

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.

3855 HEALTH SCIENCES DR, La Jolla, CA 92093

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Secondary Practice Locations 2

Location 116950 Via TazonSan Diego, CA 92127-1607 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 2200 W Arbor DrSan Diego, CA 92103-9000 · Phone (800) 926-8273

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare), UnitedHealthcare.Insurance ›

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

Anthony Loc Nguyen Md 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 ID244662864

PECOS Enrollment IDI20211102001144, I20220419001030

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

Medicare enrollment records show Anthony Nguyen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of California

9.2 mi

Allergy & Immunology

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
1,051 clinicians in this Medicare group

NPI 1487772380 (800) 926-8273

Confermed Of California PC

64 mi

Internal Medicine

101 ACADEMY STE 100
Irvine, CA 92617

Reassigned Medicare billing, California enrollment
118 clinicians in this Medicare group

NPI 1316584709 (860) 323-0172

Healthcare Partners Affiliates Medical Group

68 mi

Addiction Medicine

14591 NEWPORT AVE
Tustin, CA 92780

Reassigned Medicare billing, California enrollment
2,052 clinicians in this Medicare group

NPI 1891981502 (714) 442-4864

Aurora Medical Group, Inc.

1,730 mi

Obstetrics & Gynecology

8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227

Reassigned Medicare billing, Wisconsin enrollment
4,609 clinicians in this Medicare group

NPI 1457592735 (414) 328-8650

Aurora Health Care Central, Inc.

1,755 mi

General Acute Care Hospital

3400 UNION AVE
Sheboygan, WI 53081

Reassigned Medicare billing, Wisconsin enrollment
34 clinicians in this Medicare group

NPI 1922053107 (920) 802-2100

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 13

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 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.

109 services62 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.

75 services48 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

48 services31 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

42 services30 patients

Infusion, normal saline solution, 250 cc J7050

An infusion of normal saline solution, 250 cc, involves administering a sterile saltwater solution into your body through a vein, usually in your arm. This helps to replenish fluids, maintain hydration, and balance electrolytes in your body.

42 services12 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

24 services11 patients

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.

23 services12 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

22 services17 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

19 services13 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

19 services18 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

14 services14 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

14 services12 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.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Aurora Health Care Central Inc

Acute Care Hospitals · Sheboygan, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520035

Location3400 Union AveSheboygan, WI 53081 · Sheboygan County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92093 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

$184.71 typical visit price

range $62.10 – $184.71

Typical copayment $46.17 (range $15.52 – $46.17)

Most-billed visit code 99205

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.

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.

THEODORE HOBART WELLING MD

Surgery

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (800) 926-8273

TANIA MARIE MAREK NP

Nurse Practitioner (Family)

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (800) 926-8273

ARCHANA AJMERA RN, MSN, APRN-BC

Nurse Practitioner

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (858) 822-6185

PAULA MICHELLE MESARWI MD

Internal Medicine (Hospice and Palliative Medicine)

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (858) 534-7079

DR. EVA HO PHARM.D.

Pharmacist

3855 HEALTH SCIENCES DR, RM1036 (MAIL CODE 0845)
LA JOLLA, CA 92093

San Diego County (858) 822-6088

DANIELA BRANCO

Student in an Organized Health Care Education/Training Program

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (920) 737-9398

JEREMY RICH M.D.

Psychiatry & Neurology (Neurology)

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (858) 822-6100

DR. ILA MAEWAL SAUNDERS PHARMD

Pharmacist (Oncology)

3855 HEALTH SCIENCES DR
LA JOLLA, CA 92093

San Diego County (858) 657-7000

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 Anthony Nguyen's NPI number?

The NPI number for Anthony Nguyen is 1295153575. It was assigned to this individual provider in the NPPES registry on April 2, 2014.

Where is Anthony Nguyen located?

Anthony Nguyen practices at 3855 Health Sciences Dr, La Jolla, CA 92093. The listed phone number is (800) 926-8273.

What is Anthony Nguyen's specialty?

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

Is Anthony Nguyen enrolled in Medicare?

Yes. Anthony 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 organizations bill Medicare for Anthony Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anthony Nguyen reassigns Medicare benefits to 5 organizations: Regents Of The University Of California (San Diego, CA), Confermed Of California PC (Irvine, CA), Healthcare Partners Affiliates Medical Group (Tustin, CA), Aurora Medical Group, Inc. (West Allis, WI) and Aurora Health Care Central, Inc. (Sheboygan, WI). 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 Anthony Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anthony Nguyen accept?

Health plans from CareSource (Common Ground Healthcare) and UnitedHealthcare list Anthony Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Anthony Nguyen affiliated with any hospitals?

According to CMS data, Anthony Nguyen is affiliated with Aurora Health Care Central Inc.

When was this NPI record last updated?

The NPPES record for Anthony Nguyen was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.