CATHERINE VAN NGUYEN-LOH DO
NPI 1558828848
Family Medicine in Fountain Valley, CA

Q: What is Catherine Nguyen-loh's NPI number?

The NPI number for Catherine Nguyen-loh is 1558828848. It was assigned to this individual provider in the NPPES registry on February 22, 2019.

Q: What is Catherine Nguyen-loh's specialty?

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

Active since February 22, 2019PECOS EnrolledAccepts Medicare Assignment

8970 WARNER AVE, FOUNTAIN VALLEY, CA 92708(714) 477-8400(714) 477-8401 Get Directions Write a Review

NPPES record last updated: March 5, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 5, 2024, Feb 22, 2019 (2 updates tracked since 2019).

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About Catherine Van Nguyen-loh Do NPPES

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

CATHERINE VAN NGUYEN-LOH DO (NPI 1558828848) is an individual family medicine provider in Fountain Valley, California, licensed in California (20A20201) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1558828848

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameCATHERINE VAN NGUYEN-LOHCredential: DO

Location Address8970 WARNER AVEFountain Valley, CA 92708-3211

Mailing Address8970 Warner AveFountain Valley, CA 92708-3211 · (714) 477-8400 · Fax (714) 477-8401

Phone(714) 477-8400

Fax(714) 477-8401

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateFebruary 22, 2019

Last NPPES UpdateMarch 5, 20242 updates tracked since enumeration

NPPES CertifiedMarch 5, 2024

✔ NPI 1558828848 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 · 20A20201

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.

8970 WARNER AVE, Fountain Valley, CA 92708

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Catherine Van Nguyen-loh Do 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 ID7315302569

PECOS Enrollment IDI20230424000964

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.

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 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.

135 services75 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.

67 services57 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

20 services20 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

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 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.

Patient Reviews User submitted 2

Reviews are submitted by site visitors and approved by a human moderator before publication.

5.0based on 2 reviews

Review by Happy ***** May 4, 2025

5/5

This doctor is amazing. She genuinely cares about you as a patient. She is friendly and wants to get you well. She is also very honest. She is one of the best doctors I have had even counting my childhood doctors. She explains everything so I can understand. I never feel like I’m being rushed or ignored. I’d be sad if I couldn’t see this doctor. I hope she always takes my insurance.

Provider 5/5 Office Staff 5/5

Review by Just ***** September 24, 2024

5/5

This doctor is great. She really takes the time to help you. She is very knowledgeable too! I’m glad she is my PCP.

Provider 5/5 Office Staff 5/5

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Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KEVIN HOWARD SCHACHTER MD

Family Medicine