DR. DALLIS QUANG NGO D.O., M.S.
NPI 1174055149
Internal Medicine - Pulmonary Disease in Pomona, CA

Q: What is Dallis Ngo's NPI number?

The NPI number for Dallis Ngo is 1174055149. It was assigned to this individual provider in the NPPES registry on March 29, 2017.

Q: What is Dallis Ngo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Dallis Ngo was last updated on October 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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 March 29, 2017PECOS EnrolledAccepts Medicare Assignment

81.38/100

CMS Quality Rating

1940 N ORANGE GROVE AVE STE A, POMONA, CA 91767(909) 865-6900(909) 865-6300 Get Directions Write a Review

NPPES record last updated: October 25, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 17, 2023, Jul 7, 2022, May 18, 2022 and 4 more (7 updates tracked since 2017).

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About Dr. Dallis Quang Ngo D.o., M.s. NPPES

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

DR. DALLIS QUANG NGO D.O., M.S. (NPI 1174055149) is an individual pulmonary disease provider in Pomona, California, licensed in California (20A16871) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1174055149

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. DALLIS QUANG NGOCredential: D.O., M.S.

Location Address1940 N ORANGE GROVE AVE STE APomona, CA 91767-3002

Mailing Address840 Towne Center DrPomona, CA 91767-5900 · (909) 398-1550

Phone(909) 865-6900

Fax(909) 865-6300

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateMarch 29, 2017

Last NPPES UpdateOctober 25, 20247 updates tracked since enumeration

NPPES CertifiedJuly 17, 2023

✔ NPI 1174055149 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in CA · 20A16871

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 2022013108 (MO)

1940 N ORANGE GROVE AVE STE A, Pomona, CA 91767

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Secondary Practice Locations 2

Location 1240 Easton AveNew Brunswick, NJ 08901-1723 · Phone (000) 000-0000

Location 2625 S New Ballas Rd Ste 7020Saint Louis, MO 63141-8218 · Phone (314) 251-6486 · Fax (314) 251-4155

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. Dallis Quang Ngo D.o., M.s. 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 ID3072990886

PECOS Enrollment IDI20230831003254

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 Dallis Ngo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chaparral Medical Group, Inc.

Same address

Pulmonary Disease

1940 N ORANGE GROVE AVE STE A&B
Pomona, CA 91767

Reassigned Medicare billing, California enrollment
Also billed through NPI 1750634325 (California)
114 clinicians in this Medicare group

NPI 1609292051 (909) 865-6900

Southern California Permanente Medical Group

4.1 mi

Clinical Medical Laboratory

13000 PEYTON DR
Chino Hills, CA 91709

Reassigned Medicare billing, California enrollment
5,228 clinicians in this Medicare group

NPI 1396287082 (888) 750-0036

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 12

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.

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.

496 services189 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.

339 services121 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

69 services22 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.

47 services34 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.

40 services40 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

32 services32 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.

22 services17 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

16 services16 patients

Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556

This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.

15 services14 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

15 services14 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

14 services14 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91767 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.38/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

48.43

Promoting Interoperability

Improvement Activities

Cost

81.11

Other Providers at the Same Location NPPES 3

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

DR. RAKESH SINHA M.B.B.S., M.D.

Internal Medicine (Pulmonary Disease)

1940 N ORANGE GROVE AVE STE A
POMONA, CA 91767

Los Angeles County (909) 865-6900

DR. DERRICK RAPTIS M.D.

Internal Medicine (Pulmonary Disease)

1940 N ORANGE GROVE AVE STE A
POMONA, CA 91767

Los Angeles County (909) 865-6900

ANTHONY GAN

Internal Medicine (Pulmonary Disease)

1940 N ORANGE GROVE AVE STE A
POMONA, CA 91767

Los Angeles County (909) 865-6900

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 Dallis Ngo's NPI number?

The NPI number for Dallis Ngo is 1174055149. It was assigned to this individual provider in the NPPES registry on March 29, 2017.

Where is Dallis Ngo located?

Dallis Ngo practices at 1940 N Orange Grove Ave Ste A, Pomona, CA 91767. The listed phone number is (909) 865-6900.

What is Dallis Ngo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Dallis Ngo enrolled in Medicare?

Yes. Dallis Ngo 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 Dallis Ngo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dallis Ngo reassigns Medicare benefits to 2 organizations: Chaparral Medical Group, Inc. (Pomona, CA) and Southern California Permanente Medical Group (Chino Hills, 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 Dallis Ngo'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 Dallis Ngo was last updated on October 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.