1. Home
  2. Directory
  3. California
  4. Corona
  5. Pathology
  6. NPI Profile

DR. MAI GU MD
NPI 1821048257
Pathology - Anatomic Pathology & Clinical Pathology in Corona, CA

Active since May 10, 2006PECOS EnrolledAccepts Medicare Assignment
0/100
CMS Quality Rating
1810 FULLERTON AVE STE 102, CORONA, CA 92881(951) 808-8863(951) 808-0550 Get Directions Write a Review

NPPES record last updated: August 5, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Mai Gu Md NPPES

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

DR. MAI GU MD (NPI 1821048257) is an individual anatomic pathology & clinical pathology provider in Corona, California, licensed in California (A68810) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1988).

NPPES Registry Identity

NPI1821048257
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. MAI GUCredential: MD
Location Address1810 FULLERTON AVE STE 102Corona, CA 92881-3109
Mailing Address1810 Fullerton Ave Ste 102Corona, CA 92881-3109 · (951) 808-8863 · Fax (951) 808-0550
Phone(951) 808-8863
Fax(951) 808-0550
Sole ProprietorYes
Medical School CMSOtherGraduated 1988
Enumeration DateMay 10, 2006
Last NPPES UpdateAugust 5, 2020
NPPES CertifiedAugust 5, 2020
✔ NPI 1821048257 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A68810
Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

1810 FULLERTON AVE STE 102, Corona, CA 92881
Open in Google Maps ↗

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

Dr. Mai Gu 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 ID5991752982
PECOS Enrollment IDI20080212000517
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 8

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.

Evaluation of fine needle aspirate with interpretation and report 88173
This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.
399 services240 patients
Evaluation of fine needle aspirate 88172
Evaluation of fine needle aspirate is a diagnostic procedure where a thin needle is used to collect cells from a lump or mass. This sample is then examined under a microscope to determine the nature of the lump, whether it's benign (non-cancerous) or malignant (cancerous).
397 services241 patients
Fine needle aspiration biopsy using ultrasound guidance, first growth 10005
Fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is inserted into a growth to extract a small sample. Ultrasound helps accurately locate the growth. This sample is then analyzed to determine the nature of the growth.
244 services243 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
208 services208 patients
Fine needle aspiration biopsy using ultrasound guidance, each additional growth 10006
A fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is used to collect cells from a growth. Ultrasound helps accurately locate the growth. If there's more than one growth, each one is biopsied separately.
157 services110 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.
39 services37 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92881 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

0/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0

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 Mai Gu's NPI number?

The NPI number for Mai Gu is 1821048257. It was assigned to this individual provider in the NPPES registry on May 10, 2006.

Where is Mai Gu located?

Mai Gu practices at 1810 Fullerton Ave Ste 102, Corona, CA 92881. The listed phone number is (951) 808-8863.

What is Mai Gu's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Mai Gu enrolled in Medicare?

Yes. Mai Gu 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.

When was this NPI record last updated?

The NPPES record for Mai Gu was last updated on August 5, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.