Catherine Bao Ngo, M.D.
Gastroenterology Physician · Laguna Hills, CA
Catherine Bao Ngo, M.D. is a gastroenterology physician with a practice address in Laguna Hills, California, and NPI 1558531129, issued on Mar 10, 2008. Check the license (California A103043, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Catherine Bao Ngo
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A103043 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24221 Calle DE LA Louisa, Laguna Hills, CA 92653
- Phone
- (949) 770-7163
- Enumerated
- Mar 10, 2008
- Record last updated
- Oct 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (949) 465-0946
- Medicare enrollment
- Enrolled (PECOS I20120810000386); accepts Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 24221 Calle DE LA Louisa
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Barry Donner, MDGastroenterology Physician1679534796
- Raymond Fernandez, MDInternal Medicine Physician1629039532
- David Hatoff, MDGastroenterology Physician1619930567
- Brian HenryInternal Medicine Physician1629047824
Verify Catherine Bao Ngo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103043Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average gastroenterology physician in 2024
202 Medicare Part D claims for 101 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Omeprazole37 claims
- Sod Sulf-Potass Sulf-Mag Sulf20 claims
- Colestipol Hcl18 claims
- Lactulose15 claims
- Vemlidy12 claims
- Gavilyte-C11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $719.82
20 payments; by number, the most common kind was food and beverage; the largest payer was Enterra Medical, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Hoag ClinicAliso Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Bao Ngo among 2,140 gastroenterology physician records in California
Catherine Bao Ngo, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2006 · median 2002 among the 1,538 with a school on file
- Record last updated2012 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Laguna Hills → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Dalia Al-Mudallal, M.D.Laguna Hills, CA 926531356502116
- Shazia Ali, M.D.Laguna Hills, CA 926531063616217
- Rose Codini, M.D.Laguna Hills, CA 926531144215880
- Barry Donner, MDLaguna Hills, CA 926531679534796
- David Hatoff, MDLaguna Hills, CA 926531619930567
- Farid Jalali, M.D.Laguna Hills, CA 926531710244462
- Scott Lee, M.D.Laguna Hills, CA 926531063703890
- Priya SharmaLaguna Hills, CA 926531205396827
Common questions
What is Catherine Bao Ngo, M.D.'s NPI number?
Catherine Bao Ngo, M.D.'s National Provider Identifier (NPI) is 1558531129, issued on Mar 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Bao Ngo, M.D. located?
The NPPES record lists a practice address at 24221 Calle DE LA Louisa, Laguna Hills, CA, 92653. Phone: (949) 770-7163. Providers update this record themselves, so call before visiting.
How can I verify Catherine Bao Ngo, M.D.'s license?
NPPES lists California license number A103043, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine Bao Ngo, M.D. prescribe under Medicare Part D?
In 2024, Catherine Bao Ngo, M.D. had 202 Medicare Part D claims for 101 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Catherine Bao Ngo, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.