Ngoc Patrick V. Nguyen, MD
Colon & Rectal Surgery Physician · Fontana, CA
Ngoc Patrick V. Nguyen, MD is a colon & rectal surgery physician with a practice address in Fontana, California, and NPI 1417153552, issued on Jun 25, 2007. Check the license (California GO77112, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ngoc Patrick V. Nguyen
- Credential
- MD
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- GO77112 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9985 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-3909
- Enumerated
- Jun 25, 2007
- Record last updated
- Oct 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081117000603); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 198 in California → Look up another NPI →
Also registered at 9985 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gerald ArafolOccupational Therapist1134315666
- Lovie Jay Arguelles, PTPhysical Therapist1457472920
Verify Ngoc Patrick V. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license GO77112Check 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 colon & rectal surgery physician in 2024
48 Medicare Part D claims for 20 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen11 claims
- Tramadol Hcl11 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.
Industry payments in 2024: $131.62
2 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 1,524 providers of this specialty with any payment received $3,468.16 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
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ngoc Patrick V. Nguyen among 198 colon & rectal surgery physician records in California
Ngoc Patrick V. Nguyen, MD is one of 198 colon & rectal surgery physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 40% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1989 · median 2002 among the 149 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in California
There are 198 colon & rectal surgery physician records in California.
All 198 in California → Every provider in Fontana → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Robert Yuhan, MDFontana, CA 923351144397969
- Matthew Whealon, MDColton, CA 923241902163710
- Allison Aka, MDLoma Linda, CA 923501891130100
- Justin Greco, MB BCH BAOLoma Linda, CA 923501376032888
- John Griffin, M.D.Loma Linda, CA 923541821014903
- David Row, M.D.Loma Linda, CA 923541871797118
- Scott Gering, MDRancho Mirage, CA 922701962495721
- Mohammed Iyoob Mohammed Ilyas, MDRancho Mirage, CA 922701902160195
Common questions
What is Ngoc Patrick V. Nguyen, MD's NPI number?
Ngoc Patrick V. Nguyen, MD's National Provider Identifier (NPI) is 1417153552, issued on Jun 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ngoc Patrick V. Nguyen, MD located?
The NPPES record lists a practice address at 9985 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-3909. Providers update this record themselves, so call before visiting.
How can I verify Ngoc Patrick V. Nguyen, MD's license?
NPPES lists California license number GO77112, 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 Ngoc Patrick V. Nguyen, MD prescribe under Medicare Part D?
In 2024, Ngoc Patrick V. Nguyen, MD had 48 Medicare Part D claims for 20 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
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.