Catherine Nguyen, M.D.
Family Medicine Physician · Walnut Creek, CA
Catherine Nguyen, M.D. is a family medicine physician with a practice address in Walnut Creek, California, and NPI 1043660087, issued on Jun 21, 2016. Check the license (California A152492, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Catherine Nguyen
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A152492 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2337 Oak Grove RD, Walnut Creek, CA 94598
- Phone
- (888) 663-6331
- Enumerated
- Jun 21, 2016
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20191014002084); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2337 Oak Grove RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shagun Bindlish, MDInternal Medicine Physician1487885067
- Carolyn Cardamone, P.A-CPhysician Assistant1639194616
- Megan Dodson, PA-CPhysician Assistant1750720850
- Madelyn GarciaFamily Medicine Physician1003558735
- Theron Goudeau, F.N.P.Nurse Practitioner1275928756
- Shikha Goyal, PA-CPhysician Assistant1255003489
Verify Catherine Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152492Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
299 Medicare Part D claims for 36 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Amlodipine Besylate15 claims
- Lisinopril15 claims
- Losartan Potassium15 claims
- Rosuvastatin Calcium14 claims
- Atorvastatin Calcium13 claims
- Sertraline Hcl13 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: $55.89
2 payments; by number, the most common kind was food and beverage; the largest payer was Puma Biotechnology, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- One Medical Group IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Nguyen among 17,133 family medicine physician records in California
Catherine Nguyen, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 76% of them.
- NPI issued2016 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2016 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
116 family medicine physician records list a practice address in Walnut Creek
They are 116 of the 6,170 NPPES records with a practice address in Walnut Creek, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Walnut Creek → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Taejoon Ahn, M.D.Walnut Creek, CA 945981639198757
- Leatrice Chang, MDWalnut Creek, CA 945981700822053
- John Crockett, M.D.Walnut Creek, CA 945981134221021
- Dennis Fong, M.D.Walnut Creek, CA 945981356364871
- Paul Kim, M.D.Walnut Creek, CA 945981609831163
- Pavani Kuruma, MDWalnut Creek, CA 945981285601310
- Franklin Long, MD MPHTMWalnut Creek, CA 945981194744045
- Timmothy Merrigan, M.D.Walnut Creek, CA 945981063442945
Common questions
What is Catherine Nguyen, M.D.'s NPI number?
Catherine Nguyen, M.D.'s National Provider Identifier (NPI) is 1043660087, issued on Jun 21, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Nguyen, M.D. located?
The NPPES record lists a practice address at 2337 Oak Grove RD, Walnut Creek, CA, 94598. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Catherine Nguyen, M.D.'s license?
NPPES lists California license number A152492, 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 Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Catherine Nguyen, M.D. had 299 Medicare Part D claims for 36 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.