Julie Kim Nguyen, MD
Internal Medicine Physician · Sunnyvale, CA
Julie Kim Nguyen, MD is an internal medicine physician with a practice address in Sunnyvale, California, and NPI 1619618501, issued on Apr 5, 2022. Check the license (California A200184, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Julie Kim Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A200184 CA
Self-reported in NPPES; status is on the state search - Practice location
- 201 Old San Francisco RD, Sunnyvale, CA 94086
- Phone
- (408) 730-4256
- Enumerated
- Apr 5, 2022
- Record last updated
- Sep 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20250919002680); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 201 Old San Francisco RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ramona Collaco, FNP-CFamily Nurse Practitioner1902755705
Verify Julie Kim Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A200184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
104 Medicare Part D claims for 36 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Escitalopram Oxalate13 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Julie Kim Nguyen among 17,696 internal medicine physician records in California
Julie Kim Nguyen, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 internal medicine physician records list a practice address in Sunnyvale
They are 48 of the 1,690 NPPES records with a practice address in Sunnyvale, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sunnyvale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Priya Bhusri, M.D.Sunnyvale, CA 940861659386019
- Teresa Cheng, MDSunnyvale, CA 940861598772857
- Leon Cheng, MDSunnyvale, CA 940861104834407
- Peter Fay, MDSunnyvale, CA 940861154384337
- Anitha Gundupalli, MDSunnyvale, CA 940861568571206
- Grace Guo, MDSunnyvale, CA 940861902811375
- Jason Hwang, M.D.Sunnyvale, CA 940861669490926
- Quanjing Liu, MDSunnyvale, CA 940861760588834
Common questions
What is Julie Kim Nguyen, MD's NPI number?
Julie Kim Nguyen, MD's National Provider Identifier (NPI) is 1619618501, issued on Apr 5, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Julie Kim Nguyen, MD located?
The NPPES record lists a practice address at 201 Old San Francisco RD, Sunnyvale, CA, 94086. Phone: (408) 730-4256. Providers update this record themselves, so call before visiting.
How can I verify Julie Kim Nguyen, MD's license?
NPPES lists California license number A200184, 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 Julie Kim Nguyen, MD prescribe under Medicare Part D?
In 2024, Julie Kim Nguyen, MD had 104 Medicare Part D claims for 36 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.