Hong Phuc Nguyen, DO
Internal Medicine Physician · Lancaster, CA
Hong Phuc Nguyen, DO is an internal medicine physician with a practice address in Lancaster, California, and NPI 1992995997, issued on Jul 26, 2007. Check the license (California 20A11360, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hong Phuc Nguyen
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 20A11360 CA
5101017225 MI
N6536 TX
Self-reported in NPPES; status is on the state search - Practice location
- 44469 10TH St W, Lancaster, CA 93534
- Phone
- (661) 945-9411
- Enumerated
- Jul 26, 2007
- Record last updated
- Jul 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (661) 945-2035
- Medicare enrollment
- Enrolled (PECOS I20120601000303); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 44469 10TH St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ebenezer Odunusi, M.D.Pediatrics Physician1891728663
- Tuan Phan, MDFamily Medicine Physician1689633992
- Loc Quan, PHARM.D.Pharmacist1730558958
- Charles Rocamboli, D.O.Adult Medicine Physician1366639049
Verify Hong Phuc Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11360Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,134 Medicare Part D claims for 480 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 278 claims were for opioids.
Most prescribed
- Atorvastatin Calcium791 claims
- Metoprolol Succinate485 claims
- Midodrine Hcl425 claims
- Montelukast Sodium348 claims
- Lisinopril250 claims
- Tamsulosin Hcl218 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
- Sierra Medical Group Holding Company, Inc.Lancaster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hong Phuc Nguyen among 17,696 internal medicine physician records in California
Hong Phuc Nguyen, DO 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 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).
55 internal medicine physician records list a practice address in Lancaster
They are 55 of the 4,273 NPPES records with a practice address in Lancaster, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Lancaster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Harihar Agarwal, M.D.Lancaster, CA 935341215964150
- Naili Chen, D.O., MPH, MASCLancaster, CA 935341649251661
- Anthony Dulgeroff, M.D.Lancaster, CA 935341720199763
- Antony Fung, MDLancaster, CA 935341477526846
- Miranda Gaw, MDLancaster, CA 935341891705885
- Marvin Ginsburg, M.D.Lancaster, CA 935341508976580
- Shahid Hassan, M.D.Lancaster, CA 935341851401988
- Charles Lim, M.D.Lancaster, CA 935341205947231
Common questions
What is Hong Phuc Nguyen, DO's NPI number?
Hong Phuc Nguyen, DO's National Provider Identifier (NPI) is 1992995997, issued on Jul 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Hong Phuc Nguyen, DO located?
The NPPES record lists a practice address at 44469 10TH St W, Lancaster, CA, 93534. Phone: (661) 945-9411. Providers update this record themselves, so call before visiting.
How can I verify Hong Phuc Nguyen, DO's license?
NPPES lists California license number 20A11360, 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 Hong Phuc Nguyen, DO prescribe under Medicare Part D?
In 2024, Hong Phuc Nguyen, DO had 8,134 Medicare Part D claims for 480 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.