NPPES file of Aug 9, 2026

Ngoc H. Duong, DO

Family Medicine Physician · Manhattan Beach, CA

Ngoc H. Duong, DO is a family medicine physician with a practice address in Manhattan Beach, California, and NPI 1255033270, issued on Mar 21, 2023. Check the license (California 20A23995, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255033270
Name
Ngoc H. Duong
Credential
DO
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A23995 CA
Self-reported in NPPES; status is on the state search
Practice location
855 Manhattan Beach Blvd Ste 102, Manhattan Beach, CA 90266
Phone
(310) 939-7858
Enumerated
Mar 21, 2023
Record last updated
Jul 13, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 855 Manhattan Beach Blvd Ste 102

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jennifer Baars, MDInternal Medicine Physician1578785218
  2. Sonia Dhairyawan-Carvalho, MDFamily Medicine Physician1750022422

Verify Ngoc H. Duong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A23995
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average family medicine physician in 2024

89 Medicare Part D claims for 24 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Ngoc Duong89
  2. Specialty average3,544

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: $23.52

1 payment: food and beverage; the largest payer was Vifor Pharma, 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.

  1. Ngoc Duong$23.52
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Ngoc H. Duong among 17,133 family medicine physician records in California

Ngoc H. Duong, DO 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 2023, is newer than 97% of them.

  • NPI issued2023 · 97% of these records are older, 1% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2026 · 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).

17 family medicine physician records list a practice address in Manhattan Beach

They are 17 of the 675 NPPES records with a practice address in Manhattan Beach, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Girija Charugundla, M.DManhattan Beach, CA 902661639327802
  2. Hardeep Chohan, MDManhattan Beach, CA 902661396272647
  3. Keyvan Hariri, M.D.Manhattan Beach, CA 902661093754913
  4. Lee Kissel, MDManhattan Beach, CA 902661164473351
  5. Maria Lui, MDManhattan Beach, CA 902661134172885
  6. Jon Malachowski, MDManhattan Beach, CA 902661033200514
  7. Wayman Merrill III, MDManhattan Beach, CA 902661225186190
  8. Vidya Ramesh, M.D.Manhattan Beach, CA 902661053525188

Common questions

What is Ngoc H. Duong, DO's NPI number?

Ngoc H. Duong, DO's National Provider Identifier (NPI) is 1255033270, issued on Mar 21, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Ngoc H. Duong, DO located?

The NPPES record lists a practice address at 855 Manhattan Beach Blvd Ste 102, Manhattan Beach, CA, 90266. Phone: (310) 939-7858. Providers update this record themselves, so call before visiting.

How can I verify Ngoc H. Duong, DO's license?

NPPES lists California license number 20A23995, 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 H. Duong, DO prescribe under Medicare Part D?

In 2024, Ngoc H. Duong, DO had 89 Medicare Part D claims for 24 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.