Myhanh J. Nguyen, MD
Internal Medicine Physician · Portsmouth, NH
Myhanh J. Nguyen, MD is an internal medicine physician with a practice address in Portsmouth, New Hampshire, and NPI 1518034826, issued on Nov 29, 2006. Check the license (New Hampshire 13553, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Myhanh J. Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 13553 NH
MD23141 ME
Self-reported in NPPES; status is on the state search - Practice location
- 333 Borthwick Ave, Portsmouth, NH 03801
- Phone
- (603) 463-5110
- Enumerated
- Nov 29, 2006
- Record last updated
- Mar 7, 2023
- Medicaid IDs
- 1518034826 ME
3074815 NH - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 673 in New Hampshire → Look up another NPI →
Also registered at 333 Borthwick Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Myhanh J. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 13553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
15 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Myhanh J. Nguyen among 673 internal medicine physician records in New Hampshire
Myhanh J. Nguyen, MD is one of 673 internal medicine physician records with a practice address in New Hampshire. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 53% 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 New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 internal medicine physician records list a practice address in Portsmouth
They are 37 of the 1,860 NPPES records with a practice address in Portsmouth, and 673 internal medicine physician records in New Hampshire.
All 673 in New Hampshire → Every provider in Portsmouth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jonathan Bridges, M.D.Newington, NH 038011083744510
- Thomas Clairmont, MDPortsmouth, NH 038011053415794
- Daniel Davies, DOPortsmouth, NH 038011083683833
- Gary Fagin, M.D.Portsmouth, NH 038011376518886
- Diane Flamburis, MDPortsmouth, NH 038011851367387
- Mark Henschke, DONewington, NH 038011922092667
- Sunila Jo, MDPortsmouth, NH 038011740290097
- Paris Khavari, MDPortsmouth, NH 038011790889434
Common questions
What is Myhanh J. Nguyen, MD's NPI number?
Myhanh J. Nguyen, MD's National Provider Identifier (NPI) is 1518034826, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Myhanh J. Nguyen, MD located?
The NPPES record lists a practice address at 333 Borthwick Ave, Portsmouth, NH, 03801. Phone: (603) 463-5110. Providers update this record themselves, so call before visiting.
How can I verify Myhanh J. Nguyen, MD's license?
NPPES lists New Hampshire license number 13553, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Myhanh J. Nguyen, MD prescribe under Medicare Part D?
In 2024, Myhanh J. Nguyen, MD had 15 Medicare Part D claims for 11 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.