John Alexander, M.D.
Internal Medicine Physician · Nashua, NH
John Alexander, M.D. is an internal medicine physician with a practice address in Nashua, New Hampshire, and NPI 1144259508, issued on Jun 30, 2006. Check the license (New Hampshire 13445, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Alexander
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 13445 NH
Self-reported in NPPES; status is on the state search - Practice location
- 17 Prospect St, Nashua, NH 03060
- Phone
- (603) 594-6337
- Enumerated
- Jun 30, 2006
- Entity
- Type 1 · individual
Also registered at 17 Prospect St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Barger, MDOrthopaedic Surgery Physician1801326046
- Candice Camacho, MDInternal Medicine Physician1447231584
- Eric Chang, MDNeurological Surgery Physician1538295928
- Sarah DeanPhysician Assistant1033802822
- Jennifer Drouin, PA-CPhysician Assistant1942504998
- Jon Duhaime, FNPFamily Nurse Practitioner1710345509
Verify John Alexander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 13445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
25% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,089 Medicare Part D claims for 177 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. 126 claims were for opioids.
Most prescribed
- Atorvastatin Calcium107 claims
- Amlodipine Besylate79 claims
- Oxycodone Hcl63 claims
- Omeprazole62 claims
- Rosuvastatin Calcium55 claims
- Alprazolam54 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.
One hospital or facility affiliation
- Foundation Medical Partners IncMilford, NH
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
78 internal medicine physician records list a Nashua practice address
They are 78 of the 3,140 NPPES records with a Nashua practice address, and 779 internal medicine physician records in New Hampshire.
All 78 in Nashua → All 779 in New Hampshire → Every provider in Nashua →
Other internal medicine physician records in New Hampshire
- Lauren Abbott, MDPortsmouth, NH1619597234
- Cherif Abdelmalek, M.D.Nashua, NH1922396753
- Champa Abeysinghe, M.D.New London, NH1629257134
- Suzanne Abkowitz, MDNorth Conway, NH1811906506
- Arthur Ablayev, MDConcord, NH1598178881
- Indira AcharyaLebanon, NH1407428600
- Philip Adamo, MDLebanon, NH1437106838
- Lisa Adams, MDLebanon, NH1912225186
- Muhammad Afzal, M.D.Lebanon, NH1982983821
- Ojobumijo Agbaji, MDLaconia, NH1689195042
Common questions
What is John Alexander, M.D.'s NPI number?
John Alexander, M.D.'s National Provider Identifier (NPI) is 1144259508, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Alexander, M.D. located?
The NPPES record lists a practice address at 17 Prospect St, Nashua, NH, 03060. Phone: (603) 594-6337. Providers update this record themselves, so call before visiting.
How can I verify John Alexander, M.D.'s license?
NPPES lists New Hampshire license number 13445, 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 John Alexander, M.D. prescribe under Medicare Part D?
In 2024, John Alexander, M.D. had 2,089 Medicare Part D claims for 177 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.