Jonathan Wilfred Sixon, M.D.
Family Medicine Physician · Milford, NH
Jonathan Wilfred Sixon, M.D. is a family medicine physician with a practice address in Milford, New Hampshire, and NPI 1114027570, issued on Sep 25, 2006. Check the license (New Hampshire 12080, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Jonathan Wilfred Sixon
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 12080 NH
Self-reported in NPPES; status is on the state search - Practice location
- 444 Nashua St, Milford, NH 03055
- Phone
- (603) 673-3014
- Enumerated
- Sep 25, 2006
- Record last updated
- May 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (603) 672-7654
- Medicaid ID
- 3073830 NH
- Medicare enrollment
- Enrolled (PECOS I20060313000461); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 816 in New Hampshire → Look up another NPI →
Also registered at 444 Nashua St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abir Azar, M.D.Pediatrics Physician1700819190
- Andrew Barton, PHARMDPharmacist1023714946
- Mary Carlson, APRNPediatric Nurse Practitioner1447236526
- Isabelle Holden, RNPediatric Registered Nurse1063147726
- Kelsey Kilgore, APRNFamily Nurse Practitioner1457962623
- Krista Lauer, M.D.Family Medicine Physician1679558407
Verify Jonathan Wilfred Sixon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 12080Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average family medicine physician in 2024
5,054 Medicare Part D claims for 465 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 113 claims were for opioids.
Most prescribed
- Atorvastatin Calcium359 claims
- Lisinopril217 claims
- Amlodipine Besylate210 claims
- Levothyroxine Sodium171 claims
- Omeprazole132 claims
- Metoprolol Succinate124 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.
Industry payments in 2024: $61.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- St. Joseph Hospital OF Nashua NHMilford, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Wilfred Sixon among 816 family medicine physician records in New Hampshire
Jonathan Wilfred Sixon, M.D. is one of 816 family medicine physician records with a practice address in New Hampshire. 74% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 43% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2000 · median 2003 among the 498 with a school on file
- Record last updated2020 · 62% 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 New Hampshire 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 Milford
They are 17 of the 205 NPPES records with a practice address in Milford, and 816 family medicine physician records in New Hampshire.
All 816 in New Hampshire → Every provider in Milford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rosalie Auster, MDMilford, NH 030551851327142
- Paul Austin, MDMilford, NH 030551740285980
- Kathy Brann, MDMilford, NH 030551336160746
- Sanders Burstein, MDMilford, NH 030551285654368
- Robert Dagostino, MDMilford, NH 030551801953260
- Colleen Guiry, MDMilford, NH 030551629157581
- Michael Kaploe, DOMilford, NH 030551073500682
- Nadia Khan, M.D.Milford, NH 030551679763536
Common questions
What is Jonathan Wilfred Sixon, M.D.'s NPI number?
Jonathan Wilfred Sixon, M.D.'s National Provider Identifier (NPI) is 1114027570, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Wilfred Sixon, M.D. located?
The NPPES record lists a practice address at 444 Nashua St, Milford, NH, 03055. Phone: (603) 673-3014. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Wilfred Sixon, M.D.'s license?
NPPES lists New Hampshire license number 12080, 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 Jonathan Wilfred Sixon, M.D. prescribe under Medicare Part D?
In 2024, Jonathan Wilfred Sixon, M.D. had 5,054 Medicare Part D claims for 465 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.