Kevin Matthew Twombly, PA-C
Physician Assistant · Portsmouth, NH
Kevin Matthew Twombly, PA-C is a physician assistant with a practice address in Portsmouth, New Hampshire, and NPI 1245907666, issued on Aug 24, 2021. Check the license (New Hampshire 1793, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kevin Matthew Twombly
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1793 NH
Self-reported in NPPES; status is on the state search - Practice location
- 14 Manchester SQ Ste 290, Portsmouth, NH 03801
- Phone
- (603) 766-8500
- Enumerated
- Aug 24, 2021
- Record last updated
- Oct 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211006003053); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 947 in New Hampshire → Look up another NPI →
Verify Kevin Matthew Twombly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 1793Check 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% more Medicare Part D claims than the average physician assistant in 2024
1,034 Medicare Part D claims for 201 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 515 claims were for opioids.
Most prescribed
- Oxycodone Hcl228 claims
- Hydrocodone-Acetaminophen79 claims
- Gabapentin54 claims
- Oxycodone-Acetaminophen46 claims
- Tramadol Hcl36 claims
- Pregabalin35 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: $190.98
6 payments; by number, the most common kind was food and beverage; the largest payer was Becton, Dickinson and Company. The 64,719 providers of this specialty with any payment received $841.65 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
- Portsmouth Trauma And Surgical Care, LLCPortsmouth, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kevin Matthew Twombly among 947 physician assistant records in New Hampshire
Kevin Matthew Twombly, PA-C is one of 947 physician assistant records with a practice address in New Hampshire. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 70% of them.
- NPI issued2021 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2021 · median 2017 among the 730 with a school on file
- Record last updated2021 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 physician assistant records list a practice address in Portsmouth
They are 52 of the 1,860 NPPES records with a practice address in Portsmouth, and 947 physician assistant records in New Hampshire.
All 947 in New Hampshire → Every provider in Portsmouth → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Peter Attenborough, PA-CPortsmouth, NH 038011093895369
- Teresa Callahan, PA-CPortsmouth, NH 038011699715649
- Michele Guilfoyle, PA-CPortsmouth, NH 038011336133388
- Malcolm Hauthaway, PACPortsmouth, NH 038011396792156
- Heather Layfield, PA-CPortsmouth, NH 038011992855878
- Kathleen Leavitt, PAPortsmouth, NH 038011821211723
- Kathy Long, PA-CNewington, NH 038011326080250
- Dorothy McGrath, PA-CPortsmouth, NH 038011780641332
Common questions
What is Kevin Matthew Twombly, PA-C's NPI number?
Kevin Matthew Twombly, PA-C's National Provider Identifier (NPI) is 1245907666, issued on Aug 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Kevin Matthew Twombly, PA-C located?
The NPPES record lists a practice address at 14 Manchester SQ Ste 290, Portsmouth, NH, 03801. Phone: (603) 766-8500. Providers update this record themselves, so call before visiting.
How can I verify Kevin Matthew Twombly, PA-C's license?
NPPES lists New Hampshire license number 1793, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Kevin Matthew Twombly, PA-C prescribe under Medicare Part D?
In 2024, Kevin Matthew Twombly, PA-C had 1,034 Medicare Part D claims for 201 beneficiaries; the average among physician assistant prescribers was 830. 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.