Kathleen M. Leavitt, PA
Physician Assistant · Portsmouth, NH
Kathleen M. Leavitt, PA is a physician assistant with a practice address in Portsmouth, New Hampshire, and NPI 1821211723, issued on Apr 10, 2007. Check the license (New Hampshire 0174 P, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathleen M. Leavitt
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 0174 P NH
Self-reported in NPPES; status is on the state search - Practice location
- 333 Borthwick Ave, Portsmouth, NH 03801
- Phone
- (603) 431-5858
- Enumerated
- Apr 10, 2007
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (603) 431-5818
- Medicare enrollment
- Enrolled (PECOS I20051031000343); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 947 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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- Nicholas Alana, MDInternal Medicine Physician1922687599
- Donavon Albertson, MDEmergency Medicine Physician1780759027
- Hossam Algamil, M.D.Hospitalist Physician1942429865
Verify Kathleen M. Leavitt 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 0174 PCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average physician assistant in 2024
93 Medicare Part D claims for 51 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Tramadol Hcl25 claims
- Oxycodone Hcl14 claims
- Ondansetron Hcl13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 63.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $149.58
2 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. 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
- The Knee Hip And Shoulder CenterPortsmouth, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen M. Leavitt among 947 physician assistant records in New Hampshire
Kathleen M. Leavitt, PA 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 2007, is newer than 17% of them.
- NPI issued2007 · 17% of these records are older, 77% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1990 · median 2017 among the 730 with a school on file
- Record last updated2007 · 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
- Kathy Long, PA-CNewington, NH 038011326080250
- Dorothy McGrath, PA-CPortsmouth, NH 038011780641332
- Kathleen Morgan, PA-CPortsmouth, NH 038011003004185
Common questions
What is Kathleen M. Leavitt, PA's NPI number?
Kathleen M. Leavitt, PA's National Provider Identifier (NPI) is 1821211723, issued on Apr 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen M. Leavitt, PA located?
The NPPES record lists a practice address at 333 Borthwick Ave, Portsmouth, NH, 03801. Phone: (603) 431-5858. Providers update this record themselves, so call before visiting.
How can I verify Kathleen M. Leavitt, PA's license?
NPPES lists New Hampshire license number 0174 P, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Kathleen M. Leavitt, PA prescribe under Medicare Part D?
In 2024, Kathleen M. Leavitt, PA had 93 Medicare Part D claims for 51 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Kathleen M. Leavitt, PA's MIPS final score?
The 2023 MIPS final score is 63.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.