Karen Mather
NPI 1558805457 · Physician Assistant · Manchester, NH
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Mather is a Physician Assistant provider in Manchester, NH (NPI 1558805457).
Provider details
- NPI number
- 1558805457
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 1225 (NH)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 60 | — |
| Lisinopril | 58 | 16 |
| Atorvastatin Calcium | 58 | 18 |
| Simvastatin | 47 | — |
| Metformin Hcl | 43 | — |
| Hydrochlorothiazide | 35 | — |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$58 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-12-12
- Last updated
- 2021-07-28
- Certified
- 2021-07-28
Frequently asked questions
- What is Karen Mather's NPI number?
- Karen Mather's National Provider Identifier (NPI) is 1558805457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Mather's specialty?
- Karen Mather is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Mather located?
- Karen Mather's practice location on file with NPPES is 145 Hollis St, Manchester, NH 03101-1235.
- What is Karen Mather's phone number?
- The practice phone number listed in the NPPES registry for Karen Mather is (603) 626-9500.
- Does Karen Mather accept Medicare?
- Karen Mather is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Mather's NPI active?
- Yes — Karen Mather's NPI (1558805457) is active in the NPPES registry as of the last update on 2021-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.