Katherine Mahar
NPI 1588210827 · Physician Assistant · Buffalo, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mahar is a Physician Assistant provider in Buffalo, NY (NPI 1588210827).
Provider details
- NPI number
- 1588210827
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 023850 (NY)
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 tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
289 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $76 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 85 | $53 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 70 | $114 |
Typical Medicare-allowed amounts for these services range $53–$114 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 90 | 37 |
| Dexamethasone | 54 | 41 |
| Apixabanbrand: Eliquis | 54 | 21 |
| Prochlorperazine Maleate | 52 | 45 |
| Duloxetine Hcl | 23 | — |
| Letrozole | 22 | — |
| Dexamethasone Sodium Phosphate | 21 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$397 across 4 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
- 2019-08-13
- Last updated
- 2021-01-20
- Certified
- 2021-01-20
Frequently asked questions
- What is Katherine Mahar's NPI number?
- Katherine Mahar's National Provider Identifier (NPI) is 1588210827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mahar's specialty?
- Katherine Mahar is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Mahar located?
- Katherine Mahar's practice location on file with NPPES is Elm and Carlton Streets, Buffalo, NY 14263-0001.
- What is Katherine Mahar's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mahar is (716) 845-2300.
- Does Katherine Mahar accept Medicare?
- Katherine Mahar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mahar's NPI active?
- Yes — Katherine Mahar's NPI (1588210827) is active in the NPPES registry as of the last update on 2021-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.