Katherine Longardner
NPI 1801215926 · Neurology with Special Qualifications in Child Neurology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Longardner is a Neurology with Special Qualifications in Child Neurology Physician provider in San Diego, CA (NPI 1801215926).
Provider details
- NPI number
- 1801215926
- Entity type
- Individual
- Primary specialty
- Neurology with Special Qualifications in Child Neurology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A137963 (CA)
Specialties & taxonomies
- Neurology with Special Qualifications in Child Neurology PhysicianPrimary2084N0402XLicense A137963 (CA)
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
355 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 118 | $190 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 80 | $148 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 55 | $17 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 37 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 201 | 64 |
| Carbidopa/Levodopabrand: Rytary | 83 | 25 |
| Propranolol Hcl | 38 | 13 |
| Quetiapine Fumarate | 25 | — |
| Amantadine Hclbrand: Amantadine | 24 | — |
| Midodrine Hcl | 24 | — |
| Rivastigmine Tartratebrand: Rivastigmine | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,536 across 5 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
Additional practice locations (4)
- 4520 Executive DrSan Diego, CA 92121-3018Phone: (800) 926-8273Fax: (888) 539-8781
- 4250 1st AveSan Diego, CA 92103Phone: (800) 926-8273Fax: (888) 539-8781
- 6655 Alvarado RdSan Diego, CA 92120-5208Phone: (800) 926-8273Fax: (888) 539-8781
- 4510 Executive Dr Ste 325San Diego, CA 92121-3069Phone: (800) 926-8273Fax: (888) 539-8781
Registry dates
- Enumerated
- 2014-04-16
- Last updated
- 2025-09-26
- Certified
- 2025-09-26
Frequently asked questions
- What is Katherine Longardner's NPI number?
- Katherine Longardner's National Provider Identifier (NPI) is 1801215926, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Longardner's specialty?
- Katherine Longardner is listed in the NPPES registry with a primary specialty of Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Longardner located?
- Katherine Longardner's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Katherine Longardner's phone number?
- The practice phone number listed in the NPPES registry for Katherine Longardner is (800) 926-8273.
- Does Katherine Longardner accept Medicare?
- Katherine Longardner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Longardner's NPI active?
- Yes — Katherine Longardner's NPI (1801215926) is active in the NPPES registry as of the last update on 2025-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.