Katherine Marie Longardner
Neurology with Special Qualifications in Child Neurology Physician · San Diego, CA
Katherine Marie Longardner is a neurology with special qualifications in child neurology physician with a practice address in San Diego, California, and NPI 1801215926, issued on Apr 16, 2014. Check the license (California A137963, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Marie Longardner
- Primary taxonomy
- Neurology with Special Qualifications in Child Neurology Physician 2084N0402X
- License number
- A137963 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr, San Diego, CA 92103
- Phone
- (800) 926-8273
- Enumerated
- Apr 16, 2014
- Record last updated
- Sep 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20200731000828); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology with special qualifications in child neurology physician records → All 271 in California → Look up another NPI →
Also registered at 200 W Arbor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison A'Court, MDAnesthesiology Physician1912218199
- Benjamin Abbadessa, M.D.Colon & Rectal Surgery Physician1255593612
- Geraldine Abcede, RNCertified Registered Nurse Anesthetist1982384046
- Joseph Abdelmalek, M.DNephrology Physician1740485531
- Kristy AbelCertified Registered Nurse Anesthetist1962113035
- Paula Abeleda, NPFamily Nurse Practitioner1558945022
Verify Katherine Marie Longardner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A137963Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average neurology with special qualifications in child neurology physician in 2024
704 Medicare Part D claims for 143 beneficiaries, against an average of 278 among the 900 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Carbidopa-Levodopa201 claims
- Rytary83 claims
- Propranolol Hcl38 claims
- Quetiapine Fumarate25 claims
- Amantadine24 claims
- Midodrine Hcl24 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: $1,536.20
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,195 providers of this specialty with any payment received $5,568.05 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
- Regents OF The University OF CaliforniaSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Marie Longardner among 271 neurology with special qualifications in child neurology physician records in California
Katherine Marie Longardner is one of 271 neurology with special qualifications in child neurology physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 68% of them.
- NPI issued2014 · 68% of these records are older, 28% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 33% of these records are
- Graduated2014 · median 2011 among the 90 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0402X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology with Special Qualifications in Child Neurology Physician providers in California
There are 271 neurology with special qualifications in child neurology physician records in California.
All 271 in California → Every provider in San Diego → Neurology with Special Qualifications in Child Neurology Physician nationwide →
The 8 neurology with special qualifications in child neurology physician records with the nearest ZIP codes
- Merveen Appu, M.D.San Diego, CA 921031194046193
- Jennifer Meylor, MDSan Diego, CA 921031811523939
- Mark Nespeca, M.D.San Diego, CA 921031942371703
- Regina Troxell, MDSan Diego, CA 921031013350586
- Alexandria Valdrighi, MDSan Diego, CA 921031346700184
- Suzanne Goh-Hattangadi, M.D.San Diego, CA 921211427176700
- John Crawford, MDSan Diego, CA 921231982790259
- Joseph Gleeson, M.D.San Diego, CA 921231689745440
Common questions
What is Katherine Marie Longardner's NPI number?
Katherine Marie Longardner's National Provider Identifier (NPI) is 1801215926, issued on Apr 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marie Longardner located?
The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marie Longardner's license?
NPPES lists California license number A137963, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Marie Longardner prescribe under Medicare Part D?
In 2024, Katherine Marie Longardner had 704 Medicare Part D claims for 143 beneficiaries; the average among neurology with special qualifications in child neurology physician prescribers was 278. 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.