NPPES file of Aug 9, 2026

Katherine Drilling, PA-C

Physician Assistant · Carlsbad, CA

Katherine Drilling, PA-C is a physician assistant with a practice address in Carlsbad, California, and NPI 1083349997, issued on Jul 24, 2022. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083349997
Name
Katherine Drilling
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
Practice location
1905 Calle Barcelona Ste 211, Carlsbad, CA 92009
Phone
(858) 799-0933
Enumerated
Jul 24, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 1905 Calle Barcelona Ste 211

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kylie BobertzPhysician Assistant1235838665
  2. Evelyn Evans, PA-C, MSPhysician Assistant1801416839
  3. Maysa Nagi, MDFamily Medicine Physician1497794655

Verify Katherine Drilling in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

66% more Medicare Part D claims than the average physician assistant in 2024

1,381 Medicare Part D claims for 339 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 24 claims were for opioids.

  1. Katherine Drilling1,381
  2. Specialty average830

Most prescribed

  1. Atorvastatin Calcium61 claims
  2. Amlodipine Besylate51 claims
  3. Rosuvastatin Calcium49 claims
  4. Escitalopram Oxalate44 claims
  5. Levothyroxine Sodium44 claims
  6. Losartan Potassium41 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: $330.68

13 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. 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.

  1. Katherine Drilling$330.68
  2. Specialty average$841.65

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

  1. Monica Perlman MD IncCarlsbad, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

40 physician assistant records list a practice address in Carlsbad

They are 40 of the 3,411 NPPES records with a practice address in Carlsbad, and 14,451 physician assistant records in California.

Other physician assistant records in California

  1. Marcia -Galbraith, PAStockton, CA1407143274
  2. Danny Abad, PAOrange, CA1477158673
  3. Lea Dominique Abadies, PATustin, CA1124754254
  4. Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
  5. Ramina Abbasi, PA-CSignal Hill, CA1093448300
  6. Ariel Abbott, PA-CStockton, CA1780334342
  7. Barrie Abbott, PA-CAnza, CA1861602575
  8. Elizabeth Abbott, PA-CSan Diego, CA1437540762
  9. Terri Abbott, P.A.La Jolla, CA1811165566
  10. Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334

Common questions

What is Katherine Drilling, PA-C's NPI number?

Katherine Drilling, PA-C's National Provider Identifier (NPI) is 1083349997, issued on Jul 24, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Drilling, PA-C located?

The NPPES record lists a practice address at 1905 Calle Barcelona Ste 211, Carlsbad, CA, 92009. Phone: (858) 799-0933. Providers update this record themselves, so call before visiting.

How can I verify Katherine Drilling, PA-C's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Katherine Drilling, PA-C prescribe under Medicare Part D?

In 2024, Katherine Drilling, PA-C had 1,381 Medicare Part D claims for 339 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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) 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 27, 2026.