NPPES file of Aug 9, 2026

Katherine Allison Norris, M.D.

General Practice Physician · San Diego, CA

Katherine Allison Norris, M.D. is a general practice physician with a practice address in San Diego, California, and NPI 1356578769, issued on Jun 12, 2009. Check the license (California A131742, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1356578769
Name
Katherine Allison Norris
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License numbers
A131742 CA
0101248525 VA
Self-reported in NPPES; status is on the state search
Practice location
7801 Mission Center CT, San Diego, CA 92108
Phone
(619) 461-3717
Enumerated
Jun 12, 2009
Record last updated
May 11, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(619) 461-5663
Medicare enrollment
Enrolled (PECOS I20141014001033); accepts Medicare assignment
Medical or professional school
Uniformed Services Uhs Fe Hebert School Of Med, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 7801 Mission Center CT

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

  1. Theresa Aqui, NP-CGerontology Nurse Practitioner1912475542
  2. Rebecca Beckstrom, MS, CCC-SLPSpeech-Language Pathologist1689723132
  3. Rachel Lantacon, NPAdult Health Nurse Practitioner1366958738
  4. Richard Mahler, PT, MPT, CEASOrthopedic Physical Therapist1790729424
  5. Michael Mountain, D.C.Neurology Chiropractor1275640005
  6. Nicole Murphy, NPAcute Care Nurse Practitioner1104346022

Verify Katherine Allison Norris in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A131742
    Check 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
Open 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.

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68% more Medicare Part D claims than the average general practice physician in 2024

5,085 Medicare Part D claims for 110 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 39 claims were for opioids.

  1. Katherine Norris5,085
  2. Specialty average3,030

Most prescribed

  1. Levothyroxine Sodium260 claims
  2. Buspirone Hcl190 claims
  3. Trazodone Hcl182 claims
  4. Atorvastatin Calcium181 claims
  5. Amlodipine Besylate163 claims
  6. Mirtazapine151 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.

Bills Medicare through one group practice

  1. Pouya Afshar MD IncSan Diego, CA

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

Katherine Allison Norris among 1,956 general practice physician records in California

Katherine Allison Norris, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.

  • NPI issued2009 · 54% of these records are older, 42% newer
  • In a Medicare fileYes · 48% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated2009 · median 1994 among the 520 with a school on file
  • Record last updated2018 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Physician providers in California

There are 1,956 general practice physician records in California.

The 8 general practice physician records with the nearest ZIP codes

  1. Jennifer Davis, MDSan Diego, CA 921081720175862
  2. Robert Hunt, MDSan Diego, CA 921091740522564
  3. Peter Sun, M.D.San Diego, CA 921091740444264
  4. Clifford Ward, M.D.San Diego, CA 921091275747719
  5. Gerald Paul, MDSan Diego, CA 921101841380656
  6. Eugene Tachuk, M.D.San Diego, CA 921101417330432
  7. Edward Ahn, M.D.San Diego, CA 921111093805103
  8. Erick Cervantes, NDSan Diego, CA 921111942037767

Common questions

What is Katherine Allison Norris, M.D.'s NPI number?

Katherine Allison Norris, M.D.'s National Provider Identifier (NPI) is 1356578769, issued on Jun 12, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Allison Norris, M.D. located?

The NPPES record lists a practice address at 7801 Mission Center CT, San Diego, CA, 92108. Phone: (619) 461-3717. Providers update this record themselves, so call before visiting.

How can I verify Katherine Allison Norris, M.D.'s license?

NPPES lists California license number A131742, 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 Allison Norris, M.D. prescribe under Medicare Part D?

In 2024, Katherine Allison Norris, M.D. had 5,085 Medicare Part D claims for 110 beneficiaries; the average among general practice physician prescribers was 3,030. 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.