Katherine Jean Mower
Internal Medicine Physician · Loma Linda, CA
Katherine Jean Mower is an internal medicine physician with a practice address in Loma Linda, California, and NPI 1629632740, issued on Apr 24, 2019. Check the license (California 20A19782, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Jean Mower
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A19782 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson Street, Loma Linda, CA 92354
- Phone
- (909) 558-4074
- Enumerated
- Apr 24, 2019
- Record last updated
- Dec 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20230510001676); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11234 Anderson Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Jean Mower in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A19782Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
18 Medicare Part D claims for 12 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Inpatient Specialists OF California PCSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Jean Mower among 17,696 internal medicine physician records in California
Katherine Jean Mower is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2019 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
212 internal medicine physician records list a practice address in Loma Linda
They are 212 of the 4,863 NPPES records with a practice address in Loma Linda, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Loma Linda → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Baylink, M.D.Loma Linda, CA 923541518983113
- David Bee, M.D.Loma Linda, CA 923541720005176
- Adrian Cotton, M.D.Loma Linda, CA 923541639196850
- Debra Craig, M.D.Loma Linda, CA 923541255351151
- Balu Gadhe, M.D.Loma Linda, CA 923541740233808
- Bevan Geslani, M.D.Loma Linda, CA 923541992741862
- Susan Hall, M.D.Loma Linda, CA 923541972523876
- Suchaya Jinamornphongs, M.D.Loma Linda, CA 923541649299876
Common questions
What is Katherine Jean Mower's NPI number?
Katherine Jean Mower's National Provider Identifier (NPI) is 1629632740, issued on Apr 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Jean Mower located?
The NPPES record lists a practice address at 11234 Anderson Street, Loma Linda, CA, 92354. Phone: (909) 558-4074. Providers update this record themselves, so call before visiting.
How can I verify Katherine Jean Mower's license?
NPPES lists California license number 20A19782, 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 Jean Mower prescribe under Medicare Part D?
In 2024, Katherine Jean Mower had 18 Medicare Part D claims for 12 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.