Katherine Nicholas Jacob, M.D.
Endocrinology, Diabetes & Metabolism Physician · Loma Linda, CA
Katherine Nicholas Jacob, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Loma Linda, California, and NPI 1497780571, issued on Jul 11, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Nicholas Jacob
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- L2344 TX
Self-reported in NPPES; status is on the state search - Practice location
- 11201 Benton St, Loma Linda, CA 92357
- Phone
- (909) 825-7084
- Enumerated
- Jul 11, 2006
- Record last updated
- Jan 19, 2026
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 11201 Benton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arlene AbarcaCritical Care Medicine Registered Nurse1437073467
- Antonio Abiog, M.D.Surgery Physician1952492522
- Hesham AbugufaDentist1538875794
- Matthew Adams, DPTPhysical Therapist1184786071
- Susann Adams, LCSWClinical Social Worker1295849362
- Raychelle Addo, LCSWClinical Social Worker1033307251
Verify Katherine Nicholas Jacob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
12 Medicare Part D claims, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
- Strensiq12 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.
Katherine Nicholas Jacob among 1,131 endocrinology, diabetes & metabolism physician records in California
Katherine Nicholas Jacob, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Loma Linda → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Olha Fomenko, MDLoma Linda, CA 923571487860896
- Tania Arous, MDLoma Linda, CA 923541114468360
- Kevin Codorniz, M.D.Loma Linda, CA 923541871702316
- Scott Lee, M.D.Loma Linda, CA 923541902902042
- Takahiro Otsuka, MDLoma Linda, CA 923541790895803
- Eujean ParkLoma Linda, CA 923541801423926
- Matheni Sathananthan, M.D.Loma Linda, CA 923541467698001
- Hye Jeong HanLoma Linda, CA 923501346877842
Common questions
What is Katherine Nicholas Jacob, M.D.'s NPI number?
Katherine Nicholas Jacob, M.D.'s National Provider Identifier (NPI) is 1497780571, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Nicholas Jacob, M.D. located?
The NPPES record lists a practice address at 11201 Benton St, Loma Linda, CA, 92357. Phone: (909) 825-7084. Providers update this record themselves, so call before visiting.
How can I verify Katherine Nicholas Jacob, M.D.'s license?
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 Nicholas Jacob, M.D. prescribe under Medicare Part D?
In 2024, Katherine Nicholas Jacob, M.D. had 12 Medicare Part D claims; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.