Katherine Shaffer, M.D.
Student in an Organized Health Care Education/Training Program · San Diego, CA
Katherine Shaffer, M.D. is a student in an organized health care education/training program with a practice address in San Diego, California, and NPI 1336405695, issued on Apr 11, 2012. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Shaffer
- Credential
- M.D.
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 292 Euclid Ave Ste 115, San Diego, CA 92114
- Phone
- (619) 266-3332
- Enumerated
- Apr 11, 2012
- Entity
- Type 1 · individual
Also registered at 292 Euclid Ave Ste 115
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yendry Acosta, APRNAdult Health Nurse Practitioner1396255121
- Luis Chavez, MDGastroenterology Physician1295224905
- Xuantan ChenFamily Nurse Practitioner1760920854
- Yvonne Fermil, FNPRegistered Nurse1518086388
- Levon Tantoushian, DOGastroenterology Physician1730708967
- Carlton Thomas, M.D.Gastroenterology Physician1205881398
Verify Katherine Shaffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
83% more Medicare Part D claims than the average student in an organized health care education/training program in 2024
893 Medicare Part D claims for 316 beneficiaries, against an average of 488 among the 106,422 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Omeprazole292 claims
- Gavilyte-C95 claims
- Linzess64 claims
- Sod Sulf-Potass Sulf-Mag Sulf53 claims
- Pantoprazole Sodium48 claims
- Famotidine44 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: $185.38
9 payments, mostly food and beverage; the largest payer was Janssen Biotech, Inc.. The 42,769 providers of this specialty with any payment received $1,210.19 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.
One hospital or facility affiliation
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
2,704 student in an organized health care education/training program records list a San Diego practice address
They are 2,704 of the 52,937 NPPES records with a San Diego practice address, and 49,599 student in an organized health care education/training program records in California.
All 2,704 in San Diego → All 49,599 in California → Every provider in San Diego →
Other student in an organized health care education/training program records in California
- Sanad A'BasiFresno, CA1720915770
- Alexander Aabedi, MDSan Francisco, CA1245971480
- Andre AabediPomona, CA1891582102
- Natalie Aabodi, DMDPomona, CA1851085187
- Mati Aamed, PSY.D.Pacoima, CA1689285470
- Kjeld Aamodt, DDS, MSSan Francisco, CA1912250176
- Megan Aaronson, MD, MSCRLos Angeles, CA1386272102
- Manas AavulaPomona, CA1972496644
- Louisa AbadaOakland, CA1023502259
- Sharon AbadaSan Francisco, CA1003492844
Common questions
What is Katherine Shaffer, M.D.'s NPI number?
Katherine Shaffer, M.D.'s National Provider Identifier (NPI) is 1336405695, issued on Apr 11, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Shaffer, M.D. located?
The NPPES record lists a practice address at 292 Euclid Ave Ste 115, San Diego, CA, 92114. Phone: (619) 266-3332. Providers update this record themselves, so call before visiting.
How can I verify Katherine Shaffer, M.D.'s license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Shaffer, M.D. prescribe under Medicare Part D?
In 2024, Katherine Shaffer, M.D. had 893 Medicare Part D claims for 316 beneficiaries; the average among student in an organized health care education/training program prescribers was 488. 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.