Cynthia Lynn Schaeffer, M.D.
Gastroenterology Physician · San Diego, CA
Cynthia Lynn Schaeffer, M.D. is a gastroenterology physician with a practice address in San Diego, California, and NPI 1740352293, issued on Nov 13, 2006. Check the license (California A91771, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cynthia Lynn Schaeffer
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A91771 CA
Self-reported in NPPES; status is on the state search - Practice location
- 292 Euclid Ave, San Diego, CA 92114
- Phone
- (619) 266-3332
- Enumerated
- Nov 13, 2006
- Record last updated
- Dec 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (619) 266-6000
- Medicare enrollment
- Enrolled (PECOS I20050909000970); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 292 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Taddese Desta, M.D.Gastroenterology Physician1346326246
- Rodney Hood, MDInternal Medicine Physician1033102959
- Leon Kelley, MDPediatrics Physician1083685085
- Maxine KibbleMarriage & Family Therapist1962799825
- Ashvin Shenoy, M.D.Pediatrics Physician1619262664
- Elizabeth Waters, M.D.Pediatrics Physician1730477621
Verify Cynthia Lynn Schaeffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average gastroenterology physician in 2024
994 Medicare Part D claims for 432 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf193 claims
- Linzess170 claims
- Omeprazole120 claims
- Pantoprazole Sodium88 claims
- Gavilyte-G46 claims
- Famotidine35 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: $1,061.50
51 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through one group practice
- Digestive Disease Associates IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cynthia Lynn Schaeffer among 2,140 gastroenterology physician records in California
Cynthia Lynn Schaeffer, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1999 · median 2002 among the 1,538 with a school on file
- Record last updated2020 · 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 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in San Diego → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Taddese Desta, M.D.San Diego, CA 921141346326246
- Levon Tantoushian, DOSan Diego, CA 921141730708967
- Carlton Thomas, M.D.San Diego, CA 921141205881398
- Tony Cheng, MDSan Diego, CA 921111629698923
- Janice Oh, MDSan Diego, CA 921111417586082
- Karen Gordon, MDCoronado, CA 921181164506408
- Eric SzuCoronado, CA 921181578945853
- Daniel Anderson, MDSan Diego, CA 921201932286549
Common questions
What is Cynthia Lynn Schaeffer, M.D.'s NPI number?
Cynthia Lynn Schaeffer, M.D.'s National Provider Identifier (NPI) is 1740352293, issued on Nov 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Lynn Schaeffer, M.D. located?
The NPPES record lists a practice address at 292 Euclid Ave, San Diego, CA, 92114. Phone: (619) 266-3332. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Lynn Schaeffer, M.D.'s license?
NPPES lists California license number A91771, 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 Cynthia Lynn Schaeffer, M.D. prescribe under Medicare Part D?
In 2024, Cynthia Lynn Schaeffer, M.D. had 994 Medicare Part D claims for 432 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.