Brett Zachary Schaeffer, M.D.
Internal Medicine Physician · Loma Linda, CA
Brett Zachary Schaeffer, M.D. is an internal medicine physician with a practice address in Loma Linda, California, and NPI 1144753799, issued on Apr 10, 2017. Check the license (California 157216, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brett Zachary Schaeffer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 157216 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson St, Loma Linda, CA 92354
- Phone
- (909) 558-4006
- Enumerated
- Apr 10, 2017
- Record last updated
- Apr 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20230925003769); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11234 Anderson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brett Zachary Schaeffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 157216Check 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% fewer Medicare Part D claims than the average internal medicine physician in 2024
536 Medicare Part D claims for 126 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Albuterol Sulfate Hfa97 claims
- Trelegy Ellipta45 claims
- Montelukast Sodium37 claims
- Spiriva Handihaler21 claims
- Stiolto Respimat18 claims
- Bupropion Hcl Sr17 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: $1,271.03
7 payments; by number, the most common kind was food and beverage; the largest payer was Pulmonx Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Erlanger HealthChattanooga, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brett Zachary Schaeffer among 17,696 internal medicine physician records in California
Brett Zachary Schaeffer, M.D. 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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 Brett Zachary Schaeffer, M.D.'s NPI number?
Brett Zachary Schaeffer, M.D.'s National Provider Identifier (NPI) is 1144753799, issued on Apr 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Brett Zachary Schaeffer, M.D. located?
The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-4006. Providers update this record themselves, so call before visiting.
How can I verify Brett Zachary Schaeffer, M.D.'s license?
NPPES lists California license number 157216, 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 Brett Zachary Schaeffer, M.D. prescribe under Medicare Part D?
In 2024, Brett Zachary Schaeffer, M.D. had 536 Medicare Part D claims for 126 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.