NPPES file of Aug 9, 2026

Donald Arthur Sandweiss, M.D.

Internal Medicine Physician · Bonita, CA

Donald Arthur Sandweiss, M.D. is an internal medicine physician with a practice address in Bonita, California, and NPI 1790078921, issued on May 20, 2011. Check the license (California C33224, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1790078921
Name
Donald Arthur Sandweiss
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
C33224 CA
Self-reported in NPPES; status is on the state search
Practice location
314 Surrey Dr, Bonita, CA 91902
Phone
(619) 479-6234
Enumerated
May 20, 2011
Record last updated
May 20, 2011 (not updated in 15 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Donald Arthur Sandweiss in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C33224
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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99% fewer Medicare Part D claims than the average internal medicine physician in 2024

38 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Donald Sandweiss38
  2. Specialty average3,176

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.

Donald Arthur Sandweiss among 17,696 internal medicine physician records in California

Donald Arthur Sandweiss, 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 2011, is newer than 66% of them.

  • NPI issued2011 · 66% of these records are older, 32% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2011 · 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).

6 internal medicine physician records list a practice address in Bonita

They are 6 of the 140 NPPES records with a practice address in Bonita, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Isaac Davis, DOBonita, CA 919021487232419
  2. Clint Hoangquocgia, D.O.Bonita, CA 919021225240518
  3. Brett Holko, D.O.Bonita, CA 919021740398213
  4. Jose Leon, MDBonita, CA 919021962471292
  5. Rosevelle McMillin, M.D.Bonita, CA 919021750573309
  6. Joyce Kellawon, MDAlpine, CA 919011780795476
  7. Robert Klemens, M.D.Alpine, CA 919011912244856
  8. Dana Ryan, DR.Alpine, CA 919011780609990

Common questions

What is Donald Arthur Sandweiss, M.D.'s NPI number?

Donald Arthur Sandweiss, M.D.'s National Provider Identifier (NPI) is 1790078921, issued on May 20, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Donald Arthur Sandweiss, M.D. located?

The NPPES record lists a practice address at 314 Surrey Dr, Bonita, CA, 91902. Phone: (619) 479-6234. Providers update this record themselves, so call before visiting.

How can I verify Donald Arthur Sandweiss, M.D.'s license?

NPPES lists California license number C33224, 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 Donald Arthur Sandweiss, M.D. prescribe under Medicare Part D?

In 2024, Donald Arthur Sandweiss, M.D. had 38 Medicare Part D claims; 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.