Michael Weiss, D.O.
Pediatrics Physician · Rancho Santa Margarita, CA
Michael Weiss, D.O. is a pediatrics physician with a practice address in Rancho Santa Margarita, California, and NPI 1871699520, issued on Sep 16, 2006. Check the license (California 20A5260, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Michael Weiss
- Credential
- D.O.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 20A5260 CA
Self-reported in NPPES; status is on the state search - Practice location
- 29941 Aventura, Rancho Santa Margarita, CA 92688
- Phone
- (949) 858-1100
- Enumerated
- Sep 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 29941 Aventura
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stephen Tang, M.D.Pediatrics Physician1750487401
Verify Michael Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Michael Weiss among 9,272 pediatrics physician records in California
Michael Weiss, D.O. is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileNo · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 pediatrics physician records list a practice address in Rancho Santa Margarita
They are 9 of the 479 NPPES records with a practice address in Rancho Santa Margarita, and 9,272 pediatrics physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9,272 in California → Every provider in Rancho Santa Margarita → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Antoinette Delvalle, D.O.Rancho Santa Margarita, CA 926881285826248
- Cynthia Dimalanta, MDRancho Santa Margarita, CA 926881649310608
- Daizy Engineer, MDRancho Santa Margarita, CA 926881467442897
- Bonnie Pittaluga, MDRancho Santa Margarita, CA 926881437135019
- Stephen Tang, M.D.Rancho Santa Margarita, CA 926881750487401
- Shruti Vora, M.D.Rancho Santa Margarita, CA 926881881014686
- Eric Wong, MDRancho Santa Margarita, CA 926881104808161
- Rose Yson-Zaragoza, M.D.Rancho Santa Margarita, CA 926881811093578
Common questions
What is Michael Weiss, D.O.'s NPI number?
Michael Weiss, D.O.'s National Provider Identifier (NPI) is 1871699520, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Weiss, D.O. located?
The NPPES record lists a practice address at 29941 Aventura, Rancho Santa Margarita, CA, 92688. Phone: (949) 858-1100. Providers update this record themselves, so call before visiting.
How can I verify Michael Weiss, D.O.'s license?
NPPES lists California license number 20A5260, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.