What is Michael Weiss's NPI number?

Michael Weiss's National Provider Identifier (NPI) is 1871699520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Weiss's specialty?

Michael Weiss is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).

Where is Michael Weiss located?

Michael Weiss's practice location on file with NPPES is 29941 Aventura, Rancho Santa Margarita, CA 92688-2015.

What is Michael Weiss's phone number?

The practice phone number listed in the NPPES registry for Michael Weiss is (949) 858-1100.

Is Michael Weiss's NPI active?

Yes — Michael Weiss's NPI (1871699520) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Michael Weiss, D.O.

NPI 1871699520 · Pediatrics Physician · Rancho Santa Margarita, CA

Michael Weiss, D.O. is a Pediatrics Physician provider in Rancho Santa Margarita, CA (NPI 1871699520).

Provider details

NPI number: 1871699520
Entity type: Individual
Primary specialty: Pediatrics PhysicianAllopathic & Osteopathic Physicians
Credential: D.O.
Sex: Male
Sole proprietor: No
License: 20A5260 (CA)

Specialties & taxonomies

Pediatrics PhysicianPrimary208000000XLicense 20A5260 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

29941 Aventura

Suites E&f

Rancho Santa Margarita, CA 92688-2015

Phone: (949) 858-1100

Street-level locationGet directions

More CA providers

Mailing address

23321 El Toro Rd

Lake Forest, CA 92630-4825

Enumerated: 2006-09-16
Last updated: 2007-07-08

Frequently asked questions

What is Michael Weiss's NPI number?: Michael Weiss's National Provider Identifier (NPI) is 1871699520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Michael Weiss's specialty?: Michael Weiss is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
Where is Michael Weiss located?: Michael Weiss's practice location on file with NPPES is 29941 Aventura, Rancho Santa Margarita, CA 92688-2015.
What is Michael Weiss's phone number?: The practice phone number listed in the NPPES registry for Michael Weiss is (949) 858-1100.
Is Michael Weiss's NPI active?: Yes — Michael Weiss's NPI (1871699520) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.