IndividualActive
Howard Siegel, M.D.
NPI 1669589750 · Pediatrics Physician · Garden Grove, CA
Howard Siegel, M.D. is a Pediatrics Physician provider in Garden Grove, CA (NPI 1669589750).
Provider details
- NPI number
- 1669589750
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A50183 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(95/100 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
2 documented practice locations
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
12062 Valley View St
Suite 200
Garden Grove, CA 92845-1737
Phone: (714) 908-5636
Fax: (714) 908-5616
Street-level locationGet directions
Mailing address
Po Box 35380
Las Vegas, NV 89133-5380
Additional practice locations (1)
- 3990 Concours Fl 5Ontario, CA 91764-7970Phone: (909) 605-8000
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2026-02-24
- Certified
- 2026-02-24
Frequently asked questions
- What is Howard Siegel's NPI number?
- Howard Siegel's National Provider Identifier (NPI) is 1669589750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Howard Siegel's specialty?
- Howard Siegel is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Howard Siegel located?
- Howard Siegel's practice location on file with NPPES is 12062 Valley View St, Garden Grove, CA 92845-1737.
- What is Howard Siegel's phone number?
- The practice phone number listed in the NPPES registry for Howard Siegel is (714) 908-5636.
- Is Howard Siegel's NPI active?
- Yes — Howard Siegel's NPI (1669589750) is active in the NPPES registry as of the last update on 2026-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.