John Thanasukarn, M.D.
NPI 1144674003 · Pediatrics Physician · Downey, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Thanasukarn, M.D. is a Pediatrics Physician provider in Downey, CA (NPI 1144674003).
Provider details
- NPI number
- 1144674003
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A156685 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Additional practice locations (1)
- 25845 Barton RdLoma Linda, CA 92354-3899Phone: (909) 558-2828
Registry dates
- Enumerated
- 2016-04-18
- Last updated
- 2025-10-07
- Certified
- 2025-10-07
Frequently asked questions
- What is John Thanasukarn's NPI number?
- John Thanasukarn's National Provider Identifier (NPI) is 1144674003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Thanasukarn's specialty?
- John Thanasukarn is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is John Thanasukarn located?
- John Thanasukarn's practice location on file with NPPES is 8530 Firestone Blvd, Downey, CA 90241-4926.
- What is John Thanasukarn's phone number?
- The practice phone number listed in the NPPES registry for John Thanasukarn is (562) 867-7999.
- Does John Thanasukarn accept Medicare?
- John Thanasukarn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Thanasukarn's NPI active?
- Yes — John Thanasukarn's NPI (1144674003) is active in the NPPES registry as of the last update on 2025-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.