Timothy Tirrell, MD, PHD
NPI 1386026128 · Pediatric Surgery Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Tirrell, MD, PHD is a Pediatric Surgery Physician provider in Palo Alto, CA (NPI 1386026128).
Provider details
- NPI number
- 1386026128
- Entity type
- Individual
- Primary specialty
- Pediatric Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A145045 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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)
- 200 W Arbor Dr # 8220San Diego, CA 92103-1911Phone: (619) 471-3859
Registry dates
- Enumerated
- 2015-06-28
- Last updated
- 2024-11-11
- Certified
- 2024-11-11
Frequently asked questions
- What is Timothy Tirrell's NPI number?
- Timothy Tirrell's National Provider Identifier (NPI) is 1386026128, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Tirrell's specialty?
- Timothy Tirrell is listed in the NPPES registry with a primary specialty of Pediatric Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Tirrell located?
- Timothy Tirrell's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Timothy Tirrell's phone number?
- The practice phone number listed in the NPPES registry for Timothy Tirrell is (650) 497-8000.
- Does Timothy Tirrell accept Medicare?
- Timothy Tirrell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Tirrell's NPI active?
- Yes — Timothy Tirrell's NPI (1386026128) is active in the NPPES registry as of the last update on 2024-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.