Frank De Mayo, M.D.
NPI 1861474520 · Orthopaedic Surgery Physician · Tracy, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frank De Mayo, M.D. is a Orthopaedic Surgery Physician provider in Tracy, CA (NPI 1861474520).
Provider details
- NPI number
- 1861474520
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G60003 (CA)
Specialties & taxonomies
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
20 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
Mailing address
Registry dates
- Enumerated
- 2005-11-17
- Last updated
- 2021-11-10
- Certified
- 2021-11-10
Frequently asked questions
- What is Frank De Mayo's NPI number?
- Frank De Mayo's National Provider Identifier (NPI) is 1861474520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frank De Mayo's specialty?
- Frank De Mayo is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Frank De Mayo located?
- Frank De Mayo's practice location on file with NPPES is 530 W Eaton Ave Ste E, Tracy, CA 95376-3455.
- What is Frank De Mayo's phone number?
- The practice phone number listed in the NPPES registry for Frank De Mayo is (209) 835-4888.
- Does Frank De Mayo accept Medicare?
- Frank De Mayo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frank De Mayo's NPI active?
- Yes — Frank De Mayo's NPI (1861474520) is active in the NPPES registry as of the last update on 2021-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.