Waldo Ferrer, MD
NPI 1881772978 · Internal Medicine Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Waldo Ferrer, MD is a Internal Medicine Physician provider in Antioch, CA (NPI 1881772978).
Provider details
- NPI number
- 1881772978
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A89359 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2021-11-30
Frequently asked questions
- What is Waldo Ferrer's NPI number?
- Waldo Ferrer's National Provider Identifier (NPI) is 1881772978, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Waldo Ferrer's specialty?
- Waldo Ferrer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Waldo Ferrer located?
- Waldo Ferrer's practice location on file with NPPES is 3400 Delta Fair Blvd, Antioch, CA 94509-4004.
- What is Waldo Ferrer's phone number?
- The practice phone number listed in the NPPES registry for Waldo Ferrer is (925) 779-5000.
- Does Waldo Ferrer accept Medicare?
- Waldo Ferrer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Waldo Ferrer's NPI active?
- Yes — Waldo Ferrer's NPI (1881772978) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.