IndividualActive
John Ernsberger, M.D.
NPI 1720330301 · Internal Medicine Physician · Anaheim, CA
John Ernsberger, M.D. is a Internal Medicine Physician provider in Anaheim, CA (NPI 1720330301).
Provider details
- NPI number
- 1720330301
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A43611 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(79/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
3055 W Orange Ave
Anaheim, CA 92804-3159
Phone: (714) 527-7559
Street-level locationGet directions
Mailing address
3055 W. Orange Ave
Anaheim, CA 92804
Registry dates
- Enumerated
- 2012-10-08
- Last updated
- 2012-10-08
Frequently asked questions
- What is John Ernsberger's NPI number?
- John Ernsberger's National Provider Identifier (NPI) is 1720330301, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ernsberger's specialty?
- John Ernsberger is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Ernsberger located?
- John Ernsberger's practice location on file with NPPES is 3055 W Orange Ave, Anaheim, CA 92804-3159.
- What is John Ernsberger's phone number?
- The practice phone number listed in the NPPES registry for John Ernsberger is (714) 527-7559.
- Is John Ernsberger's NPI active?
- Yes — John Ernsberger's NPI (1720330301) is active in the NPPES registry as of the last update on 2012-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.