John Lonergan, MD
NPI 1427071158 · Adult Medicine Physician · Dallas, TX
Enrolled with Medicare as Order and Referring Only - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Lonergan, MD is a Adult Medicine Physician provider in Dallas, TX (NPI 1427071158).
Provider details
- NPI number
- 1427071158
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D31533 (MD)
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
- 2006-07-25
- Last updated
- 2007-07-13
Frequently asked questions
- What is John Lonergan's NPI number?
- John Lonergan's National Provider Identifier (NPI) is 1427071158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lonergan's specialty?
- John Lonergan is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Lonergan located?
- John Lonergan's practice location on file with NPPES is 4500 S Lancaster Rd, Dallas, TX 75216-7167.
- What is John Lonergan's phone number?
- The practice phone number listed in the NPPES registry for John Lonergan is (214) 857-1911.
- Does John Lonergan accept Medicare?
- John Lonergan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Lonergan's NPI active?
- Yes — John Lonergan's NPI (1427071158) is active in the NPPES registry as of the last update on 2007-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.