Gregory Robert James O'Neill, D.C.
Chiropractor · Lititz, PA
Gregory Robert James O'Neill, D.C. is a chiropractor with a practice address in Lititz, Pennsylvania, and NPI 1720323975, issued on Nov 29, 2012. Check the license (Pennsylvania DC010675, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Robert James O'Neill
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- DC010675 PA
Self-reported in NPPES; status is on the state search - Practice location
- 766 Lititz Pike, Lititz, PA 17543
- Phone
- (570) 238-4582
- Enumerated
- Nov 29, 2012
- Record last updated
- Sep 9, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140721000009); accepts Medicare assignment
- Medical or professional school
- New York Chiropractic College, 2012
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 3,934 in Pennsylvania → Look up another NPI →
Verify Gregory Robert James O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license DC010675Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Lititz Family Chiropractic PLLCLititz, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Robert James O'Neill among 3,934 chiropractor records in Pennsylvania
Gregory Robert James O'Neill, D.C. is one of 3,934 chiropractor records with a practice address in Pennsylvania. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 76% of them.
- NPI issued2012 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2012 · median 2000 among the 1,759 with a school on file
- Record last updated2014 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 chiropractor records list a practice address in Lititz
They are 9 of the 599 NPPES records with a practice address in Lititz, and 3,934 chiropractor records in Pennsylvania.
All 3,934 in Pennsylvania → Every provider in Lititz → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Antonio Giorgio, DCLititz, PA 175431124731864
- Christine Maclary, D.C.Lititz, PA 175431003947763
- Scott Maclary, D.C.Lititz, PA 175431134250897
- Matthew Mullins, DCLititz, PA 175431801072947
- Lee Pittsburg, D.C.Lititz, PA 175431770674939
- Clayton StitzelLititz, PA 175431841251931
- Donald Wagner, D.C.Lititz, PA 175431376540989
- Patty Ward, D.C.Lititz, PA 175431215901681
Common questions
What is Gregory Robert James O'Neill, D.C.'s NPI number?
Gregory Robert James O'Neill, D.C.'s National Provider Identifier (NPI) is 1720323975, issued on Nov 29, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Robert James O'Neill, D.C. located?
The NPPES record lists a practice address at 766 Lititz Pike, Lititz, PA, 17543. Phone: (570) 238-4582. Providers update this record themselves, so call before visiting.
How can I verify Gregory Robert James O'Neill, D.C.'s license?
NPPES lists Pennsylvania license number DC010675, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.