Individual Healthcare Provider
David Hallmark Ryan, M.D.
Provider's NPPES record last updated: March 5, 2024
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1770784522
- Primary Specialty
- Psychiatry & Neurology — Addiction Medicine
- Practice Location
- Greenville, North Carolina
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 3:59 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Addiction Medicine
Allopathic & Osteopathic Physicians
A doctor of osteopathy board eligible/certified in the field of Psychiatry by the American Osteopathic Board of Neurology and Psychiatry is able to obtain a Certificate of Added Qualifications in the field of Addiction Medicine
Taxonomy code 2084A0401X Obstetrics & Gynecology
Allopathic & Osteopathic Physicians
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Taxonomy code 207V00000XGeneral Practice
Allopathic & Osteopathic Physicians
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Taxonomy code 208D00000X
Provider-Reported License Information
- Psychiatry & Neurology (North Carolina)
- 2011-00331
- Obstetrics & Gynecology (North Carolina)
- 2011-00331
- General Practice (North Carolina)
- 2011-00331
Practice Locations
Practice Location
905 Johns Hopkins Dr
Greenville, North Carolina 27834-2056
Phone: (252) 744-1406
Additional Practice Location
2160 Herbert Ct
Greenville, North Carolina 27834-3736
Phone: (252) 744-3850
Fax: (252) 744-3894
Record Information
- Enumeration Date
- May 30, 2007
- Provider's NPPES Record Last Updated
- March 5, 2024
- Certification Date
- March 5, 2024
- NPISignal NPPES Dataset
- August 2026
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