David Hallmark Ryan, M.D.
Addiction Medicine (Psychiatry & Neurology) Physician · Greenville, NC
David Hallmark Ryan, M.D. is an addiction medicine (psychiatry & neurology) physician with a practice address in Greenville, North Carolina, and NPI 1770784522, issued on May 30, 2007. Check the license (North Carolina 2011-00331, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- David Hallmark Ryan
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Psychiatry & Neurology) Physician 2084A0401X
- License number
- 2011-00331 NC
Self-reported in NPPES; status is on the state search - Practice location
- 905 Johns Hopkins Dr, Greenville, NC 27834
- Phone
- (252) 744-1406
- Enumerated
- May 30, 2007
- Record last updated
- Mar 5, 2024
- Fax
- (252) 744-2419
- Medicare enrollment
- Enrolled (PECOS I20110711000355); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest addiction medicine (psychiatry & neurology) physician records → All 26 in North Carolina → Look up another NPI →
Also registered at 905 Johns Hopkins Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Archana Rao Adikey, M.B.B.SPsychiatry Physician1275094096
- Vivek Anand, M.D.Psychiatry Physician1639308901
- Diana Antonacci, M.D.Psychiatry Physician1114923620
- Melanie BarwickClinical Social Worker1437001310
- Samantha Brown Cunningham, PHDPsychologist1073965349
- Rahimallah Burnett, MSW, LCSWClinical Social Worker1548515893
Verify David Hallmark Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2011-00331Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average addiction medicine (psychiatry & neurology) physician in 2024
187 Medicare Part D claims for 34 beneficiaries, against an average of 870 among the 264 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone80 claims
- Alyacen13 claims
- Fluoxetine Hcl12 claims
- Mirtazapine11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $111.11
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 142 providers of this specialty with any payment received $4,513.66 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- East Carolina UniversityGreenville, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Hallmark Ryan among 26 addiction medicine (psychiatry & neurology) physician records in North Carolina
David Hallmark Ryan, M.D. is one of 26 addiction medicine (psychiatry & neurology) physician records with a practice address in North Carolina. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 27% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2007 · median 1986 among the 11 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084A0401X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Psychiatry & Neurology) Physician providers in North Carolina
There are 26 addiction medicine (psychiatry & neurology) physician records in North Carolina.
All 26 in North Carolina → Every provider in Greenville → Addiction Medicine (Psychiatry & Neurology) Physician nationwide →
The 8 addiction medicine (psychiatry & neurology) physician records with the nearest ZIP codes
- Sevdalina Dabova-Missova, MDGreenville, NC 278341104831072
- Gary Leonhardt, M.D.Greenville, NC 278341538183942
- Johnny Williams, M.D.Greenville, NC 278341972697746
- Dean Drosnes, M.D.Raleigh, NC 276091821327420
- Robyn Jordan, MDRaleigh, NC 276071336409317
- Emily Rayes-Prince, M.D.Monroe, NC 281101487683454
- Hien Nguyen, M.D.Apex, NC 275231124446430
- George Bartels, M.D.Cary, NC 275181841480100
Common questions
What is David Hallmark Ryan, M.D.'s NPI number?
David Hallmark Ryan, M.D.'s National Provider Identifier (NPI) is 1770784522, issued on May 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David Hallmark Ryan, M.D. located?
The NPPES record lists a practice address at 905 Johns Hopkins Dr, Greenville, NC, 27834. Phone: (252) 744-1406. Providers update this record themselves, so call before visiting.
How can I verify David Hallmark Ryan, M.D.'s license?
NPPES lists North Carolina license number 2011-00331, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Hallmark Ryan, M.D. prescribe under Medicare Part D?
In 2024, David Hallmark Ryan, M.D. had 187 Medicare Part D claims for 34 beneficiaries; the average among addiction medicine (psychiatry & neurology) physician prescribers was 870. Part D covers Medicare prescriptions only.
What is David Hallmark Ryan, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.