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DAVID HALLMARK RYAN M.D.
NPI 1770784522
Psychiatry & Neurology - Addiction Medicine in Greenville, NC

Active since May 30, 2007PECOS EnrolledAccepts Medicare Assignment
98.33/100
CMS Quality Rating
905 JOHNS HOPKINS DR, GREENVILLE, NC 27834(252) 744-1406(252) 744-2419 Get Directions Write a Review

NPPES record last updated: March 5, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 5, 2024, Aug 9, 2022, Apr 24, 2020 (3 updates tracked since 2020).

About David Hallmark Ryan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DAVID HALLMARK RYAN M.D. (NPI 1770784522) is an individual addiction medicine provider in Greenville, North Carolina, licensed in North Carolina (2011-00331) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Ecu Health Medical Center, and maintains a secondary practice location in Greenville.

NPPES Registry Identity

NPI1770784522
Entity TypeIndividualMale
Primary Taxonomy2084A0401X
Provider Legal NameDAVID HALLMARK RYANCredential: M.D.
Location Address905 JOHNS HOPKINS DRGreenville, NC 27834-2056
Mailing AddressPo Box 751069Charlotte, NC 28275-1069
Phone(252) 744-1406
Fax(252) 744-2419
Sole ProprietorNo
Medical School CMSUniversity Of Virginia School Of MedicineGraduated 2007
Enumeration DateMay 30, 2007
Last NPPES UpdateMarch 5, 20243 updates tracked since enumeration
NPPES CertifiedMarch 5, 2024
✔ NPI 1770784522 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084A0401X
License✔ Licensed in NC · 2011-00331
Definition
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
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 2011-00331 (NC)
Also ListedGeneral PracticeTaxonomy 208D00000X · License 2011-00331 (NC)
905 JOHNS HOPKINS DR, Greenville, NC 27834
Open in Google Maps ↗

Secondary Practice Location 1

Location 12160 Herbert CtGreenville, NC 27834-3736 · Phone (252) 744-3850 · Fax (252) 744-3894

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC, Cigna Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

David Hallmark Ryan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3779761044
PECOS Enrollment IDI20110711000355
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

5

Medicare enrollment records show David Ryan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Vidant Medical Group LLC
0.8 mi
Multi-Specialty
2100 STANTONSBURG RD
Greenville, NC 27834
  • Reassigned Medicare billing, North Carolina enrollment
  • 1,653 clinicians in this Medicare group
NPI 1477648731 (252) 847-2181
East Carolina University
0.8 mi
Orthodontics and Dentofacial Orthopedics
1851 MACGREGOR DOWNS RD
Greenville, NC 27834
  • Reassigned Medicare billing, North Carolina enrollment
  • 930 clinicians in this Medicare group
NPI 1316324411 (252) 737-7838
Dream Provider Care Services
21 mi
Mental Health
216 STEWART PKWY
Washington, NC 27889
  • Reassigned Medicare billing, North Carolina enrollment
  • 10 clinicians in this Medicare group
NPI 1912952672 (252) 946-0585
Kamm Mckenzie Obgyn, PLLC
70 mi
Obstetrics & Gynecology
3805 COMPUTER DRIVE
Raleigh, NC 27609
  • Reassigned Medicare billing, North Carolina enrollment
  • 16 clinicians in this Medicare group
NPI 1316900780 (919) 781-6200
Obhg North Carolina, P.C.
195 mi
Obstetrics & Gynecology
1000 BLYTHE BLVD
Charlotte, NC 28203
  • Reassigned Medicare billing, North Carolina enrollment
  • Medicare enrollment name: Obhg North Carolina PC
  • 196 clinicians in this Medicare group
NPI 1124300876 (800) 967-2289

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ecu Health Medical Center

Acute Care Hospitals · Greenville, NC
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number340040
Location2100 Stantonsburg RdGreenville, NC 27834 · Pitt County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27834 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$125.01 typical visit price
range $54.12 – $165.09
Typical copayment $31.25 (range $13.53 – $41.27)
Most-billed visit code 99204
Established Patient
$95.94 typical visit price
range $17.21 – $134.61
Typical copayment $23.98 (range $4.30 – $33.65)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.33/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.93
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELHAM RAHMANI MD, MPH
Psychiatry & Neurology (Psychiatry)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
COLIN MARK EVANS MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
ALICIA N. WOODS LCSW
Social Worker (Clinical)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
SAMANTHA KARLENE BROWN CUNNINGHAM PHD
Psychologist
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
SEVDALINA METODIEVA DABOVA-MISSOVA MD
Psychiatry & Neurology (Addiction Medicine)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
CASSANDRA LEVELLE DIXON PHD, LCMHC
Counselor (Mental Health)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
TAYLOR JACKSON RN
Registered Nurse (Psychiatric/Mental Health)
905 JOHNS HOPKINS DR
GREENVILLE, NC 27834
Pitt County (252) 744-1406
DR. DIANA J ANTONACCI M.D.
Psychiatry & Neurology (Psychiatry)
905 JOHNS HOPKINS DR, ECU PHYSICIANS PSYCHIATRIC MEDICINE- OUTPATIENT CLINIC
GREENVILLE, NC 27834
Pitt County (252) 744-1406

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is David Ryan's NPI number?

The NPI number for David Ryan is 1770784522. It was assigned to this individual provider in the NPPES registry on May 30, 2007.

Where is David Ryan located?

David Ryan practices at 905 Johns Hopkins Dr, Greenville, NC 27834. The listed phone number is (252) 744-1406.

What is David Ryan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Medicine, with taxonomy code 2084A0401X.

Is David Ryan enrolled in Medicare?

Yes. David Ryan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for David Ryan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Ryan reassigns Medicare benefits to 5 organizations: Vidant Medical Group LLC (Greenville, NC), East Carolina University (Greenville, NC), Dream Provider Care Services (Washington, NC), Kamm Mckenzie Obgyn, PLLC (Raleigh, NC) and Obhg North Carolina, P.C. (Charlotte, NC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Ryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does David Ryan accept?

Health plans from Blue Cross and Blue Shield of NC and Cigna Healthcare list David Ryan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is David Ryan affiliated with any hospitals?

According to CMS data, David Ryan is affiliated with Ecu Health Medical Center.

When was this NPI record last updated?

The NPPES record for David Ryan was last updated on March 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.