David Hallmark Ryan, MD - Medicare Obstetrics/gynecology in Greenville, NC

David Hallmark Ryan, MD is a medicare enrolled "Psychiatry & Neurology - Addiction Medicine" physician in Greenville, North Carolina. He went to University Of Virginia School Of Medicine and graduated in 2007 and has 17 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice East Carolina University and his current practice location is 905 Johns Hopkins Dr, Greenville, North Carolina. You can reach out to his office (for appointments etc.) via phone at (252) 744-1406.

David Hallmark Ryan is licensed to practice in North Carolina (license number 2011-00331) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1770784522.

Contact Information

David Hallmark Ryan, MD
905 Johns Hopkins Dr,
Greenville, NC 27834-2056
(252) 744-1406
(252) 744-2419

Map and Direction




Physician's Profile

Full NameDavid Hallmark Ryan
GenderMale
SpecialityObstetrics/gynecology
Experience17 Years
Location905 Johns Hopkins Dr, Greenville, North Carolina
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • David Hallmark Ryan attended and graduated from University Of Virginia School Of Medicine in 2007
  NPI Data:
  • NPI Number: 1770784522
  • Provider Enumeration Date: 05/30/2007
  • Last Update Date: 03/05/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3779761044
  • Enrollment ID: I20110711000355

Medical Identifiers

Medical identifiers for David Hallmark Ryan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770784522NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084A0401XPsychiatry & Neurology - Addiction Medicine 2011-00331 (North Carolina)Primary
207V00000XObstetrics & Gynecology 2011-00331 (North Carolina)Secondary
208D00000XGeneral Practice 2011-00331 (North Carolina)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Vidant Medical CenterGreenville, NCHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
East Carolina University0244143246362

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. David Hallmark Ryan allows following entities to bill medicare on his behalf.
Entity NameEast Carolina University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972551919
PECOS PAC ID: 0244143246
Enrollment ID: O20031106000400
Entity NameKamm Mckenzie Obgyn Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316900780
PECOS PAC ID: 9537191788
Enrollment ID: O20050908000474
Entity NameDream Provider Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912952672
PECOS PAC ID: 3971662636
Enrollment ID: O20081110000595
Entity NameObhg North Carolina Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124300876
PECOS PAC ID: 3577721034
Enrollment ID: O20120301000114

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. David Hallmark Ryan is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
David Hallmark Ryan, MD
Po Box 751069,
Charlotte, NC 28275-1069

Ph: () -
David Hallmark Ryan, MD
905 Johns Hopkins Dr,
Greenville, NC 27834-2056

Ph: (252) 744-1406

Reviews and Comments


Psychiatry & Neurology Doctors in Greenville, NC

Dr. Khalid Abdelsalam Elnagar, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 905 Johns Hopkins Dr, Ecu Physicians Psychiatric Outpatient Center, Greenville, NC 27834
Phone: 252-744-1406    Fax: 252-744-4243
Elham Rahmani, MD, MPH
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Practice Location: 905 Johns Hopkins Dr, Greenville, NC 27834
Phone: 252-744-1406    Fax: 252-744-2419
Dr. Duard Frank Fleming Jr., M.D.
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Bertha Bowen Hambidge, MD
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Practice Location: 2577 W 5th St, Greenville, NC 27834
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Judith Salle Yongue, MD PA
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Practice Location: 107 Commerce St, Suite D, Greenville, NC 27858
Phone: 252-355-2768    Fax: 252-355-0403
Dr. Diana J Antonacci, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 905 Johns Hopkins Dr, Ecu Physicians Psychiatric Medicine- Outpatient Clinic, Greenville, NC 27834
Phone: 252-744-1406    Fax: 252-744-2419

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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