Gwilym Parry, MD
Internal Medicine Physician · Reston, VA
Gwilym Parry, MD is an internal medicine physician with a practice address in Reston, Virginia, and NPI 1508961962, issued on Sep 13, 2006. Check the license (Virginia 0101041163, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Gwilym Parry
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101041163 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1830 Town Center Dr Ste 207, Reston, VA 20190
- Phone
- (703) 435-2227
- Enumerated
- Sep 13, 2006
- Record last updated
- Aug 18, 2023
- Fax
- (703) 435-7856
- Medicaid ID
- 6043518 VA
- Medicare enrollment
- Enrolled (PECOS I20081210000025); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1981
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1830 Town Center Dr Ste 207
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tessa Cholmondeley, MDInternal Medicine Physician1124132873
Verify Gwilym Parry in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101041163Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,914 Medicare Part D claims for 154 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium157 claims
- Levothyroxine Sodium92 claims
- Hydrochlorothiazide72 claims
- Alprazolam70 claims
- Amlodipine Besylate53 claims
- Citalopram Hbr52 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.
56 internal medicine physician records list a practice address in Reston
They are 56 of the 1,676 NPPES records with a practice address in Reston, and 3,599 internal medicine physician records in Virginia.
All 56 in Reston → All 3,599 in Virginia → Every provider in Reston →
Other internal medicine physician records in Virginia
- Caren Aaron, M.D.Martinsville, VA1477538734
- Mark Aarons, M.D.Arlington, VA1730371774
- Estefania Abasolo Lopez, MDManassas, VA1043899545
- Salma Abbas, MDRichmond, VA1427303387
- Amir AbbasiRichmond, VA1851233548
- Gohar Abbasi, MDChester, VA1134198187
- Mustafa Abbasi, MDAlexandria, VA1316019912
- Layla Abdal Hussain, MDWoobridge, VA1801036942
- Marwa Abdelfattah, M.D.Culpeper, VA1225251572
- Ramy Abdelfattah, M.D.Fredericksburg, VA1437525748
Common questions
What is Gwilym Parry, MD's NPI number?
Gwilym Parry, MD's National Provider Identifier (NPI) is 1508961962, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gwilym Parry, MD located?
The NPPES record lists a practice address at 1830 Town Center Dr Ste 207, Reston, VA, 20190. Phone: (703) 435-2227. Providers update this record themselves, so call before visiting.
How can I verify Gwilym Parry, MD's license?
NPPES lists Virginia license number 0101041163, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gwilym Parry, MD prescribe under Medicare Part D?
In 2024, Gwilym Parry, MD had 1,914 Medicare Part D claims for 154 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions 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.