Robert John Postlethwaite, MD
Gastroenterology Physician · Fairfax, VA
Robert John Postlethwaite, MD is a gastroenterology physician with a practice address in Fairfax, Virginia, and NPI 1457988255, issued on Mar 24, 2020. Check the license (Virginia 0101289327, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Robert John Postlethwaite
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 0101289327 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3028 Javier RD Ste 300, Fairfax, VA 22031
- Phone
- (703) 698-8960
- Enumerated
- Mar 24, 2020
- Record last updated
- Jun 30, 2026
- Fax
- (703) 828-0961
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 536 in Virginia → Look up another NPI →
Also registered at 3028 Javier RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Bastawrous, FNP-CFamily Nurse Practitioner1467275842
- Emily Bravo, PA-CMedical Physician Assistant1659880532
- Mindy Chen, MDGastroenterology Physician1750840831
- Kristina Choi, PA-CPhysician Assistant1528735719
- Anastasia Grebeck, PA-CPhysician Assistant1972081164
- Wendy Holt, APRNNurse Practitioner1346407574
Verify Robert John Postlethwaite in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101289327Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average gastroenterology physician in 2024
90 Medicare Part D claims for 56 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Gavilyte-G14 claims
- Omeprazole12 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.
Robert John Postlethwaite among 536 gastroenterology physician records in Virginia
Robert John Postlethwaite, MD is one of 536 gastroenterology physician records with a practice address in Virginia. 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 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, 4% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Virginia
There are 536 gastroenterology physician records in Virginia.
All 536 in Virginia → Every provider in Fairfax → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mahmood Abedi, MDFairfax, VA 220311649255233
- Tonya Adams, M.D.Fairfax, VA 220311861472862
- Nader Balba, MDFairfax, VA 220311013949254
- Lucille Beck, M.DFairfax, VA 220311356332548
- Ali Fazel, M.D.Fairfax, VA 220311225024748
- Ahmed Hegab, M.D.Fairfax, VA 220311699793372
- Behzad Kalaghchi, M.D.Fairfax, VA 220311356337158
- Asma KhapraFairfax, VA 220311770702011
Common questions
What is Robert John Postlethwaite, MD's NPI number?
Robert John Postlethwaite, MD's National Provider Identifier (NPI) is 1457988255, issued on Mar 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Robert John Postlethwaite, MD located?
The NPPES record lists a practice address at 3028 Javier RD Ste 300, Fairfax, VA, 22031. Phone: (703) 698-8960. Providers update this record themselves, so call before visiting.
How can I verify Robert John Postlethwaite, MD's license?
NPPES lists Virginia license number 0101289327, 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 Robert John Postlethwaite, MD prescribe under Medicare Part D?
In 2024, Robert John Postlethwaite, MD had 90 Medicare Part D claims for 56 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.