Robert E. Greenspan, MD
Nephrology Physician · Fairfax, VA
Robert E. Greenspan, MD is a nephrology physician with a practice address in Fairfax, Virginia, and NPI 1811995467, issued on Jul 8, 2005. Check the license (Virginia 0101029580, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Robert E. Greenspan
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 0101029580 VA
Self-reported in NPPES; status is on the state search - Practice location
- 13135 Lee Jackson Memorial Hwy, Fairfax, VA 22033
- Phone
- (703) 961-0488
- Enumerated
- Jul 8, 2005
- Record last updated
- Aug 11, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (703) 961-0480
- Medicaid ID
- 006087752 VA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 327 in Virginia → Look up another NPI →
Also registered at 13135 Lee Jackson Memorial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nowal Al Baqui, MDNephrology Physician1639432198
- Ali Assefi, MDNephrology Physician1275531832
- Susan Baum, REGISTERED DIETITIANRegistered Dietitian1770621344
- Joanna Casey, FNP-BCFamily Nurse Practitioner1265773824
- Lisa Degilio, NPAdult Health Nurse Practitioner1710985775
- Kourosh Dibadj, M.D.Nephrology Physician1487716593
Verify Robert E. Greenspan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101029580Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nephrology physician in 2024
17 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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 E. Greenspan among 327 nephrology physician records in Virginia
Robert E. Greenspan, MD is one of 327 nephrology 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2016 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Virginia
There are 327 nephrology physician records in Virginia.
All 327 in Virginia → Every provider in Fairfax → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ali Assefi, MDFairfax, VA 220331275531832
- Kourosh Dibadj, M.D.Fairfax, VA 220331487716593
- Jhumka Ghosh-Narang, M.D.Fairfax, VA 220331619060126
- Magnus Ikhinmwin, MDFairfax, VA 220331770681942
- Robert Mackow, MDFairfax, VA 220331942208368
- David Mahoney, MDFairfax, VA 220331548268048
- Ahmadshah Mirkhel, M.D.Fairfax, VA 220331790729317
- Franco Musio, MDFairfax, VA 220331639177215
Common questions
What is Robert E. Greenspan, MD's NPI number?
Robert E. Greenspan, MD's National Provider Identifier (NPI) is 1811995467, issued on Jul 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert E. Greenspan, MD located?
The NPPES record lists a practice address at 13135 Lee Jackson Memorial Hwy, Fairfax, VA, 22033. Phone: (703) 961-0488. Providers update this record themselves, so call before visiting.
How can I verify Robert E. Greenspan, MD's license?
NPPES lists Virginia license number 0101029580, 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 E. Greenspan, MD prescribe under Medicare Part D?
In 2024, Robert E. Greenspan, MD had 17 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. 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.