Robert C. Greenwell, M.D.
Nephrology Physician · Baltimore, MD
Robert C. Greenwell, M.D. is a nephrology physician with a practice address in Baltimore, Maryland, and NPI 1710985148, issued on Jul 11, 2005. Check the license (Maryland D34334, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Robert C. Greenwell
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- D34334 MD
Self-reported in NPPES; status is on the state search - Practice location
- 301 Saint Paul PL, Baltimore, MD 21202
- Phone
- (410) 332-1111
- Enumerated
- Jul 11, 2005
- Record last updated
- Jan 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (410) 332-1752
- Medicaid ID
- 441381400 MD
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 337 in Maryland → Look up another NPI →
Also registered at 301 Saint Paul PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert C. Greenwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D34334Check 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
14 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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 C. Greenwell among 337 nephrology physician records in Maryland
Robert C. Greenwell, M.D. is one of 337 nephrology physician records with a practice address in Maryland. 80% 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, 85% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2016 · 56% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Maryland
There are 337 nephrology physician records in Maryland.
All 337 in Maryland → Every provider in Baltimore → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Anita Pasumarthy, M.D.Baltimore, MD 212021497792394
- Raymond Pratt, MDBaltimore, MD 212021427481688
- Novia Singh, DOBaltimore, MD 212021356738835
- Neil Agarwal, M.D.Baltimore, MD 212011699157230
- Hiba Ahmed, M.DBaltimore, MD 212011689933509
- Jonathan Bolanos, M.D.Baltimore, MD 212011952507261
- Valeriu Cebotaru, MDBaltimore, MD 212011326220468
- Jagman Chahal, M.D.Baltimore, MD 212011356600738
Common questions
What is Robert C. Greenwell, M.D.'s NPI number?
Robert C. Greenwell, M.D.'s National Provider Identifier (NPI) is 1710985148, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert C. Greenwell, M.D. located?
The NPPES record lists a practice address at 301 Saint Paul PL, Baltimore, MD, 21202. Phone: (410) 332-1111. Providers update this record themselves, so call before visiting.
How can I verify Robert C. Greenwell, M.D.'s license?
NPPES lists Maryland license number D34334, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert C. Greenwell, M.D. prescribe under Medicare Part D?
In 2024, Robert C. Greenwell, M.D. had 14 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.