NPPES file of Aug 9, 2026

Nephrology Physician in Maryland

337 NPPES records list nephrology physician with a practice address in Maryland, 5.5 per 100,000 residents, the 3rd highest rate of 51. Baltimore and Bethesda have the most; each record links to the provider's NPI and the Maryland license search. Page 6 of 7.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RN0300X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Baltimore has the most, 121

  1. Baltimore121
  2. Bethesda26
  3. Clinton11
  4. Glen Burnie11
  5. Owings Mills11

Nephrology Physician records in Maryland

  1. Mary Pieprzak, M.D.Columbia, MD 210441326046202
  2. Steven Pollak, M.D.Greenbelt, MD 207701629006424
  3. Jeffrey Posner, M.D.Owings Mills, MD 211171326046210
  4. Kamyar Pournazari, MDAnnapolis, MD 214011528696861
  5. Raymond Pratt, MDBaltimore, MD 212021427481688
  6. Tihana Premuzic, M.D.Baltimore, MD 212011306296918
  7. Rudolf Pullmann, MDCatonsville, MD 212281164673588
  8. Ysmael Quiaoit, M.D.Oxon Hill, MD 207451437326501
  9. Hamid Rabb, M.D.Baltimore, MD 212871801833736
  10. Javed Rahmat, M.D.Bethesda, MD 208141295789386
  11. Tedine Ranich, M.D.Lutherville, MD 210931669470100
  12. Nagaratnam Ranjithan, M.D.Cumberland, MD 215021245284355
  13. Babak Razi, MDRiverdale, MD 207371942345970
  14. Manoj Reddy, MDClinton, MD 207351508814443
  15. Rohan Rengen, D.O.Frederick, MD 217031609067792
  16. Branislav Romanic, MDFrederick, MD 217041649239153
  17. Eli Roza, MDHagerstown, MD 217421184611444
  18. Mario Rubin, M.D.Baltimore, MD 212011710935044
  19. Jonathan Rudick, MDGreenbelt, MD 207701124083704
  20. John Sadler, M.D.Baltimore, MD 212011235100850
  21. Shallu Sahore, D.O.Baltimore, MD 212241841588985
  22. Tarek Salkini, M.D.Towson, MD 212041851477392
  23. Daniel Salzberg, M.D.Baltimore, MD 212011255371373
  24. George Samaras, MDAnnapolis, MD 214011245217116
  25. Kiran Samindla, M.DFrederick, MD 217021932300845
  26. Thibin Santha, M.D.Huntingtown, MD 206391144241068
  27. Sundus Sardar, MDSalisbury, MD 218011972239291
  28. Philip Schwartz, M.D.Rockville, MD 208521750389128
  29. Gail Seiken, M.D.Bethesda, MD 208141003860198
  30. Stephen Seliger, M.D.Baltimore, MD 212011447290671
  31. Kamal Salah H Sewaralthahab, M.DTimonium, MD 210931689939035
  32. Bayinnah Shabazz, M.D.Glen Burnie, MD 210611104824465
  33. Samir ShabshabClinton, MD 207351669430823
  34. Harshal Shah, D.OClinton, MD 207351780094219
  35. Mitesh Shah, D.O.Clinton, MD 207351649546995
  36. Neal Shah, M.D.Baltimore, MD 212371003251927
  37. Aiman Shammas, MDBaltimore, MD 212371710184957
  38. Steve Shen, MD FACPBaltimore, MD 212011417974015
  39. Irfan Shukrullah, M.DBaltimore, MD 212371528200201
  40. Muhammad Siddiqi, MDRockville, MD 208541679151450
  41. Ravinder Sindhwani, MDWhite Plains, MD 206951134162167
  42. Amit Singh, M.D.Baltimore, MD 212011881884179
  43. Novia Singh, DOBaltimore, MD 212021356738835
  44. Stephen Sozio, M.D., M.H.S.Baltimore, MD 212241558412288
  45. David Spector, MDBaltimore, MD 212241992740997
  46. Christopher Sperati, M.D.Baltimore, MD 212871255361028
  47. Nityasree Srialluri, MDBaltimore, MD 212871710411699
  48. Robert Star, M.D.Bethesda, MD 208921780937730
  49. Ian Stewart, MDBethesda, MD 208891568585388
  50. Barry Straube, M.D.Baltimore, MD 212301245393925

Source: CMS NPPES, primary taxonomy 207RN0300X: records by practice city and the list of records, file of Aug 9, 2026.

Maryland ranks 3 of 51 per resident

  1. District of Columbia11.6
  2. Massachusetts6.0
  3. Maryland5.5
  4. New York5.4
  5. Delaware5.0
  6. 50 states and D.C.4.0

Source: CMS NPPES, primary taxonomy 207RN0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

What the count covers

337 NPPES records list nephrology physician (207RN0300X) as their primary taxonomy with a practice address in Maryland: 5.5 per 100,000 residents against 4 nationally (50 states and D.C.). Baltimore has 121 of them (36%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Virginia327
  2. Michigan376
  3. Missouri285
  4. Washington284

States with a similar rate per 100,000

  1. New York5.4
  2. Delaware5.0
  3. Pennsylvania5.0
  4. Massachusetts6.0

The largest states

  1. California1,468
  2. Texas1,159
  3. New York1,049
  4. Florida840
  5. Pennsylvania651

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record 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.