NPPES file of Aug 9, 2026

Clinical Pathology/Laboratory Medicine Physician in Massachusetts

52 NPPES records list clinical pathology/laboratory medicine physician with a practice address in Massachusetts, 0.7 per 100,000 residents, the 8th highest rate of 49. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 1 of 2.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207ZP0105X · method

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

Boston has the most, 35

  1. Boston35
  2. Worcester6
  3. Burlington2
  4. Roxbury Crossing2
  5. Belmont1

Clinical Pathology/Laboratory Medicine Physician records in Massachusetts

  1. Gyorgy Abel, M.D.Burlington, MA 018051831282383
  2. Ramy ArnaoutChestnut Hill, MA 024671033307384
  3. Jeffrey Arnold, M.D.Boston, MA 021111255611661
  4. Karoly Balogh, MDRoxbury Crossing, MA 021201215916747
  5. Roger Belizaire, MD, PHDBrookline, MA 024461548603269
  6. Richard Benjamin, M.D.Boston, MA 021151861598179
  7. Anders Berg, M. D., PH. D.Boston, MA 021151730251950
  8. Bradley Bernstein, M.D.Boston, MA 021381891816955
  9. Stephen Blacklow, M.D.Boston, MA 021151982662805
  10. Steve Bogen, M.D., PH.D.Boston, MA 021111598738551
  11. Uriel Bulow, MDBoston, MA 021141902556087
  12. Jameson Dahlin, M.D., PH.D.Boston, MA 021151831542554
  13. Eric Grewal, MDBoston, MA 021141669121943
  14. Richard Haspel, M.D.Boston, MA 022151396782918
  15. Sajjad Hassan, MDSpringfield, MA 011071174999197
  16. Jihad Hayek, MDRoxbury Crossing, MA 021201568441749
  17. Lauren Hiestand, M.D.Worcester, MA 016551346224276
  18. John Higgins, M.D.Boston, MA 021141639241409
  19. Christopher Ianelli, M.D.Belmont, MA 024781518101914
  20. Petr Jarolim, MD PHDBoston, MA 021151689690588
  21. Loren Joseph, MDBoston, MA 022151487706164
  22. Jae Joung, MD PHDBoston, MA 021141386628345
  23. James Kirby, M.D.Boston, MA 022151902843667
  24. Erik KlontzBoston, MA 021141417533977
  25. Vikram Kumar, MDBoston, MA 021151962574871
  26. Massimo Loda, MDBoston, MA 021151245306695
  27. Ileana Lopez Plaza, MDBoston, MA 021111396727715
  28. Mara Lorenzi, MDBoston, MA 021141023099470
  29. Gifford Lum, M.D.Boston, MA 021321144244849
  30. Barbarajean Magnani, M.D., PH.D.Boston, MA 021181538132923
  31. Diana Mandelker, MD, PHDBoston, MA 021151679857627
  32. Alexander McAdam, MD, PHDBoston, MA 021151205847795
  33. Stacy Melanson, MD PHDBoston, MA 021151346299450
  34. Matthew Meyerson, M.D.Boston, MA 021151205979697
  35. Michael Mitchell, MDWorcester, MA 016551255315115
  36. Karim Ouahchi, M.D.Boston, MA 021151518030766
  37. Amir Rahemtulla, M.D.Salem, MA 019701639146426
  38. Dmitry Ratner, MD, PHDBoston, MA 022151790281780
  39. Igor Rozenvald, M.D.Worcester, MA 016551568400851
  40. David Sacks, M.D.Boston, MA 021151013955335
  41. Jeffrey Saenger, M.D.Worcester, MA 016081710952429
  42. Habib Sioufi, MDMarlborough, MA 017521639151574
  43. Timothy Skelton, M.D. PH.D.Burlington, MA 018051114027257
  44. Steven Sloan, MDBoston, MA 021151568471720
  45. Agata Smogorzewska, MD PHDBoston, MA 021141669664710
  46. Louis Snyder, MDWorcester, MA 016551629050810
  47. Christopher Stowell, MH PHDBoston, MA 021141316938665
  48. Milenko Tanasijevic, MD MBABoston, MA 021151255397428
  49. Umarani Thamaraichelvan, M.D.Boston, MA 015831972753838
  50. Dongsheng Xu, M.D.Boston, MA 021181144293101

Source: CMS NPPES, primary taxonomy 207ZP0105X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 8 of 49 per resident

  1. South Dakota1.3
  2. New Mexico1.3
  3. Connecticut0.8
  4. Massachusetts0.7
  5. Washington0.7
  6. Pennsylvania0.7
  7. 50 states and D.C.0.4

Source: CMS NPPES, primary taxonomy 207ZP0105X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

36.5% of these records appear in a Medicare file, against 49.3% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Massachusetts36.5%
  2. United States49.3%

Clinical Pathology/Laboratory Medicine Physician records in Massachusetts, measured

  • In a Medicare file19 of 52 · 36.5% here, 49.3% nationally
  • In the CMS Doctors and Clinicians file18 · 34.6% here, 41.7% nationally
  • Not updated in five years or more35 · 67.3% here, 65.6% nationally
  • Median graduation year1998 · the 18 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207ZP0105X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

52 NPPES records list clinical pathology/laboratory medicine physician (207ZP0105X) as their primary taxonomy with a practice address in Massachusetts: 0.7 per 100,000 residents against 0.4 nationally (50 states and D.C.). Boston has 35 of them (67%).

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. Washington58
  2. Illinois63
  3. Arizona40
  4. Indiana40

States with a similar rate per 100,000

  1. Pennsylvania0.7
  2. Connecticut0.8
  3. Iowa0.5
  4. New York0.5

The largest states

  1. California131
  2. New York102
  3. Pennsylvania86
  4. Florida83
  5. Wisconsin80

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.