Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Thomas Ptak, MDPHD

Individual provider Diagnostic Radiology Physician · NPI 1467436394

Dr. Thomas Ptak, MDPHD practises Diagnostic Radiology in Worcester, Massachusetts. Qualified in 1990, 36 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 12 locations and accepts Medicare assignment. Licensed in Massachusetts, Maryland and Pennsylvania.

Years since qualifying
36
Licensed in
MA, MD, PA
In the registry since
2005
Specialties on file
4
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Practice location Address checks out

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 334-3850
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (11)

  • 22 S Greene St Rm S2a19, Baltimore, MD 21201-1544 — (410) 328-3477
  • 1201 Letort Springs Way, Carlisle, PA 17015-8011 — (717) 674-7600
  • 112 N 7th St, Chambersburg, PA 17201-1720 — (717) 262-4499
  • 169 Martin Ave, Ephrata, PA 17522-1734 — (717) 738-6414
  • 460 N Reading Rd, Ephrata, PA 17522-9606 — (717) 721-4840
  • 36 Robinhood Dr, Etters, PA 17319-9528 — (717) 388-7300
  • 147 Gettys St, Gettysburg, PA 17325-2534 — (717) 337-4207
  • 35 Erick Rd, Lancaster, PA 17601-3111 — (717) 690-0785
  • 252 S 4th St, Lebanon, PA 17042-6111 — (717) 270-7732
  • 14781 Wolfe Rd, New Freedom, PA 17349-9571 — (717) 326-1880
  • 35 Monument Rd Ste 201, York, PA 17403-5074 — (717) 812-4083

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence MD487489 (PA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 74590 (MA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence D0083946 (MD)
Neuroradiology Physician Taxonomy 2085N0700X · Licence D0083946 (MD)

Record details

NPI number1467436394
Entity typeIndividual (Type 1)
GenderMale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedDecember 5, 2005
Last updated in NPPESMay 21, 2026
Certification dateMay 21, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,045
Services billed 4,217 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Umass Memorial Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2467 clinicians in the practice; 12 are shown here.

Other providers in Worcester