Thomas Ptak, MD PHD
Diagnostic Radiology (CMS) · Worcester, MA
At a glance
55 Lake Ave N, Worcester, MA 01655-0002
NPPES record updated May 21, 2026. Public records can lag behind changes at a practice.
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- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
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Check the official Medicare directory ↗Practice location
55 Lake Ave NWorcester, MA 01655-0002
Additional reported practice locations
252 S 4Th StLebanon, PA 170426111
Phone: 7172707732 35 Erick Rd
Lancaster, PA 176013111
Phone: 7176900785 460 N Reading Rd
Ephrata, PA 175229606
Phone: 7177214840 36 Robinhood Dr
Etters, PA 173199528
Phone: 7173887300 1201 Letort Springs Way
Carlisle, PA 170158011
Phone: 7176747600 35 Monument Rd Ste 201
York, PA 174035074
Phone: 7178124083 22 S Greene St Rm S2A19
Baltimore, MD 212011544
Phone: 4103283477
Fax: 4103281190 169 Martin Ave
Ephrata, PA 175221734
Phone: 7177386414 112 N 7Th St
Chambersburg, PA 172011720
Phone: 7172624499 14781 Wolfe Rd
New Freedom, PA 173499571
Phone: 7173261880 147 Gettys St
Gettysburg, PA 173252534
Phone: 7173374207
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1990
- CMS specialties
- Diagnostic Radiology
Practice groups
- Medical Imaging Of Lehigh Valley Pc
- Umass Memorial Medical Group Inc
- University Of Maryland Diagnostic Imaging Specialists P A
- Wellspan Medical Group
Reported hospital affiliations
- Gettysburg Hospital Gettysburg, PA
- Umass Memorial Healthalliance Hospitals Leominster, MA
- Umass Memorial Medical Center/University Campus Worcester, MA
- Wellspan Good Samaritan Hospital Lebanon, PA
- Wellspan York Hospital York, PA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Diagnostic Radiology (CMS)
- Taxonomy code
- 2085R0202X
- Enumeration date
- Dec 5, 2005
- Record updated
- May 21, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD PHD
Reported taxonomies and licenses
2085R0202X
License reported: 74590 MA
2085R0202X · Primary
License reported: MD487489 PA
2085R0202X
License reported: D0083946 MD
2085N0700X
License reported: D0083946 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
55 Lake Ave NWorcester, MA 01655-0002
- Phone
- (508) 334-3850
Mailing address
PO BOX 415348BOSTON, MA 022415348
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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