DR. THOMAS PTAK MD PHD
NPI 1467436394
Radiology - Diagnostic Radiology in Worcester, MA

Q: What is Thomas Ptak's NPI number?

The NPI number for Thomas Ptak is 1467436394. It was assigned to this individual provider in the NPPES registry on December 5, 2005.

Q: Where is Thomas Ptak located?

Thomas Ptak practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 334-3850.

Q: What is Thomas Ptak's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: Is Thomas Ptak enrolled in Medicare?

Yes. Thomas Ptak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Q: Which organizations bill Medicare for Thomas Ptak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Ptak reassigns Medicare benefits to 7 organizations: Umass Memorial Medical Group Inc (Worcester, MA), Umass Memorial Radiology Phys Serv (Worcester, MA), Medical Imaging Of Lehigh Valley PC (Allentown, PA), Wellspan Medical Group (Reinholds, PA), University Of Maryland Diagnostic Imaging Specialists P A (Aberdeen, MD) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Ptak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Q: What insurance does Thomas Ptak accept?

Health plans from Taro Health list Thomas Ptak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Q: Is Thomas Ptak affiliated with any hospitals?

According to CMS data, Thomas Ptak is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Medical Center/University Campus, Wellspan York Hospital, Gettysburg Hospital and Wellspan Good Samaritan Hospital.

Q: When was this NPI record last updated?

The NPPES record for Thomas Ptak was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 05, 2005PECOS EnrolledAccepts Medicare Assignment

55 LAKE AVE N, WORCESTER, MA 01655(508) 334-3850 Get Directions Write a Review

NPPES record last updated: May 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 21, 2026, Jan 27, 2026, May 9, 2024 and 2 more (5 updates tracked since 2016).

On this page

About Dr. Thomas Ptak Md Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. THOMAS PTAK MD PHD (NPI 1467436394) is an individual diagnostic radiology provider in Worcester, Massachusetts, licensed in Pennsylvania (MD487489) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and maintains 11 additional practice locations.

NPPES Registry Identity

NPI1467436394

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. THOMAS PTAKCredential: MD PHD

Location Address55 LAKE AVE NWorcester, MA 01655-0002

Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977

Phone(508) 334-3850

Sole ProprietorNo

Medical School CMSOtherGraduated 1990

Enumeration DateDecember 5, 2005

Last NPPES UpdateMay 21, 20265 updates tracked since enumeration

NPPES CertifiedMay 21, 2026

✔ NPI 1467436394 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in PA · MD487489✔ Licensed in MA · 74590✔ Licensed in MD · D0083946

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedRadiology · NeuroradiologyTaxonomy 2085N0700X · License D0083946 (MD)

55 LAKE AVE N, Worcester, MA 01655

Open in Google Maps ↗

Secondary Practice Locations 11

Location 1252 S 4th StLebanon, PA 17042-6111 · Phone (717) 270-7732

Location 235 Erick RdLancaster, PA 17601-3111 · Phone (717) 690-0785

Location 3460 N Reading RdEphrata, PA 17522-9606 · Phone (717) 721-4840

Location 436 Robinhood DrEtters, PA 17319-9528 · Phone (717) 388-7300

Location 51201 Letort Springs WayCarlisle, PA 17015-8011 · Phone (717) 674-7600

Location 635 Monument Rd Ste 201York, PA 17403-5074 · Phone (717) 812-4083

Location 722 S Greene St Rm S2A19Baltimore, MD 21201-1544 · Phone (410) 328-3477 · Fax (410) 328-1190

Location 8169 Martin AveEphrata, PA 17522-1734 · Phone (717) 738-6414

Location 9112 N 7th StChambersburg, PA 17201-1720 · Phone (717) 262-4499

Location 1014781 Wolfe RdNew Freedom, PA 17349-9571 · Phone (717) 326-1880

Location 11147 Gettys StGettysburg, PA 17325-2534 · Phone (717) 337-4207

Other Identifiers 2

Medicaid889007200MD

Medicaid091658433DC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thomas Ptak Md Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9537052766

PECOS Enrollment IDI20040203000533, I20171116001033, I20251015004839

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Thomas Ptak reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Umass Memorial Medical Group Inc

Same address

Internal Medicine

55 LAKE AVE N
Worcester, MA 01655

Reassigned Medicare billing, Massachusetts and Maryland enrollments
2,902 clinicians in this Medicare group

NPI 1760445373 (508) 334-1000

Umass Memorial Radiology Phys Serv

Same address

Diagnostic Radiology

55 LAKE AVE N # S2-824, RADIOLOGY DEPARTMENT ADMINISTRATION
Worcester, MA 01655

Reassigned Medicare billing, Massachusetts and Maryland enrollments
169 clinicians in this Medicare group

NPI 1639122096 (508) 334-7755

Medical Imaging Of Lehigh Valley PC

228 mi

Diagnostic Radiology

1200 S CEDAR CREST BLVD
Allentown, PA 18103

Reassigned Medicare billing, Maryland enrollment
4 clinicians in this Medicare group

NPI 1134178023 (610) 770-1606

Wellspan Medical Group

265 mi

Primary Care

30 W SWARTZVILLE RD
Reinholds, PA 17569

Reassigned Medicare billing, Pennsylvania enrollment
3,080 clinicians in this Medicare group

NPI 1629528211 (717) 484-4347

University Of Maryland Diagnostic Imaging Specialists P A

299 mi

Diagnostic Radiology

650 MCHENRY RD STE 1200
Aberdeen, MD 21001

Reassigned Medicare billing, Maryland and District of Columbia enrollments
Also billed through NPI 1154335487 (District of Columbia)
130 clinicians in this Medicare group

NPI 1295691426 (443) 843-5557

University Imaging Center, LLC

328 mi

Diagnostic Radiology

419 W REDWOOD ST, SUITE 110
Baltimore, MD 21201

Reassigned Medicare billing, Maryland enrollment
122 clinicians in this Medicare group

NPI 1245245307 (410) 328-9130

University Of Maryland Diagnostic Radiology, LLC

335 mi

Diagnostic Radiology

301 HOSPITAL DR
Glen Burnie, MD 21061

Reassigned Medicare billing, Maryland enrollment
123 clinicians in this Medicare group

NPI 1548803257 (410) 787-4633

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 40

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

622 services607 patients

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

543 services492 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

460 services450 patients

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

310 services306 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

271 services265 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

224 services222 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

195 services188 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

102 services101 patients

Ct scan of blood vessels of neck with contrast 70498

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

102 services101 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

101 services101 patients

Ct scan of middle spine without contrast 72128

A CT scan of the middle spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your mid-spine area. This scan helps doctors identify issues like fractures, tumors, or infections. No dye is used in this procedure.

83 services83 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

73 services72 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

52 services52 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

45 services45 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

44 services42 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

42 services41 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

41 services40 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

41 services37 patients

Ct scan of face without contrast 70486

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

38 services38 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

37 services36 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

34 services34 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

32 services30 patients

Ct scan of upper spine with contrast 72126

A CT scan of the upper spine with contrast is a diagnostic test. A special dye is used to highlight certain areas, providing clearer images. This helps detect issues such as injuries, infections, or tumors in the neck and upper back. It's a painless procedure.

30 services30 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

27 services27 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

26 services26 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

25 services22 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

24 services24 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

23 services19 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

22 services22 patients

Ct scan of middle spine with contrast 72129

A CT scan of the middle spine with contrast is a detailed imaging test. A special dye is used to highlight areas in your spine, providing clearer pictures. It helps doctors diagnose issues such as injuries, infections, or diseases in that area.

19 services19 patients

Ct scan of lower spine with contrast 72132

A CT scan of the lower spine with contrast is a non-invasive imaging test that uses X-ray technology and a contrast dye to create detailed pictures of your lower spine. It helps in diagnosing conditions like herniated discs, fractures, or tumors.

18 services18 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

17 services17 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

16 services15 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

15 services15 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

15 services15 patients

Computed tomography (ct) of brain blood flow, volume, and timing of flow analysis with contrast 0042T

A computed tomography (CT) of brain blood flow, volume, and timing of flow analysis with contrast is a non-invasive exam. It uses X-rays and a contrast material to create detailed images of your brain. It helps evaluate blood flow patterns and detect abnormalities like clots or blockages.

13 services13 patients

Ct scan of face with contrast 70487

A CT scan of the face with contrast is a non-invasive imaging test that uses X-rays and a contrast dye to create detailed images of your facial structures. The contrast dye helps to highlight specific areas, providing clearer images for more accurate diagnosis.

13 services13 patients

Mri scan of brain without contrast 70551

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

12 services12 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

12 services12 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Umass Memorial Healthalliance Hospitals

Acute Care Hospitals · Leominster, MA

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number220001

Location60 Hospital RoadLeominster, MA 01453 · Worcester County

Emergency services

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220163

Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County

Emergency services Birthing friendly

Wellspan York Hospital

Acute Care Hospitals · York, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390046

Location1001 South George StreetYork, PA 17403 · York County

Emergency services Birthing friendly

Gettysburg Hospital

Acute Care Hospitals · Gettysburg, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390065

Location147 Gettys StreetGettysburg, PA 17325 · Adams County

Emergency services Birthing friendly

Wellspan Good Samaritan Hospital

Acute Care Hospitals · Lebanon, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390066

Location252 South 4th StreetLebanon, PA 17042 · Lebanon County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01655 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$90.70 typical visit price

range $58.86 – $177.36

Typical copayment $22.67 (range $14.71 – $44.34)

Most-billed visit code 99203

Established Patient

$73.22 typical visit price

range $19.11 – $144.84

Typical copayment $18.30 (range $4.77 – $36.21)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions

Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…

Lower rates are better for this measure.

3%39 patients

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques

Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…

94%613 patients

Radiology: Stenosis Measurement in Carotid Imaging Reports

Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…

100%24 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HILLARY R. IRONS MD

Emergency Medicine

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 421-1400

MS. SHERINE MARY HASSEY-HALLIGAN NP

Nurse Practitioner

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-8585

MS. EILEEN A. DUHAMEL NP

Nurse Practitioner

55 LAKE AVE N, DEPARTMENT OF RADIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-2710

EWA HRYNISZYN CRNA

Nurse Anesthetist, Certified Registered

55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-3271

HELEN COPSEY PA-C

Physician Assistant

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-8585

DR. ADEPEJU GBADEBO CHAMPION M.D.

Internal Medicine

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-2731

SOWMYA KORAPATI

Internal Medicine (Hematology & Oncology)

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-3550

LAYLA FAKHRZADEH M.D.

Anesthesiology

55 LAKE AVE N, ANESTHESIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-3271

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Ptak's NPI number?

The NPI number for Thomas Ptak is 1467436394. It was assigned to this individual provider in the NPPES registry on December 5, 2005.

Where is Thomas Ptak located?

Thomas Ptak practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 334-3850.

What is Thomas Ptak's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Thomas Ptak enrolled in Medicare?

Yes. Thomas Ptak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Thomas Ptak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Ptak reassigns Medicare benefits to 7 organizations: Umass Memorial Medical Group Inc (Worcester, MA), Umass Memorial Radiology Phys Serv (Worcester, MA), Medical Imaging Of Lehigh Valley PC (Allentown, PA), Wellspan Medical Group (Reinholds, PA), University Of Maryland Diagnostic Imaging Specialists P A (Aberdeen, MD) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Ptak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Ptak accept?

Health plans from Taro Health list Thomas Ptak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Thomas Ptak affiliated with any hospitals?

According to CMS data, Thomas Ptak is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Medical Center/University Campus, Wellspan York Hospital, Gettysburg Hospital and Wellspan Good Samaritan Hospital.

When was this NPI record last updated?

The NPPES record for Thomas Ptak was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.