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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JASON IAN KASS MD, PHD
NPI 1194957589
Otolaryngology in Worcester, MA

Active since August 18, 2009PECOS EnrolledAccepts Medicare Assignment
123 SUMMER ST STE 300, WORCESTER, MA 01608(508) 368-3103(508) 368-3104 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 16, 2026, Jun 17, 2025, Dec 9, 2015 (3 updates tracked since 2015).

About Jason Ian Kass Md, Phd NPPES

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

JASON IAN KASS MD, PHD (NPI 1194957589) is an individual otolaryngology provider in Worcester, Massachusetts, licensed in Massachusetts (263693) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS, is affiliated with Milford Regional Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1194957589
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameJASON IAN KASSCredential: MD, PHD
Location Address123 SUMMER ST STE 300Worcester, MA 01608-1216
Mailing Address123 Summer St Ste 300Worcester, MA 01608-1216 · (508) 368-3103 · Fax (508) 368-3104
Phone(508) 368-3103
Fax(508) 368-3104
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 2009
Enumeration DateAugust 18, 2009
Last NPPES UpdateSeptember 16, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2026
✔ NPI 1194957589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in MA · 263693
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
123 SUMMER ST STE 300, Worcester, MA 01608
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1101 Cedar StMilford, MA 01757-1101 · Phone (508) 634-8164 · Fax (508) 634-5064
Location 224 Newton StSouthborough, MA 01772-1215 · Phone (508) 460-3291 · Fax (508) 481-3706
Location 355 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 334-4161

Other Identifiers 1

Medicaid110107429AMA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, 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

Jason Ian Kass 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 ID7719106442
PECOS Enrollment IDI20160121002217
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

5

Medicare enrollment records show Jason Kass reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Reliant Medical Group, Inc
2.3 mi
Family Medicine
5 NEPONSET ST
Worcester, MA 01606
  • Reassigned Medicare billing, Massachusetts enrollment
  • 718 clinicians in this Medicare group
NPI 1720017528 (508) 852-0600
Dana-Farber Cancer Institute, Inc.
36 mi
General Acute Care Hospital
450 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,026 clinicians in this Medicare group
NPI 1851333686 (617) 632-3000
Brigham & Womens Physicians Organization Inc
36 mi
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
NPI 1033535497 (617) 732-5500
Berkshire Faculty Services Inc
76 mi
Multi-Specialty
725 NORTH ST
Pittsfield, MA 01201
  • Reassigned Medicare billing, Massachusetts enrollment
  • 405 clinicians in this Medicare group
NPI 1548212939 (413) 447-2752
Medical Affiliates Of Cape Cod, Inc.
89 mi
Internal Medicine
27 PARK ST, GLEASON HOUSE
Hyannis, MA 02601
  • Reassigned Medicare billing, Massachusetts enrollment
  • 423 clinicians in this Medicare group
NPI 1770534927 (508) 862-5040

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 10

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
120 services88 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
72 services57 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
69 services62 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
63 services63 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
42 services42 patients
Evaluation of sleep-disordered breathing by examination of upper airway using an endoscope 42975
This procedure examines your upper airway for sleep-related breathing issues. An endoscope, a thin tube with a light and camera, is gently inserted through your nose. This allows a detailed view of your airway to identify any abnormalities that could disrupt your sleep.
17 services17 patients

Hospital Affiliations CMS Care Compare 2

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

Milford Regional Medical Center

Acute Care Hospitals · Milford, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220090
Location14 Prospect StreetMilford, MA 01757 · Worcester County
Emergency services Birthing friendly

St Vincent Hospital

Acute Care Hospitals · Worcester, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220176
Location123 Summer StreetWorcester, MA 01608 · Worcester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01608 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 3

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

MRS. MEREDITH KILLEEN LEONE PA-C
Physician Assistant
123 SUMMER ST STE 300
WORCESTER, MA 01608
Worcester County (508) 368-3103
EMILY BURAKIEWICZ AU.D
Audiologist
123 SUMMER ST STE 300
WORCESTER, MA 01608
Worcester County (508) 368-3103
DR. JAMES FX KENEALY MD
Specialist
123 SUMMER ST STE 300
WORCESTER, MA 01608
Worcester County (508) 368-3103

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 Jason Kass's NPI number?

The NPI number for Jason Kass is 1194957589. It was assigned to this individual provider in the NPPES registry on August 18, 2009.

Where is Jason Kass located?

Jason Kass practices at 123 Summer St Ste 300, Worcester, MA 01608. The listed phone number is (508) 368-3103.

What is Jason Kass's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Jason Kass enrolled in Medicare?

Yes. Jason Kass 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 Jason Kass's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Kass reassigns Medicare benefits to 5 organizations: Reliant Medical Group, Inc (Worcester, MA), Dana-Farber Cancer Institute, Inc. (Boston, MA), Brigham & Womens Physicians Organization Inc (Boston, MA), Berkshire Faculty Services Inc (Pittsfield, MA) and Medical Affiliates Of Cape Cod, Inc. (Hyannis, MA). 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 Jason Kass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jason Kass accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Jason Kass 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 Jason Kass affiliated with any hospitals?

According to CMS data, Jason Kass is affiliated with Milford Regional Medical Center and St Vincent Hospital.

When was this NPI record last updated?

The NPPES record for Jason Kass was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.