1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Otolaryngology
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KENNETH M GRUNDFAST M.D.
NPI 1336101054
Otolaryngology in Boston, MA

Active since April 06, 2006PECOS EnrolledAccepts Medicare Assignment
830 HARRISON AVE, STE 1400, BOSTON, MA 02118(617) 638-8124(617) 414-4953 Get Directions Write a Review

NPPES record last updated: August 25, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Aug 25, 2026, Nov 3, 2023, Jul 22, 2021 and 2 more (5 updates tracked since 2017).

About Kenneth M Grundfast M.d. NPPES

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

KENNETH M GRUNDFAST M.D. (NPI 1336101054) is an individual otolaryngology provider in Boston, Massachusetts, licensed in Massachusetts (160725) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1336101054
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameKENNETH M GRUNDFASTCredential: M.D.
Location Address830 HARRISON AVE, STE 1400Boston, MA 02118
Mailing Address960 Massachussetts Avenue, Fl 2Boston, MA 02118-2690
Phone(617) 638-8124
Fax(617) 414-4953
Sole ProprietorNo
Medical School CMSState University Of Ny Upstate Medical UniversityGraduated 1969
Enumeration DateApril 6, 2006
Last NPPES UpdateAugust 25, 20265 updates tracked since enumeration
NPPES CertifiedAugust 25, 2026
✔ NPI 1336101054 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
Licenses✔ Licensed in MA · 160725✔ Licensed in DC · MD6119
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.
830 HARRISON AVE, Boston, MA 02118
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1800 Huntington AveBoston, MA 02115-6303 · Phone (617) 936-6160
Location 22300 M St NWWashington, DC 20037-1434 · Phone (202) 741-3574
Location 3243 Charles StBoston, MA 02114-3002 · Phone (617) 573-5526

Other Identifiers 2

Medicaid110061841AMA
Medicaid3115087NH

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kenneth M Grundfast M.d. 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 ID446259725
PECOS Enrollment IDI20110620000229, I20231130003496
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.

Areas of Expertise CMS Part B claims 4

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.

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.
24 services24 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.
23 services20 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.
21 services18 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.
13 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

Massachusetts Eye And Ear Infirmary -

Acute Care Hospitals · Boston, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number220075
Location243 Charles StreetBoston, MA 02114 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02118 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
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 20

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

DR. MAUREEN T KAVANAH M.D.
Surgery (Surgical Oncology)
830 HARRISON AVE, MOAKLEY SUITE 1200
BOSTON, MA 02118
Suffolk County (617) 638-8655
MR. DAVID M. TAUSEVICH CRNA, APRN, MS, CCRN
Nurse Anesthetist, Certified Registered
830 HARRISON AVE, SUITE 3500
BOSTON, MA 02118
Suffolk County (617) 638-8776
KARIMOT A MAKINDE FNP-C
Nurse Practitioner (Family)
830 HARRISON AVE, SUITE 1200, MOAKLEY BUILDING
BOSTON, MA 02118
Suffolk County (617) 414-7990
DR. HIROKO KUNITAKE MD
Colon & Rectal Surgery
830 HARRISON AVE, SUITE 2100
BOSTON, MA 02118
Suffolk County (617) 414-8054
DR. NAOMI KO M.D.
Internal Medicine (Medical Oncology)
830 HARRISON AVE, MOAKLEY, 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428
DR. ANDREEA M NEGROIU M.D.
Internal Medicine (Medical Oncology)
830 HARRISON AVE, MOAKLEY, 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428
DR. DUC BA PHAN AUD
Audiologist
830 HARRISON AVE
BOSTON, MA 02118
Suffolk County (617) 638-8124
CHRISTINE ENGLE
Nurse Practitioner (Adult Health)
830 HARRISON AVE, MOAKLEY 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428

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 Kenneth Grundfast's NPI number?

The NPI number for Kenneth Grundfast is 1336101054. It was assigned to this individual provider in the NPPES registry on April 6, 2006.

Where is Kenneth Grundfast located?

Kenneth Grundfast practices at 830 Harrison Ave Ste 1400, Boston, MA 02118. The listed phone number is (617) 638-8124.

What is Kenneth Grundfast's specialty?

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

Is Kenneth Grundfast enrolled in Medicare?

Yes. Kenneth Grundfast 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.

What insurance does Kenneth Grundfast accept?

Health plans from Anthem Blue Cross and Blue Shield list Kenneth Grundfast 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 Kenneth Grundfast affiliated with any hospitals?

According to CMS data, Kenneth Grundfast is affiliated with Boston Medical Center and Massachusetts Eye And Ear Infirmary -.

When was this NPI record last updated?

The NPPES record for Kenneth Grundfast was last updated on August 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.