KENNETH M GRUNDFAST (M.D.) – Otolaryngology Physician, NPI 1336101054
Otolaryngology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
392 OTOLARYNGOLOGY in MA
Provider Addresses for KENNETH M GRUNDFAST (M.D.)
800 Huntington Ave
Boston, MA 021156303
Phone: (617) 936-6160
Type: Location
243 Charles St
Boston, MA 021143002
Phone: (617) 573-5526
Type: Location
2300 M St NW
Washington, DC 200371434
Phone: (202) 741-3574
Type: Location
FGH, 820, Harrison Avenue, South End, Boston, Suffolk County, Massachusetts, 02118, United States
SUITE 4005
BOSTON, MA 021182905
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2023-11-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20110620000229 | I | Otolaryngology | MA | TBD |
| I20231130003496 | I | Otolaryngology | DC | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 41 | 41 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 14 | 14 | $0 |
Insurance plans in this area (ZIP 02115)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| O P T O M E T R Y | MA | |
| O P H T H A L M O L O G Y | MA | |
| - | OH | |
| N E U R O L O G Y | MA | |
| O T O L A R Y N G O L O G Y | MA | |
| O T O L A R Y N G O L O G Y | MA | |
| N E U R O L O G Y | MA | |
| - | MA | |
| Diagnostic Radiology | MA |
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