DR. KATHRYN KYUNG-MIN OH (M.D.) – Internal Medicine Physician, NPI 1407846348
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,722 INTERNAL MEDICINE in MA
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Provider Addresses for DR. KATHRYN KYUNG-MIN OH (M.D.)
Acton Medical Associates, 321, Main Street, Kelley's Corner, Acton, Middlesex County, Massachusetts, 01720, United States
ACTON, MA 017203718
Phone: (978) 635-8700
Fax: (978) 635-8920
Type: Mailing
38 E 32ND ST FL 9
NEW YORK, NY 100165563
Phone: (212) 481-7539
Fax: (212) 725-3660
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: 2025-11-24
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 |
|---|---|---|---|---|
| I20050301000198 | I | Internal Medicine | MA | TBD |
| I20251124000346 | I | Internal Medicine | NY | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 58 | 56 | $0 |
Insurance plans in this area (ZIP 01720)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NY | |
| G A S T R O E N T E R O L O G Y | NY | |
| Internal Medicine | NY | |
| - | NY | |
| Internal Medicine, Infectious Disease | NY | |
| Internal Medicine | NY | |
| - | NY | |
| Cardiovascular Disease (Cardiology), Internal Medicine | NY | |
| R H E U M A T O L O G Y | NY | |
| Internal Medicine | NY |
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