RUTH A. ROSS-MCCORMACK (MD) – Gastroenterology Physician, NPI 1295835833
Gastroenterology 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 RUTH A. ROSS-MCCORMACK (MD)
Lahey Hospital & Medical Center, 41, Burlington Mall Road, Burlington, Middlesex County, Massachusetts, 01805, United States
41 MALL ROAD
BURLINGTON, MA 018050001
Phone: (781) 764-1010
Fax: (781) 744-7132
Type: Mailing
37, Broadway, East Arlington, Arlington, Middlesex County, Massachusetts, 02474, United States
LAHEY ARLINGTON
ARLINGTON, MA 024745552
Phone: (781) 641-0100
Fax: (781) 744-7132
Type: Location
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: 2005-05-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20050517000131 | I | Internal Medicine | MA | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 123 | 80 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 117 | 96 | $0 |
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 66 | 64 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 56 | 56 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 42 | 42 | $0 |
Insurance plans in this area (ZIP 01805)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MA | |
| Nurse Practitioner | MA | |
| Nurse Practitioner | MA | |
| - | MA | |
| Family Practice | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| Nurse Practitioner | MA | |
| - | MA |
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