MICHAEL M. EINSTEIN (M.D.) – Gastroenterology Physician, NPI 1659339901
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
401 GASTROENTEROLOGY in CT
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Provider Addresses for MICHAEL M. EINSTEIN (M.D.)
Silas Deane Highway, Rocky Hill, Hartford County, Connecticut, 06067, United States
ROCKY HILL, CT 060672336
Phone: (860) 257-4131
Fax: (860) 257-4519
Type: Mailing
Medical Office Building, 85, Seymour Street, Frog Hollow Historic District, Hartford, Hartford County, Connecticut, 06106, United States
SUITE 1000
HARTFORD, CT 061065501
Phone: (860) 246-2571
Fax: (860) 246-3691
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 242 Open Payments records for all available years, with a total value of $39,326.
Total Amount is formed as General ($39,326) + Research ($0) + Ownership ($0) = $39,326.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Gilead Sciences, Inc. ($29,332).
Total Amount
$39,326
General + Research + Ownership
Payments
242
Total payment records
General Amount
$39,326
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
2
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Gilead Sciences, Inc. | $29,332 |
| Mirum Pharmaceuticals, Inc. | $6,182 |
| ABBVIE INC. | $557 |
| Takeda Pharmaceuticals U.S.A., Inc. | $451 |
| Janssen Biotech, Inc. | $433 |
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: 2011-07-28
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 |
|---|---|---|---|---|
| I20110728000024 | I | Gastroenterology | CT | 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 | 173 | 125 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 145 | 80 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 86 | 85 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 24 | 24 | $0 |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 23 | 22 | $0 |
Insurance plans in this area (ZIP 06067)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | CT | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 35 | 34 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Gastroenterology, Internal Medicine | CT | |
| - | NY | |
| Nurse Practitioner | CT | |
| Certified Registered Nurse Anesthetist (Crna) | NY | |
| G A S T R O E N T E R O L O G Y | CT | |
| P A T H O L O G Y | WA | |
| Internal Medicine, Gastroenterology | CT | |
| Physician Assistant | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT |
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