DR. THALIA MAYES (M.D.) – Gastroenterology Physician, NPI 1033126826
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
94 GASTROENTEROLOGY in ME
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Provider Addresses for DR. THALIA MAYES (M.D.)
161, Marginal Way, Bayside, Portland, Cumberland County, Maine, 04101, United States
PORTLAND, ME 041012438
Phone: (207) 773-7964
Fax: (207) 773-9073
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $113.
Total Amount is formed as General ($113) + Research ($0) + Ownership ($0) = $113.
Last reported payment date: 2024-11-19 • Largest payer in this snapshot: Lilly USA, LLC ($86).
Total Amount
$113
General + Research + Ownership
Payments
2
Total payment records
General Amount
$113
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $86 |
| ABBVIE INC. | $27 |
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: 2008-10-31
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 |
|---|---|---|---|---|
| I20081031000055 | I | Gastroenterology | ME | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 264 | 82 | $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 | 76 | 75 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 74 | 73 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 60 | 60 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 50 | 43 | $0 |
Insurance plans in this area (ZIP 04101)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | ME | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 17 | 16 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | ME | |
| G A S T R O E N T E R O L O G Y | ME | |
| - | ME | |
| G A S T R O E N T E R O L O G Y | ME | |
| G A S T R O E N T E R O L O G Y | ME | |
| Gastroenterology, Internal Medicine | ME | |
| Nurse Practitioner | ME | |
| Nurse Practitioner | ME | |
| G A S T R O E N T E R O L O G Y | ME | |
| G A S T R O E N T E R O L O G Y | ME |
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