DR. NATHAN HEFLIN MASSEY (M.D.) – Gastroenterology Physician, NPI 1891865135
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
259 GASTROENTEROLOGY in KY
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Provider Addresses for DR. NATHAN HEFLIN MASSEY (M.D.)
2620, Wilhite Drive, Brookhaven, Lexington, Fayette County, Kentucky, 40503, United States
LEXINGTON, KY 405033385
Phone: (859) 278-6031
Fax: (859) 277-7015
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 39 Open Payments records for all available years, with a total value of $1,076.
Total Amount is formed as General ($1,076) + Research ($0) + Ownership ($0) = $1,076.
Last reported payment date: 2024-12-11 • Largest payer in this snapshot: ABBVIE INC. ($540).
Total Amount
$1,076
General + Research + Ownership
Payments
39
Total payment records
General Amount
$1,076
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $540 |
| Janssen Biotech, Inc. | $232 |
| Janssen Scientific Affairs, LLC | $144 |
| Lilly USA, LLC | $41 |
| Axonics, Inc. | $37 |
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: 2009-09-21
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 |
|---|---|---|---|---|
| I20090921000281 | I | Gastroenterology | KY | 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 | 441 | 253 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 159 | 159 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 99 | 97 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 82 | 66 | $0 |
| 88312 | Special stained specimen slides to identify organisms including interpretation and report | 72 | 66 | $0 |
Insurance plans in this area (ZIP 40503)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | KY | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 49 | 49 |
| GASTROENTEROLOGY | KY | 45378 | Diagnostic examination of large bowel using an endoscope | 20 | 20 |
| GASTROENTEROLOGY | KY | 45385 | Removal of polyps or growths of large bowel using an endoscope | 151 | 151 |
| GASTROENTEROLOGY | KY | 88342 | Tissue or cell analysis by immunologic technique | 97 | 95 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | KY | |
| Colorectal Surgery (Proctology) | FL | |
| Colorectal Surgery (Proctology) | KY | |
| Colorectal Surgery (Proctology) | KY | |
| Colorectal Surgery (Proctology) | AL | |
| - | KY | |
| Gastroenterology, Internal Medicine | KY | |
| Colorectal Surgery (Proctology) | KY | |
| Nurse Practitioner | KY | |
| Colorectal Surgery (Proctology) | KY |
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