DR. GREGORY D. ANDREASSIAN (M.D.,P.A.) – Surgery Physician, NPI 1619973120
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. GREGORY D. ANDREASSIAN (M.D.,P.A.)
205, West Windcrest Street, Fredericksburg, Gillespie County, Texas, 78624, United States
STE 130
FREDERICKSBURG, TX 786244478
Phone: (830) 997-6773
Fax: (830) 997-1961
Type: Mailing
130, West Windcrest Street, Fredericksburg, Gillespie County, Texas, 78624, United States
FREDERICKSBURG, TX 786244478
Phone: (830) 997-6773
Fax: (830) 997-1961
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: 2010-10-05
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 |
|---|---|---|---|---|
| I20101005000418 | I | General Surgery | TX | 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 |
|---|---|---|---|---|
| 45380 | Biopsy of large bowel using a flexible endoscope | 80 | 80 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 79 | 58 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 37 | 37 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 31 | 31 | $0 |
| G0105 | Colorectal cancer screening; colonoscopy on individual at high risk | 31 | 31 | $0 |
Insurance plans in this area (ZIP 78624)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TX | |
| - | TX | |
| - | TX | |
| Physician Assistant | TX | |
| - | TX | |
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine, Sleep Medicine | TX | |
| - | TX | |
| Internal Medicine | TX | |
| N E U R O L O G Y | TX | |
| - | TX |
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