DR. BARRY T HAMMAKER (MD) – Surgery Physician, NPI 1649241365
Surgery Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
756 GENERAL SURGERY in CO
Provider Addresses for DR. BARRY T HAMMAKER (MD)
PO BOX 40000
VAIL, CO 816587520
Phone: (970) 476-5036
Type: Mailing
181 W MEADOW DR
VAIL, CO 816575242
Phone: (970) 476-5036
Type: Location
180, South Frontage Road West, Vail, Eagle County, Colorado, 81657, United States
VAIL, CO 81657
Phone: (970) 476-5036
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $40.
Total Amount is formed as General ($40) + Research ($0) + Ownership ($0) = $40.
Last reported payment date: 2023-05-30 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($40).
Total Amount
$40
General + Research + Ownership
Payments
1
Total payment records
General Amount
$40
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Intuitive Surgical, Inc. | $40 |
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: 2005-04-20
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 |
|---|---|---|---|---|
| I20050420001167 | I | General Surgery | CO | 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 | 26 | 19 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 22 | 20 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 22 | 22 | $0 |
| 99211 | Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 18 | 13 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 13 | 13 | $0 |
Insurance plans in this area (ZIP 81658)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | CO | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | CO | |
| - | CO | |
| - | CO | |
| Physician Assistant | CA | |
| Critical Care (Intensivists), Pulmonary Disease | CO | |
| Critical Care (Intensivists), Pulmonary Disease | CO | |
| General Surgery | CO | |
| Nurse Practitioner | MA | |
| Physician Assistant | CO |
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