MARK A. DEMAR (M.D.) – Surgery Physician, NPI 1821050253
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
308 GENERAL SURGERY in NV
Provider Addresses for MARK A. DEMAR (M.D.)
PO BOX 4234
CARSON CITY, NV 897024234
Phone: (775) 684-9009
Type: Mailing
1761 COLLEGE PKWY STE 112
CARSON CITY, NV 897067954
Phone: (775) 684-9009
Type: Location
Vista Lane, Carson City, Nevada, 89703, United States
CARSON CITY, NV 897034643
Phone: (775) 882-2067
Fax: (775) 882-3706
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $1,181.
Total Amount is formed as General ($1,181) + Research ($0) + Ownership ($0) = $1,181.
Last reported payment date: 2023-09-27 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($1,168).
Total Amount
$1,181
General + Research + Ownership
Payments
11
Total payment records
General Amount
$1,181
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-27
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Intuitive Surgical, Inc. | $1,168 |
| Davol Inc. | $13 |
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: 2022-09-12
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20080519000260 | I | General Surgery | NV | TBD |
| I20220912002082 | I | General Surgery | CA | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 89702)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | NV | |
| Family Practice | NV | |
| Nurse Practitioner | NV | |
| General Surgery | PA | |
| Physician Assistant | NV | |
| Internal Medicine, Family Practice | NV | |
| Physician Assistant | NV | |
| - | PA | |
| - | NV | |
| Nurse Practitioner | NV |
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