National Provider Identifier
Mark J Vanviegen, ENP/FNP-BC
Mark J Vanviegen, ENP/FNP-BC is listed in the NPPES registry with a primary specialty of Nurse Practitioner in Buffalo, NY and a listed phone number of (919) 426-1756.
Source: public NPPES record, last updated June 04, 2026. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1477541779
- Provider Type
- Individual
- Primary Specialty
- Nurse Practitioner
- Enumeration Date
- October 11, 2005
- Last Updated
- June 04, 2026
Practice Location
- 266 Elmwood Ave Ste 428
- Buffalo, NY 14222-2202
Phone: (919) 426-1756
Mailing Address
- 266 Elmwood Ave
- Pmg 428
- Buffalo, NY 14222
Specialties
- Nurse Practitioner (363L00000X)
- Acute Care Nurse Practitioner (363LA2100X)
- Family Nurse Practitioner (363LF0000X)
Browse Similar Providers
See more providers in the Nurse Practitioner classification in Buffalo, NY.
Medicare Part B Activity
Reported 234 Medicare fee-for-service service lines in 2024.
Peer comparison
Compared to Nurse Practitioner providers in the Buffalo, NY metro area.
This provider is in the 65th percentile for Medicare service volume.
Around the middle of the peer group.
Performs 53% more Medicare services than the peer median.
Higher than 504 of 775 peers.
- Activity Percentile
- 65.0%
- Rank by Services
- 271 of 775
- Total Services
- 234
- Est. Allowed Value
- $30,585.64
- Dataset Year
- 2024
- Drug Code Share
- 0.0%
Estimated allowed value reflects Medicare fee-for-service allowed amounts only. It does not include Medicare Advantage, commercial insurance, cash-pay services, or employment compensation.
Percentile distribution
Each bar represents a 10-point percentile band of peers by total Medicare services for Nurse Practitioner across the Buffalo, NY metro area. Taller bars indicate higher service-volume bands. Highlighted bar marks this provider's percentile band.
Observed service range: 11 to 11,907 total Medicare services.
Top Clinical Services
- 99285: Emergency department visit with high level of medical decision making
115 services | $18,152.60
- 99284: Emergency department visit with moderate level of medical decision making
108 services | $11,707.01
- 99283: Emergency department visit with low level of medical decision making
11 services | $726.03
Biography
Mark VanViegen is an emergency and family nurse practitioner who trained at Duke University and holds ANCC board certifications in emergency and family nurse practitioner practice. A Duke School of Nursing alumni profile noted his prior work with Wake Emergency Physicians in Raleigh, where he also served as a preceptor for Campbell University physician assistant students during their emergency medicine rotation.
Full Record
- NPI
- 1477541779
- Entity Type
- Individual
- Last Name
- Vanviegen
- First Name
- Mark
- Middle Name
- J
- Credential
- ENP/FNP-BC
- Mailing Street Address
- 266 Elmwood Ave
- Mailing Address Line 2
- Pmg 428
- Mailing City
- Buffalo
- Mailing State
- NY
- Mailing ZIP Code
- 14222
- Mailing Country
- US
- Mailing Phone
- (919) 426-1756
- Practice Street Address
- 266 Elmwood Ave Ste 428
- Practice City
- Buffalo
- Practice State
- NY
- Practice ZIP Code
- 14222-2202
- Practice Country
- US
- Practice Phone
- (919) 426-1756
- Enumeration Date
- October 11, 2005
- Last Updated
- June 04, 2026
- Sex
- Male
- Sole Proprietor
- No
- Certification Date
- June 04, 2026
- Taxonomies
- Nurse Practitioner (363L00000X), Acute Care Nurse Practitioner (363LA2100X), Family Nurse Practitioner (363LF0000X)
- Other Identifiers
- NP0297 (SC), P00398888 (NC, Railroad Medicare)