National Provider Identifier
Mark Stephen St Marie, MD
Mark Stephen St Marie, MD is listed in the NPPES registry with a primary specialty of Gastroenterology Physician in Williamsville, NY and a listed phone number of (716) 626-2644.
Source: public NPPES record, last updated August 27, 2024. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1629150792
- Provider Type
- Individual
- Primary Specialty
- Gastroenterology Physician
- Enumeration Date
- October 19, 2006
- Last Updated
- August 27, 2024
Practice Location
- 111 N Maplemere RD Ste 200
- Williamsville, NY 14221-3182
Phone: (716) 626-2644
Specialties
- Gastroenterology Physician (207RG0100X)
Browse Similar Providers
See more Gastroenterology providers in Buffalo, NY.
Medicare Part B Activity
Reported 132 Medicare fee-for-service service lines in 2023.
Peer comparison
Compared to Internal Medicine providers in the Buffalo, NY metro area.
This provider is in the 20th percentile for Medicare service volume.
Lower volume than many peers.
Performs 64% fewer Medicare services than the peer median.
Higher than 135 of 665 peers.
- Activity Percentile
- 20.3%
- Rank by Services
- 528 of 665
- Total Services
- 132
- Est. Allowed Value
- $12,493.49
- Dataset Year
- 2023
- 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.
Peers are grouped by the broader Internal Medicine classification rather than the exact subspecialty label shown elsewhere on the page.
Percentile distribution
Each bar represents a 10-point percentile band of peers by total Medicare services for Internal Medicine 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 91,321 total Medicare services.
Top Clinical Services
- 99213: Established patient office or other outpatient visit, 20-29 minutes
89 services | $7,244.40
- 99443: Telephone medical discussion with physician, 21-30 minutes
43 services | $5,249.09
Full Record
- NPI
- 1629150792
- Entity Type
- Individual
- Last Name
- St Marie
- First Name
- Mark
- Middle Name
- Stephen
- Name Prefix
- Mr.
- Credential
- MD
- Mailing Street Address
- 111 N Maplemere RD Ste 200
- Mailing City
- Williamsville
- Mailing State
- NY
- Mailing ZIP Code
- 14221-3182
- Mailing Country
- US
- Mailing Phone
- (716) 626-2644
- Practice Street Address
- 111 N Maplemere RD Ste 200
- Practice City
- Williamsville
- Practice State
- NY
- Practice ZIP Code
- 14221-3182
- Practice Country
- US
- Practice Phone
- (716) 626-2644
- Enumeration Date
- October 19, 2006
- Last Updated
- August 27, 2024
- Sex
- Male
- Sole Proprietor
- Yes
- Certification Date
- August 21, 2024
- updated_by_file
- npidata_pfile_20050523-20260308.csv
- Taxonomies
- Gastroenterology Physician (207RG0100X)