National Provider Identifier
Brian Michael Karaszewski, M.D.
Brian Michael Karaszewski, M.D. is listed in the NPPES registry with a primary specialty of Internal Medicine Physician in Williamsville, NY and a listed phone number of (716) 631-3555.
Source: public NPPES record, last updated August 19, 2019. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1255478376
- Provider Type
- Individual
- Primary Specialty
- Internal Medicine Physician
- Enumeration Date
- January 30, 2007
- Last Updated
- August 19, 2019
Practice Location
- 400 International Dr.
- Williamsville, NY 14221
Phone: (716) 631-3555
Specialties
- Internal Medicine Physician (207R00000X)
Browse Similar Providers
See more Internal Medicine providers in Buffalo, NY.
Medicare Part B Activity
Reported 487 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 61st percentile for Medicare service volume.
Around the middle of the peer group.
Performs 34% more Medicare services than the peer median.
Higher than 408 of 665 peers.
- Activity Percentile
- 61.4%
- Rank by Services
- 255 of 665
- Total Services
- 487
- Est. Allowed Value
- $39,201.97
- 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
177 services | $15,283.49
- G0439: Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
123 services | $15,082.86
- 99457: Management using the results of remote vital sign monitoring per calendar month, first 20 minutes
86 services | $3,991.26
- 99454: Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days
48 services | $2,251.68
- 99211: Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
15 services | $332.52
Full Record
- NPI
- 1255478376
- Entity Type
- Individual
- Last Name
- Karaszewski
- First Name
- Brian
- Middle Name
- Michael
- Name Prefix
- Dr.
- Credential
- M.D.
- Mailing Street Address
- 400 International Dr.
- Mailing City
- Williamsville
- Mailing State
- NY
- Mailing ZIP Code
- 14221
- Mailing Country
- US
- Mailing Phone
- (716) 631-3555
- Mailing Fax
- (716) 631-9525
- Practice Street Address
- 400 International Dr.
- Practice City
- Williamsville
- Practice State
- NY
- Practice ZIP Code
- 14221
- Practice Country
- US
- Practice Phone
- (716) 631-3555
- Practice Fax
- (716) 631-9525
- Enumeration Date
- January 30, 2007
- Last Updated
- August 19, 2019
- Sex
- Male
- Sole Proprietor
- Yes
- updated_by_file
- npidata_pfile_20050523-20260308.csv
- Taxonomies
- Internal Medicine Physician (207R00000X)