Physician Profile
Unclaimed ProfileAbout KARASZEWSKI
Brian Michael Karaszewski, M.D. is a healthcare provider in Williamsville, NY specializing in internal medicine. Brian trained at State University of New York at Buffalo School of Medicine, graduating in 1997. According to Medicare claims data, Brian cared for 252 Medicare patients across 528 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (716) 631-3555
- Email not available
Practice Locations
400 INTERNATIONAL DR.
Williamsville, NY 14221
Procedures Most Often Billed to Medicare
528 services · 252 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
21 |
| Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | Office visit | 99457 |
183 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
142 |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
111 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
71 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other internal medicines in Williamsville 7
Same specialty, same city.
Trained at State University of New York at Buffalo School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at State University of New York at Buffalo School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in NY who bill this service to Medicare most often.
Common questions
What is Dr. Karaszewski's specialty?
Dr. Karaszewski is an internal medicine in Williamsville, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Karaszewski?
Dr. Karaszewski is listed at 400 INTERNATIONAL DR., Williamsville, NY 14221. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Karaszewski?
The number on file is (716) 631-3555. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Karaszewski's NPI number?
Dr. Karaszewski's National Provider Identifier is 1255478376. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Karaszewski's medical education?
Dr. Karaszewski attended State University of New York at Buffalo School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Karaszewski been practicing?
Dr. Karaszewski has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Karaszewski known for?
According to Medicare billing data, Dr. Karaszewski provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Karaszewski confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Karaszewski. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.