National Provider Identifier
Gregory J Castiglia, MD
Gregory J Castiglia, MD is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician in Williamsville, NY and a listed phone number of (716) 218-1000.
Source: public NPPES record, last updated October 15, 2019. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1003891896
- Provider Type
- Individual
- Primary Specialty
- Neurological Surgery Physician
- Enumeration Date
- December 14, 2005
- Last Updated
- October 15, 2019
Practice Location
- 40 George Karl Blvd
- Williamsville, NY 14221-7183
Phone: (716) 218-1000
Specialties
- Neurological Surgery Physician (207T00000X)
Browse Similar Providers
See more providers in the Neurological Surgery classification in Buffalo, NY.
Medicare Part B Activity
Reported 1,703 Medicare fee-for-service service lines in 2024.
Peer comparison
Compared to Neurological Surgery providers in the Buffalo, NY metro area.
This provider is in the 97th percentile for Medicare service volume.
Among the highest-volume peers.
Performs about 18x the peer median number of Medicare services.
Higher than 29 of 30 peers.
- Activity Percentile
- 96.7%
- Rank by Services
- 1 of 30
- Total Services
- 1,703
- Est. Allowed Value
- $39,858.06
- Dataset Year
- 2024
- Drug Code Share
- 87.3%
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 Neurological Surgery classification rather than the exact subspecialty label shown elsewhere on the page.
Drug-related HCPCS codes make up 87.3% of reported Medicare services, so the claim mix is dominated by administered-drug billing lines.
Percentile distribution
Each bar represents a 10-point percentile band of peers by total Medicare services for Neurological Surgery across the Buffalo, NY metro area. Taller bars indicate higher service-volume bands. Highlighted bar marks this provider's percentile band.
Observed service range: 13 to 1,703 total Medicare services.
Top Clinical Services
- 62323: Injection of substance into lower spine canal using imaging guidance
62 services | $5,877.33
- 99213: Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
53 services | $4,605.57
- 99203: New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
39 services | $4,164.04
- 99222: Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
31 services | $3,865.01
- 22853: Insertion of cage or mesh device to spine bone and disc space during spine fusion
21 services | $4,630.16
Common Drug-Related Codes
- J1010: Injection, methylprednisolone acetate, 1 mg
1,486 services | $194.08
Full Record
- NPI
- 1003891896
- Entity Type
- Individual
- Last Name
- Castiglia
- First Name
- Gregory
- Middle Name
- J
- Credential
- MD
- Mailing Street Address
- 40 George Karl Blvd
- Mailing City
- Williamsville
- Mailing State
- NY
- Mailing ZIP Code
- 14221-7183
- Mailing Country
- US
- Mailing Phone
- (716) 218-1000
- Mailing Fax
- (716) 200-1857
- Practice Street Address
- 40 George Karl Blvd
- Practice City
- Williamsville
- Practice State
- NY
- Practice ZIP Code
- 14221-7183
- Practice Country
- US
- Practice Phone
- (716) 218-1000
- Practice Fax
- (716) 200-1857
- Enumeration Date
- December 14, 2005
- Last Updated
- October 15, 2019
- Sex
- Male
- Sole Proprietor
- No
- Taxonomies
- Neurological Surgery Physician (207T00000X)
- Other Identifiers
- 000525616001 (NY, Blue Cross/Blue Shield), 01934587 (NY), 0610627 (NY, Independent Health), 140006487 (Railroad Medicare), 00020521001 (NY, Univera Healthcare)