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 Neurological Surgery providers in Buffalo, NY.
Medicare Part B Activity
Reported 297 Medicare fee-for-service service lines in 2023.
Peer comparison
Compared to Neurological Surgery providers in the Buffalo, NY metro area.
This provider is in the 84th percentile for Medicare service volume.
Higher volume than most peers.
Performs 138% more Medicare services than the peer median.
Higher than 26 of 31 peers.
- Activity Percentile
- 83.9%
- Rank by Services
- 5 of 31
- Total Services
- 297
- Est. Allowed Value
- $28,322.72
- Dataset Year
- 2023
- Drug Code Share
- 16.2%
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.
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: 18 to 1,304 total Medicare services.
Top Clinical Services
- 62323: Injection of substance into lower spine canal using imaging guidance
65 services | $10,593.52
- 99213: Established patient office or other outpatient visit, 20-29 minutes
64 services | $5,406.07
- 99232: Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
48 services | $3,649.75
- 99222: Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
37 services | $4,626.85
- 99203: New patient office or other outpatient visit, 30-44 minutes
35 services | $3,666.61
Common Drug-Related Codes
- J1030: Injection, methylprednisolone acetate, 40 mg
48 services | $379.92
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
- updated_by_file
- npidata_pfile_20050523-20260308.csv
- 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)