National Provider Identifier
Sandra A. Block, M.D.
Sandra A. Block, M.D. is listed in the NPPES registry with a primary specialty of Sleep Medicine (Psychiatry & Neurology) Physician in Williamsville, NY and a listed phone number of (716) 630-1122.
Source: public NPPES record, last updated January 09, 2026. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1205806627
- Provider Type
- Individual
- Primary Specialty
- Sleep Medicine (Psychiatry & Neurology) Physician
- Enumeration Date
- January 26, 2006
- Last Updated
- January 09, 2026
Practice Location
- 325 Essjay RD
- Suite 210
- Williamsville, NY 14221-8243
Phone: (716) 630-1122
Mailing Address
- 425 Essjay RD Ste 170
- Williamsville, NY 14221-8235
Specialties
- Sleep Medicine (Psychiatry & Neurology) Physician (2084S0012X)
- Neurology Physician (2084N0400X)
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Medicare Part B Activity
Reported 1,351 Medicare fee-for-service service lines in 2024.
Peer comparison
Compared to Psychiatry & Neurology providers in the Buffalo, NY metro area.
This provider is in the 84th percentile for Medicare service volume.
Higher volume than most peers.
Performs 391% more Medicare services than the peer median.
Higher than 100 of 119 peers.
- Activity Percentile
- 84.0%
- Rank by Services
- 19 of 119
- Total Services
- 1,351
- Est. Allowed Value
- $97,367.88
- Dataset Year
- 2024
- 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 Psychiatry & Neurology 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 Psychiatry & Neurology 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 248,811 total Medicare services.
Top Clinical Services
- 95938: Placement of skin electrodes and measurement of stimulated sites on arms and legs
271 services | $11,487.29
- G0453: Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)
258 services | $7,773.48
- 95955: Measurement of brain wave activity (eeg) outside the brain during surgery
150 services | $7,456.28
- 95939: Placement of skin electrodes and measurement of central motor stimulation in arms and legs
149 services | $16,490.29
- 95870: Needle measurement of electrical activity in arm, leg, trunk or head muscles, limited study
90 services | $1,661.31
Full Record
- NPI
- 1205806627
- Entity Type
- Individual
- Last Name
- Block
- First Name
- Sandra
- Middle Name
- A.
- Name Prefix
- Dr.
- Credential
- M.D.
- Mailing Street Address
- 425 Essjay RD Ste 170
- Mailing City
- Williamsville
- Mailing State
- NY
- Mailing ZIP Code
- 14221-8235
- Mailing Country
- US
- Mailing Phone
- (716) 630-1219
- Mailing Fax
- (716) 817-1726
- Practice Street Address
- 325 Essjay RD
- Practice Address Line 2
- Suite 210
- Practice City
- Williamsville
- Practice State
- NY
- Practice ZIP Code
- 14221-8243
- Practice Country
- US
- Practice Phone
- (716) 630-1122
- Practice Fax
- (716) 250-5924
- Enumeration Date
- January 26, 2006
- Last Updated
- January 09, 2026
- Sex
- Female
- Sole Proprietor
- No
- Certification Date
- January 09, 2026
- Taxonomies
- Sleep Medicine (Psychiatry & Neurology) Physician (2084S0012X), Neurology Physician (2084N0400X)
- Other Identifiers
- DD2364 (NY, Medicare Id)