National Provider Identifier
William Michael Hartrich, M.D.
William Michael Hartrich, 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) 634-5410.
Source: public NPPES record, last updated January 21, 2010. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1629026703
- Provider Type
- Individual
- Primary Specialty
- Internal Medicine Physician
- Enumeration Date
- May 04, 2006
- Last Updated
- January 21, 2010
Practice Location
- 1835 Maple RD
- Williamsville, NY 14221-2711
Phone: (716) 634-5410
Specialties
- Internal Medicine Physician (207R00000X)
- Pediatrics Physician (208000000X)
Browse Similar Providers
See more Internal Medicine providers in Buffalo, NY.
Medicare Part B Activity
Reported 282 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 41st percentile for Medicare service volume.
Around the middle of the peer group.
Performs 22% fewer Medicare services than the peer median.
Higher than 274 of 665 peers.
- Activity Percentile
- 41.2%
- Rank by Services
- 390 of 665
- Total Services
- 282
- Est. Allowed Value
- $30,203.18
- Dataset Year
- 2023
- Drug Code Share
- 18.8%
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
70 services | $6,055.12
- G0439: Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
58 services | $7,314.96
- G0008: Administration of influenza virus vaccine
33 services | $883.23
- 99214: Established patient office or other outpatient visit, 30-39 minutes
29 services | $3,606.54
- G0009: Administration of pneumococcal vaccine
26 services | $767.26
Common Drug-Related Codes
- 90677: Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
27 services | $7,608.99
- 90662: Influenza vaccine split virus, preservative free
26 services | $1,870.18
Full Record
- NPI
- 1629026703
- Entity Type
- Individual
- Last Name
- Hartrich
- First Name
- William
- Middle Name
- Michael
- Name Prefix
- Dr.
- Credential
- M.D.
- Mailing Street Address
- 1835 Maple RD
- Mailing City
- Williamsville
- Mailing State
- NY
- Mailing ZIP Code
- 14221-2711
- Mailing Country
- US
- Mailing Phone
- (716) 634-5410
- Mailing Fax
- (716) 634-0430
- Practice Street Address
- 1835 Maple RD
- Practice City
- Williamsville
- Practice State
- NY
- Practice ZIP Code
- 14221-2711
- Practice Country
- US
- Practice Phone
- (716) 634-5410
- Practice Fax
- (716) 634-0430
- Enumeration Date
- May 04, 2006
- Last Updated
- January 21, 2010
- Sex
- Male
- Sole Proprietor
- No
- updated_by_file
- npidata_pfile_20050523-20260308.csv
- Taxonomies
- Internal Medicine Physician (207R00000X), Pediatrics Physician (208000000X)