National Provider Identifier
William Spencer Grigg, D.O.
William Spencer Grigg, D.O. is listed in the NPPES registry with a primary specialty of Internal Medicine Physician in Rochester, NY and a listed phone number of (858) 275-4290.
Source: public NPPES record, last updated July 22, 2024. This profile is informational and is not medical advice, a quality rating, or a provider recommendation.
Profile Overview
- NPI
- 1578050266
- Provider Type
- Individual
- Primary Specialty
- Internal Medicine Physician
- Enumeration Date
- April 18, 2018
- Last Updated
- July 22, 2024
Practice Location
- 601 Elmwood Avenue
- Box 679
- Rochester, NY 14642
Phone: (858) 275-4290
Specialties
- Internal Medicine Physician (207R00000X)
- Hospitalist Physician (208M00000X)
- Internal Medicine Physician (207R00000X)
- Student in an Organized Health Care Education/Training Program (390200000X)
Browse Similar Providers
See more Internal Medicine providers in Rochester, NY.
Medicare Part B Activity
Reported 168 Medicare fee-for-service service lines in 2023.
Peer comparison
Compared to Internal Medicine providers in the Rochester, NY metro area.
This provider is in the 32nd percentile for Medicare service volume.
Lower volume than many peers.
Performs 33% fewer Medicare services than the peer median.
Higher than 273 of 854 peers.
- Activity Percentile
- 32.0%
- Rank by Services
- 580 of 854
- Total Services
- 168
- Est. Allowed Value
- $20,208.65
- Dataset Year
- 2023
- 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 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 Rochester, NY metro area. Taller bars indicate higher service-volume bands. Highlighted bar marks this provider's percentile band.
Observed service range: 11 to 7,346 total Medicare services.
Top Clinical Services
- 99214: Established patient office or other outpatient visit, 30-39 minutes
56 services | $7,117.70
- 99223: Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
39 services | $6,718.71
- 99222: Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
34 services | $4,391.55
- 99232: Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
22 services | $1,731.50
- 93000: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
17 services | $249.19
Full Record
- NPI
- 1578050266
- Entity Type
- Individual
- Last Name
- Grigg
- First Name
- William
- Middle Name
- Spencer
- Name Prefix
- Dr.
- Credential
- D.O.
- Mailing Street Address
- 601 Elmwood Avenue
- Mailing Address Line 2
- Box 679
- Mailing City
- Rochester
- Mailing State
- NY
- Mailing ZIP Code
- 14642
- Mailing Country
- US
- Mailing Phone
- (858) 275-4290
- Mailing Fax
- (585) 473-1573
- Practice Street Address
- 601 Elmwood Avenue
- Practice Address Line 2
- Box 679
- Practice City
- Rochester
- Practice State
- NY
- Practice ZIP Code
- 14642
- Practice Country
- US
- Practice Phone
- (858) 275-4290
- Practice Fax
- (585) 473-1573
- Enumeration Date
- April 18, 2018
- Last Updated
- July 22, 2024
- Sex
- Male
- Sole Proprietor
- No
- Certification Date
- January 26, 2022
- updated_by_file
- npidata_pfile_20050523-20260308.csv
- Taxonomies
- Internal Medicine Physician (207R00000X), Hospitalist Physician (208M00000X), Internal Medicine Physician (207R00000X), Student in an Organized Health Care Education/Training Program (390200000X)