Dr. William C. Gehrhardt, MD
- Publications
- 1
- Industry payments
- $16
- Affiliated sites
- 3
- Medical groups
- 3
- State license
- 1
- Practice address
- 284 Pulaski Rd, Greenlawn, NY 11740
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nsuh Imaging at Huntington - HOPD
Acute Care Hospital outpatient department · Greenlawn, New York
Find Dr. Gehrhardt's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William C. Gehrhardt is a pediatrician in Greenlawn, New York
Dr. Gehrhardt practices at Nsuh Imaging at Huntington - HOPD in Greenlawn, New York.
Dr. Gehrhardt's NPI, 1649297797, was assigned on July 16, 2006. Dr. Gehrhardt holds New York license 224722.
- NPI
- 1649297797NPI Registry (opens in a new tab)
- NPI enumeration date
- July 16, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William C. Gehrhardt practices at Nsuh Imaging at Huntington - HOPD in Greenlawn, New York
Dr. Gehrhardt's primary practice is Nsuh Imaging at Huntington - HOPD, at 284 Pulaski Rd, Greenlawn, NY 11740.
- Nsuh Imaging at Huntington - HOPD284 Pulaski Rd, Greenlawn, NY 11740
Source: Dmand AI Affiliation Data
Dr. William C. Gehrhardt is affiliated with 3 sites of care and 3 medical groups
Dr. Gehrhardt's primary practice is Nsuh Imaging at Huntington - HOPD in Greenlawn, New York. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI also links Dr. Gehrhardt to 2 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Gehrhardt's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William C. Gehrhardt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gehrhardt practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nsuh Imaging at Huntington - HOPD | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William C. Gehrhardt is one of 4,313 pediatricians in New York
Pediatrics is Dr. Gehrhardt's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Gehrhardt is licensed in New York.
Specialties and state licenses
- Pediatrics, New YorkPrimary
Pediatricians near Dr. Gehrhardt
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William C. Gehrhardt's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Gehrhardt's median patient age at 13, with 52% women.
Dr. Gehrhardt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. William C. Gehrhardt has 1 publication on record
Dmand AI links 1 paper to Dr. Gehrhardt in 2024. Dr. Gehrhardt's most frequent co-authors are Chris Elsayad, MD, Yael Tobi Harris, MD and Amgad Nihad Makaryus, MD.
Dr. Gehrhardt's most frequent co-authors
- Chris Elsayad, MD1 shared paper
- Yael Tobi Harris, MD1 shared paper
- Amgad Nihad Makaryus, MD1 shared paper
Recent publications by Dr. Gehrhardt
See who Dr. Gehrhardt researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gehrhardt works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William C. Gehrhardt received $16 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Gehrhardt from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $16.
Companies that paid Dr. Gehrhardt the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William C. Gehrhardt's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William C. Gehrhardt
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William C. Gehrhardt's NPI number?
Dr. William C. Gehrhardt's NPI number is 1649297797. It was assigned on July 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William C. Gehrhardt?
Dr. William C. Gehrhardt is a pediatrician in Greenlawn, New York. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. William C. Gehrhardt practice?
Dr. Gehrhardt practices at 284 Pulaski Rd, Greenlawn, NY 11740. Dr. Gehrhardt's primary practice is Nsuh Imaging at Huntington - HOPD in Greenlawn, New York. Dmand AI also links Dr. Gehrhardt to 2 group practices and clinics and 2 medical groups.
What is Dr. William C. Gehrhardt's medical license number?
Dr. Gehrhardt holds New York license 224722.
What medical group is Dr. William C. Gehrhardt part of?
Dr. Gehrhardt is linked to Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI links Dr. Gehrhardt to 2 more medical groups.
Has Dr. William C. Gehrhardt received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Gehrhardt from 1 company from 2023 to 2023. The largest total came from Boston Scientific Corporation.
How long has Dr. William C. Gehrhardt been practicing?
Dr. Gehrhardt's NPI was assigned in 2006.
Does Dr. William C. Gehrhardt do research?
Dmand AI links 1 publication to Dr. Gehrhardt.
Who does Dr. William C. Gehrhardt publish with?
Dr. Gehrhardt's most frequent co-authors are Chris Elsayad, MD (1 shared paper), Yael Tobi Harris, MD (1 shared paper) and Amgad Nihad Makaryus, MD (1 shared paper).
Selling to pediatrics practices?
See pediatricians in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card