William Kreifels, DDS
- Part D claims, 2024
- 204
- Industry payments
- $41
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1824 Madison Avenue, Manhattan, NY 10035
- Practice phone
- Call (212) 423-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Family Health Center of Harlem
FQHC - Main Site · Manhattan, New York
Find William Kreifels' 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.
William Kreifels is a general practice dentistry in New York, New York
William Kreifels practices at Family Health Center of Harlem in Manhattan, New York.
William Kreifels' NPI, 1962865022, was assigned on April 5, 2016. William Kreifels holds Illinois license 019031369.
- NPI
- 1962865022NPI Registry (opens in a new tab)
- NPI enumeration date
- April 5, 2016
- NPI status
- Active
- Practice phone
- (212) 423-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Kreifels practices at Family Health Center of Harlem in Manhattan, New York
William Kreifels' primary practice is Family Health Center of Harlem, at 1824 Madison Avenue, Manhattan, NY 10035 in New York County. The practice phone is (212) 423-4500.
- Family Health Center of Harlem1824 Madison Avenue, Manhattan, NY 10035 · New York CountyPhone(212) 423-4500
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Kreifels is affiliated with 1 site of care and 1 medical group
William Kreifels' primary practice is Family Health Center of Harlem in Manhattan, New York. The medical group on file is The Institute for Family Health.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Kreifels' practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Kreifels practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Family Health Center of Harlem | Available with a free account |
Source: Dmand AI Technology Install Data
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William Kreifels is one of 2,709 general practice dentistrys in New York
General practice is William Kreifels' primary specialty in the NPI Registry, under taxonomy code 1223G0001X. William Kreifels is licensed in Illinois.
Specialties and state licenses
- General practice dentistry, IllinoisPrimary
General practice dentistrys near William Kreifels
Counts of general practice dentistrys 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
William Kreifels' patients have a median age of 62
Across all payers, Dmand AI patient panel data puts William Kreifels' median patient age at 62, with 41% women.
William Kreifels' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women41%
- Men57%
Source: Dmand AI Patient Panel Data
William Kreifels wrote 204 Medicare Part D claims in 2024
In 2024, William Kreifels wrote 204 Medicare Part D claims for 145 patients. 99% of them were for generic drugs.
William Kreifels' Part D claims by kind of drug, 2024
- Generic201 claims99%
- Brand-name and other3 claims1%
Drug classes CMS tracks in William Kreifels' Part D claims, 2024
- Antibiotics56%115 of 204 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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William Kreifels received $41 in industry payments in 2025
CMS Open Payments shows 1 general payment to William Kreifels from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Envista Holdings Corporation paid the most, $41.
Companies that paid William Kreifels the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for William Kreifels'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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 William Kreifels
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Kreifels' NPI number?
William Kreifels' NPI number is 1962865022. It was assigned on April 5, 2016, and it is active in the NPI Registry.
What does William Kreifels specialize in?
William Kreifels is a general practice dentistry in New York, New York. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does William Kreifels practice?
William Kreifels practices at 1824 Madison Avenue, Manhattan, NY 10035. William Kreifels' primary practice is Family Health Center of Harlem in Manhattan, New York.
What is William Kreifels' office phone number?
The practice phone on file for William Kreifels is (212) 423-4500.
What is William Kreifels' medical license number?
William Kreifels holds Illinois license 019031369, one of 2 state licenses on file.
What medical group is William Kreifels part of?
William Kreifels is linked to The Institute for Family Health.
Has William Kreifels received payments from drug or device companies?
CMS Open Payments shows $41 in general payments to William Kreifels from 1 company from 2025 to 2025. The largest total came from Envista Holdings Corporation.
How long has William Kreifels been practicing?
William Kreifels' NPI was assigned in 2016.
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