Dr. Winston Raphael Frederick, MD
- Part D claims, 2024
- 424
- Hospital affiliations
- 1
- Industry payments
- $28
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 110 Irving Street NW, Washington, DC 20010
- Practice phone
- Call (202) 877-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Frederick's professional email, personal email and mobile number
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Dr. Winston Raphael Frederick is an infectious disease specialist in Washington, District of Columbia
Dr. Frederick practices at MedStar Washington Hospital Center in Washington, District of Columbia, part of MedStar Health.
Dr. Frederick's NPI, 1720100340, was assigned on April 4, 2007. Dr. Frederick holds District of Columbia license MD14686.
- NPI
- 1720100340NPI Registry (opens in a new tab)
- NPI enumeration date
- April 4, 2007
- NPI status
- Active
- Practice phone
- (202) 877-7000
- 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. Winston Raphael Frederick practices at MedStar Washington Hospital Center in Washington, District of Columbia
Dr. Frederick's primary practice is MedStar Washington Hospital Center, at 110 Irving Street NW, Washington, DC 20010 in The District County. The practice phone is (202) 877-7000.
- MedStar Washington Hospital Center110 Irving Street NW, Washington, DC 20010 · The District CountyPhone(202) 877-7000
Source: Dmand AI Affiliation Data
Dr. Winston Raphael Frederick is affiliated with 1 site of care
Dr. Frederick's primary practice is MedStar Washington Hospital Center in Washington, District of Columbia, part of MedStar Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Winston Raphael Frederick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Frederick practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MedStar Washington Hospital Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Winston Raphael Frederick is one of 84 infectious disease specialists in District of Columbia
Infectious disease is Dr. Frederick's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Frederick is licensed in District of Columbia.
Specialties and state licenses
- Infectious disease, District of ColumbiaPrimary
Infectious disease specialists near Dr. Frederick
Counts of infectious disease specialists 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. Winston Raphael Frederick's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Frederick's median patient age at 58, with 54% women.
Dr. Frederick's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women54%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Winston Raphael Frederick wrote 424 Medicare Part D claims in 2024
In 2024, Dr. Frederick wrote 424 Medicare Part D claims for 37 patients. 78% of them were for generic drugs. CMS names the drug for 225 of them, across 11 drugs with 11 or more claims each, at $217,909 in total drug cost. In 2023, CMS named 158 claims across 8 drugs.
Dr. Frederick's Part D claims by kind of drug, 2024
- Generic331 claims78%
- Brand-name and other93 claims22%
Dr. Frederick's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Frederick's Part D claims, 2024
- Antibiotics7%31 of 424 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1582024: 22542%
Drugs named by CMS: 11 in 2024, 8 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Winston Raphael Frederick received $28 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Frederick from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $28.
Companies that paid Dr. Frederick the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Winston Raphael Frederick'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 DataDmand 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 and Drug (CMS) (opens in a new tab)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 Dr. Winston Raphael Frederick
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. Winston Raphael Frederick's NPI number?
Dr. Winston Raphael Frederick's NPI number is 1720100340. It was assigned on April 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Winston Raphael Frederick?
Dr. Winston Raphael Frederick is an infectious disease specialist in Washington, District of Columbia. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Winston Raphael Frederick practice?
Dr. Frederick practices at 110 Irving Street NW, Washington, DC 20010. Dr. Frederick's primary practice is MedStar Washington Hospital Center in Washington, District of Columbia, part of MedStar Health.
What is Dr. Winston Raphael Frederick's office phone number?
The practice phone on file for Dr. Frederick is (202) 877-7000.
What is Dr. Winston Raphael Frederick's medical license number?
Dr. Frederick holds District of Columbia license MD14686.
Which hospitals is Dr. Winston Raphael Frederick affiliated with?
Dr. Frederick practices at MedStar Washington Hospital Center in Washington, District of Columbia.
What drugs does Dr. Winston Raphael Frederick prescribe most?
In 2024 Medicare Part D data, Dr. Frederick's most prescribed drugs by claims were Losartan-Hydrochlorothiazide, Biktarvy and Atorvastatin Calcium.
Has Dr. Winston Raphael Frederick received payments from drug or device companies?
CMS Open Payments shows $28 in general payments to Dr. Frederick from 1 company from 2017 to 2017. The largest total came from Gilead Sciences, Inc.
How long has Dr. Winston Raphael Frederick been practicing?
Dr. Frederick's NPI was assigned in 2007.
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