NPI registry status
Active
2026 NPPES data Infectious Disease Physician NPI 1720100340 MD
Verify on CMS → Winston Frederick, MD
Infectious Disease Physician in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,292 in Infectious Disease Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
285
Medicare Part D claims · 32 beneficiaries · Infectious Disease Physician avg: 816
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Winston Frederick, MD filed 285 Medicare Part D claims in 2023 as a Infectious Disease Physician in Washington, District of Columbia.
- 285
- Part D claims, 2023
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Winston Frederick, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
285 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Winston Frederick, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Winston Frederick, MD?
Quality data not reportedPrimary specialty
Infectious Disease Physician
Medicare Part D claims
285 65% vs specialty avg
Specialty distribution in District of Columbia
How Infectious Disease Physician compares to other specialties among District of Columbia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Infectious Disease Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Winston Frederick, MD appears in the CMS NPPES registry as a Infectious Disease Physician provider holding MD credentials at 1160 VARNUM ST NE, Washington, DC, 20017, with a listed phone of (202) 526-6442. NPI 1720100340 was issued on 04/04/2007.
Medicare Part D records for calendar year 2023 show 285 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $186K in drug spend.
Infectious Disease Physician is a mid-sized specialty nationwide, with 8,292 enrolled providers across 54 states and an average of 816 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1720100340 |
|---|---|
| Specialty | Infectious Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/04/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
285
Total Claims
$186K
Total Drug Cost
32
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 515
- Total Day Supply
- 14,648
- Generic Drug Cost
- $7K
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 0.87
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Winston Frederick, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Biktarvy
Biktarvy
38 claims
- Losartan-Hydrochlo…
Losartan-Hydrochlorothiazide
22 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
21 claims
- Amlodipine Besylate
Amlodipine Besylate
21 claims
- Trulicity
Trulicity
17 claims
- Levothyroxine Sodium
Levothyroxine Sodium
16 claims
- Atorvastatin Calcium 12
Atorvastatin Calcium
12 claims
- Rosuvastatin Calcium 11
Rosuvastatin Calcium
11 claims
| Drug | Claims |
|---|---|
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 38 |
| Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide | 22 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 21 |
| Amlodipine Besylate | 21 |
| Trulicity Dulaglutide | 17 |
| Levothyroxine Sodium | 16 |
| Atorvastatin Calcium | 12 |
| Rosuvastatin Calcium | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Infectious Disease Physician in DC →
All providers in District of Columbia →
Compare specialties →
Infectious Disease Physician Overview
How Winston Frederick, MD fits within the Infectious Disease Physician landscape nationally.
8,292
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
816
Avg Claims per Provider
Winston Frederick, MD's 285 claims are below the specialty average of 816.
Nearby Infectious Disease Physician Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Frederick.
Dr. Stephen Abbott
MD
Washington, DC
Dr. Danielle Adams
PA-C
Washington, DC
Dr. Ziad Akl
M.D.
Washington, DC
Dr. Hana Akselrod
MD, MPH
Washington, DC
Dr. Mary Alder
RN , BSN, NP, DNSC
Washington, DC
Compare Infectious Disease Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the District of Columbia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Infectious Disease Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore District of Columbia
Frequently Asked Questions
What is Winston Frederick, MD's specialty? ▼
Winston Frederick, MD specializes in Infectious Disease Physician and practices in Washington, District of Columbia. Credentials: MD.
How much does Winston Frederick, MD prescribe under Medicare Part D? ▼
In 2023, Winston Frederick, MD wrote 285 Medicare Part D claims totaling $186K in drug costs for 32 beneficiaries.
Where is Winston Frederick, MD located? ▼
Winston Frederick, MD is located at 1160 VARNUM ST NE, Washington, DC, 20017. Phone: (202) 526-6442.
What is Winston Frederick, MD's NPI number? ▼
Winston Frederick, MD's National Provider Identifier (NPI) is 1720100340, issued on 04/04/2007.
How many Infectious Disease Physician providers are there in the US? ▼
There are 8,292 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 816 Medicare Part D claims per year.
What drugs does Winston Frederick, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Winston Frederick, MD's most frequently prescribed drugs include Biktarvy, Losartan-Hydrochlorothiazide, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Winston Frederick, MD accept Medicare? ▼
Winston Frederick, MD appears in CMS Medicare data with 285 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Winston Frederick, MD's credentials? ▼
Winston Frederick, MD's NPI is 1720100340 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.