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 8,537 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
424
Medicare Part D claims · 37 beneficiaries · Infectious Disease Physician avg: 807
What the federal data shows
Winston Frederick, MD filed 424 Medicare Part D claims in 2024 as an Infectious Disease Physician in Washington, District of Columbia.
- 424
- Part D claims, 2024
- ≥61st
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Winston Frederick, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1720100340), first enumerated 04/04/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 424 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1720100340 · Infectious Disease Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1720100340
- ENUM-MID 2007
- TAX-MID 9K Infectious Disease
- RX-LIGHT 424
- BOOK-THIN 102 in District of Columbia
- PHOTO-ENUM Amber Read Zamilpa · 2007
Winston Frederick, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
424 ≥ 61st percentile 61% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
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
424 47% 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).
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 2024.
424
Total Claims
$290K
Total Drug Cost
37
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 852.2
- Total Day Supply
- 24,368
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 31
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.05
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Winston Frederick, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Losartan-Hydrochlo…
Losartan-Hydrochlorothiazide
35 claims
- Biktarvy
Biktarvy
32 claims
- Atorvastatin Calcium
Atorvastatin Calcium
25 claims
- Amlodipine Besylate
Amlodipine Besylate
21 claims
- Vitamin D2
Vitamin D2
21 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
19 claims
- Clopidogrel
Clopidogrel
17 claims
- Levothyroxine Sodium
Levothyroxine Sodium
17 claims
| Drug | Claims |
|---|---|
| Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide | 35 |
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 32 |
| Atorvastatin Calcium | 25 |
| Amlodipine Besylate | 21 |
| Vitamin D2 Ergocalciferol (Vitamin D2) | 21 |
| Rosuvastatin Calcium | 19 |
| Clopidogrel Clopidogrel Bisulfate | 17 |
| Levothyroxine Sodium | 17 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 14 |
| Trulicity Dulaglutide | 13 |
* 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.
8,537
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
807
Avg Claims per Provider
Winston Frederick, MD's 424 claims are below the specialty average of 807.
Nationwide Infectious Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Frederick, both outside District of Columbia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 102 Infectious Disease Physician providers enrolled in District of Columbia, 5 are shown here.
Dr. Stephen Abbott
MD
Washington, DC
Danielle Adams
PA-C
Washington, DC
Dr. Ziad Akl
M.D.
Washington, DC
Dr. Hana Akselrod
MD, MPH
Washington, DC
Mary Alder
RN , BSN, NP, DNSC
Washington, DC
Compare Infectious Disease Physician nationally: see state-by-state distribution →
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 2024, Winston Frederick, MD wrote 424 Medicare Part D claims totaling $290K in drug costs for 37 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 8,537 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 807 Medicare Part D claims per year.
What drugs does Winston Frederick, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Winston Frederick, MD's most frequently prescribed drugs include Losartan-Hydrochlorothiazide, Biktarvy, Atorvastatin Calcium. 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 424 Part D claims and 37 Medicare beneficiaries in 2024. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.