NPI registry status
Active
2026 NPPES data Infectious Disease Physician NPI 1821075615 MD
Verify on CMS → Joseph Jemsek, 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
2K
Medicare Part D claims · 149 beneficiaries · Infectious Disease Physician avg: 816
Industry payments
$48.05
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Joseph Jemsek, MD filed 2,350 Medicare Part D claims in 2023 as a Infectious Disease Physician in Washington, District of Columbia.
- 2K
- Part D claims, 2023
- $48.05
- industry payments (Sunshine Act)
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.
Joseph Jemsek, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,350 Top 14% higher than 86% 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)
Joseph Jemsek, 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 Joseph Jemsek, MD?
Quality data not reportedPrimary specialty
Infectious Disease Physician
Medicare Part D claims
2,350 188% 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).
Joseph Jemsek, MD appears in the CMS NPPES registry as a Infectious Disease Physician provider holding MD credentials at 2000 PENNSYLVANIA AVE NW STE 4000, Washington, DC, 20006, with a listed phone of (202) 955-0003. NPI 1821075615 was issued on 12/22/2005.
Medicare Part D records for calendar year 2023 show 2,350 prescription claims written by this provider, covering 149 Medicare beneficiaries and totaling roughly $204K in drug spend, with an opioid prescribing rate of 2.7%.
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 | 1821075615 |
|---|---|
| Specialty | Infectious Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/22/2005 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Joseph Jemsek, MD. Source: openpaymentsdata.cms.gov.
Total received
$48
Largest payer
PFIZER INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,350
Total Claims
$204K
Total Drug Cost
149
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,096
- Total Day Supply
- 113,920
- Generic Drug Cost
- $125K
- Opioid Claims
- 64 (2.7% rate)
- Antibiotic Claims
- 369
Patient Demographics
- Average Patient Age
- 60.8 years
- Avg HCC Risk Score
- 0.91
- Gender Split
- 81% female / 19% male
- Age Distribution
- <65: 77, 65-74: 58, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Joseph Jemsek, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
114 claims
- Lamotrigine
Lamotrigine
99 claims
- Clonazepam
Clonazepam
94 claims
- Hydrocortisone
Hydrocortisone
88 claims
- Fluconazole
Fluconazole
82 claims
- Lorazepam
Lorazepam
72 claims
- Levothyroxine Sodium
Levothyroxine Sodium
65 claims
- Minocycline Hcl
Minocycline Hcl
64 claims
| Drug | Claims |
|---|---|
| Gabapentin | 114 |
| Lamotrigine | 99 |
| Clonazepam | 94 |
| Hydrocortisone | 88 |
| Fluconazole | 82 |
| Lorazepam | 72 |
| Levothyroxine Sodium | 65 |
| Minocycline Hcl | 64 |
| Metronidazole | 59 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 59 |
* 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 Joseph Jemsek, 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
Joseph Jemsek, MD's 2,350 claims are above 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 Jemsek.
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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Medical Specialties Explained
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Explore District of Columbia
Frequently Asked Questions
What is Joseph Jemsek, MD's specialty? ▼
Joseph Jemsek, MD specializes in Infectious Disease Physician and practices in Washington, District of Columbia. Credentials: MD.
How much does Joseph Jemsek, MD prescribe under Medicare Part D? ▼
In 2023, Joseph Jemsek, MD wrote 2,350 Medicare Part D claims totaling $204K in drug costs for 149 beneficiaries.
Where is Joseph Jemsek, MD located? ▼
Joseph Jemsek, MD is located at 2000 PENNSYLVANIA AVE NW STE 4000, Washington, DC, 20006. Phone: (202) 955-0003.
What is Joseph Jemsek, MD's NPI number? ▼
Joseph Jemsek, MD's National Provider Identifier (NPI) is 1821075615, issued on 12/22/2005.
Does Joseph Jemsek, MD prescribe opioids? ▼
Yes, Joseph Jemsek, MD had 64 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
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 Joseph Jemsek, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Joseph Jemsek, MD's most frequently prescribed drugs include Gabapentin, Lamotrigine, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Jemsek, MD accept Medicare? ▼
Joseph Jemsek, MD appears in CMS Medicare data with 2,350 Part D claims and 149 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Jemsek, MD's credentials? ▼
Joseph Jemsek, MD's NPI is 1821075615 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.