MARK ALEXANDER, M.D.
Otolaryngologist/ENT
Unclaimed ProfileThis profile was created using publicly available federal provider information. The provider has not claimed, verified or endorsed this profile.
Otolaryngologist/ENT in WASHINGTON, DC
MARK ALEXANDER, M.D. is listed in the Pollen Atlas provider directory as a Otolaryngologist/ENT in WASHINGTON, District of Columbia, ZIP 20422-0001. This listing is drawn from the CMS National Plan and Provider Enumeration System (NPPES), the federal registry of health care providers, where this provider's record was first enumerated in 2006 (NPI 1386733970).
Otolaryngologists, often called ear, nose and throat (ENT) specialists, treat conditions of the sinuses, nasal passages, ears and throat. Allergy-driven problems such as chronic sinusitis, nasal congestion, post-nasal drip and recurrent sinus infections are a common part of ENT practice, alongside hearing, voice and sleep-related airway issues.
For patients in WASHINGTON, airborne pollen is one of the most common triggers behind these symptoms. Pollen Atlas tracks the pollen count for the WASHINGTON area every day, including the dominant allergen and a short-term forecast, so treatment and appointments can be planned around high-pollen days. See the live pollen summary for this area further down this page, explore the pollen heatmap, or find an allergist in WASHINGTON, DC in the full directory.
Practice location
WASHINGTON, DC, 20422-0001
View on mapPhone: (202) 745-8295
Pollen today in Washington, DC
Total Pollen Index: 19 / 100 (Low)
Dominant allergen today: Ragweed
- Tree pollen: 0.6 (Low)
- Grass pollen: 1 (Low)
- Weed pollen (ragweed): 25 (Low)
- Mold: 0 (Low)
Other Otolaryngologist/ENT near WASHINGTON, DC
Other providers listed in the Pollen Atlas directory for WASHINGTON, DC, closest in specialty to this profile:
- MIGUEL ACEVEDO
Otolaryngologist/ENT
WASHINGTON
- ELIANE ABOU-JAOUDE
Allergist & Immunologist
WASHINGTON
- OLABUNMI AGBOOLA
Allergist & Immunologist
WASHINGTON
- Dr. JALIL AHARI
Pulmonologist
WASHINGTON
- Dr. JASPAL AHLUWALIA
Environmental Medicine Physician
WASHINGTON
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Common questions about MARK ALEXANDER
What does a Otolaryngologist/ENT in WASHINGTON treat?
MARK ALEXANDER is listed as a Otolaryngologist/ENT in WASHINGTON, DC. Providers in this specialty commonly evaluate and treat chronic sinusitis, nasal congestion, post-nasal drip, recurrent sinus infections and other ear, nose and throat conditions. Confirm the conditions this practice treats, and whether it is accepting new patients, directly with the practice on (202) 745-8295.
Where is MARK ALEXANDER listed as practicing?
The practice location in this listing is WASHINGTON, District of Columbia 20422-0001, with the listed phone number (202) 745-8295. This listing is built from the federal CMS NPPES registry, so confirm the street address, office hours and appointment availability with the practice before visiting.
How can I check WASHINGTON pollen levels before an appointment?
Pollen Atlas publishes a daily pollen count for the WASHINGTON area on this page, with the full forecast, the pollen heatmap and the daily city rankings linked below, so you can see high-pollen days coming and plan outdoor time, medication and appointments around them.
Has MARK ALEXANDER verified this profile?
Not yet. This profile was created from publicly available federal provider information and has not been claimed. MARK ALEXANDER or the practice can claim this profile on Pollen Atlas to verify the details and add insurance plans, services, office hours and a biography.
Is this your profile? Claim this profile to verify and complete it.
Provider information
NPI: 1386733970
Data source: CMS National Plan and Provider Enumeration System
Federal information last updated: 9/11/2025