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ALEXANDER NISSEN
NPI 1730540386
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Bethesda, MD

Active since March 10, 2016PECOS EnrolledAccepts Medicare Assignment
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 WISCONSIN AVE, BETHESDA, MD 20889(703) 401-2509 Get Directions Write a Review

NPPES record last updated: August 20, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 6, 2025, Nov 20, 2017 (2 updates tracked since 2017).

About Alexander Nissen NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER NISSEN (NPI 1730540386) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Bethesda, Maryland, licensed in Virginia (0101263081) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1730540386
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameALEXANDER NISSEN
Location AddressWALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 WISCONSIN AVEBethesda, MD 20889-0004
Mailing AddressWalter Reed National Military Medical Center, 8901 Wisconsin AveBethesda, MD 20889-0004 · (703) 401-2509
Phone(703) 401-2509
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateMarch 10, 2016
Last NPPES UpdateAugust 20, 20252 updates tracked since enumeration
NPPES CertifiedAugust 20, 2025
✔ NPI 1730540386 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in VA · 0101263081
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101263081 (VA)
WALTER REED NATIONAL MILITARY MEDICAL CENTER, Bethesda, MD 20889
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexander Nissen is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1052819901
PECOS Enrollment IDI20250809000547
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20889 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DOUGLAS GRANT HAWK M.D.
Internal Medicine
WALTER REED NATIONAL MILITARY MEDICAL CENTER
BETHESDA, MD 20889
Montgomery County (301) 400-1012
BENJAMIN SNYDER
Military Health Care Provider
WALTER REED NATIONAL MILITARY MEDICAL CENTER
BETHESDA, MD 20889
Montgomery County (301) 319-2498
THOMAS ANTHONY OLLERHEAD DO
Allergy & Immunology
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 WISCONSIN AVENUE
BETHESDA, MD 20889
Montgomery County (301) 319-8754
DR. DEBRA DEANNE BUCKLAND-COFFEY M.D.
Internal Medicine
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-0568
BRANDON JAMES NEAL MD
Pediatrics
WALTER REED NATIONAL MILITARY MEDICAL CENTER
BETHESDA, MD 20889
Montgomery County (907) 792-9257
DR. NOELLE SUMMERS LARSON MD
Pediatrics (Pediatric Endocrinology)
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4959
DR. DOUGLAS NORRIS WATERMAN DDS, MS
Dentist (Orthodontics and Dentofacial Orthopedics)
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 400-2039
DR. NICOLE A. STOUGHTON PSY.D.
Psychologist
WALTER REED NATIONAL MILITARY MEDICAL CENTER, 8901 ROCKVILLE PIKE, BUILDING 85T
BETHESDA, MD 20889
Montgomery County (301) 400-2110

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexander Nissen's NPI number?

The NPI number for Alexander Nissen is 1730540386. It was assigned to this individual provider in the NPPES registry on March 10, 2016.

Where is Alexander Nissen located?

Alexander Nissen practices at Walter Reed National Military Medical Center 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (703) 401-2509.

What is Alexander Nissen's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Alexander Nissen enrolled in Medicare?

Yes. Alexander Nissen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Alexander Nissen was last updated on August 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.