DR. ALEXANDER TIESI M.D
NPI 1225569908
Emergency Medicine in Manassas, VA

Q: What is Alexander Tiesi's NPI number?

The NPI number for Alexander Tiesi is 1225569908. It was assigned to this individual provider in the NPPES registry on March 23, 2017.

Q: What is Alexander Tiesi's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Tiesi was last updated on July 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.

Active since March 23, 2017PECOS EnrolledAccepts Medicare Assignment

8700 SUDLEY RD, MANASSAS, VA 20110(703) 369-8000 Get Directions Write a Review

NPPES record last updated: July 23, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 23, 2020, Mar 23, 2017 (2 updates tracked since 2017).

On this page

About Dr. Alexander Tiesi M.d NPPES

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

DR. ALEXANDER TIESI M.D (NPI 1225569908) is an individual emergency medicine provider in Manassas, Virginia, licensed in Virginia (0101268233) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Sentara Northern Virginia Medical Center, and is a graduate of Temple University School Of Medicine (2017).

NPPES Registry Identity

NPI1225569908

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameDR. ALEXANDER TIESICredential: M.D

Location Address8700 SUDLEY RDManassas, VA 20110-4418

Mailing Address500 University DrHershey, PA 17033-2360 · (800) 243-1455

Phone(703) 369-8000

Sole ProprietorNo

Medical School CMSTemple University School Of MedicineGraduated 2017

Enumeration DateMarch 23, 2017

Last NPPES UpdateJuly 23, 20202 updates tracked since enumeration

NPPES CertifiedJuly 23, 2020

✔ NPI 1225569908 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in VA · 0101268233

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

8700 SUDLEY RD, Manassas, VA 20110

Open in Google Maps ↗

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

Dr. Alexander Tiesi M.d 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 ID2769806777

PECOS Enrollment IDI20200803001384

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.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

240 services223 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

84 services81 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

63 services63 patients

Emergency department visit with low level of medical decision making 99283

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

17 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sentara Northern Virginia Medical Center

Acute Care Hospitals · Woodbridge, VA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490113

Location2300 Opitz BoulevardWoodbridge, VA 22191 · Prince William County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20110 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

$86.88 typical visit price

range $56.19 – $170.30

Typical copayment $21.72 (range $14.04 – $42.57)

Most-billed visit code 99203

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

Most-billed visit code 99214

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.

SUSAN BRIEN CAMPBELL ANP

Nurse Practitioner