1. Home
  2. Directory
  3. Maryland
  4. Bethesda
  5. Nurse Practitioner
  6. NPI Profile

SIERRA WILLIAMS HOWELL DNP
NPI 1790202000
Nurse Practitioner - Pediatrics in Bethesda, MD

Active since August 28, 2017
8901 WISCONSIN AVE, BETHESDA, MD 20889(301) 295-8901 Get Directions Write a Review

NPPES record last updated: November 17, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 17, 2025, Aug 14, 2023, Feb 24, 2023 and 1 more (4 updates tracked since 2017).

About Sierra Williams Howell Dnp NPPES

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

SIERRA WILLIAMS HOWELL DNP (NPI 1790202000) is an individual pediatrics provider in Bethesda, Maryland, licensed in Florida (9296664) and active in the NPI registry since August 2017.

NPPES Registry Identity

NPI1790202000
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameSIERRA WILLIAMS HOWELLCredential: DNP
Location Address8901 WISCONSIN AVEBethesda, MD 20889-0004
Mailing Address8901 Wisconsin AveBethesda, MD 20889-0004 · (301) 298-8901
Phone(301) 295-8901
Sole ProprietorNo
Enumeration DateAugust 28, 2017
Last NPPES UpdateNovember 17, 20254 updates tracked since enumeration
NPPES CertifiedNovember 17, 2025
✔ NPI 1790202000 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in FL · 9296664
Also ListedMilitary Health Care ProviderTaxonomy 171000000X · License 9296664 (FL)
8901 WISCONSIN AVE, Bethesda, MD 20889
Open in Google Maps ↗

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. TAMMERA NELSON
Pharmacist
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4497
DAWOOD TAFTI M.D.
Radiology (Diagnostic Radiology)
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 319-8373
DR. ASHLEY BEE BOZZAY
Student in an Organized Health Care Education/Training Program
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-8588
DR. ADAM JOSEPH MAIER DO
Internal Medicine (Infectious Disease)
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
OANA MARIA POVIAN STROIE MD
General Practice
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
SIMAL RUHISHTA ALI DO
General Practice
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4900
DR. JACOB L FRIESEN M.D.
Psychiatry & Neurology (Psychiatry)
8901 WISCONSIN AVE, WRNMMC, NICOE, BUILDING 51
BETHESDA, MD 20889
Montgomery County (301) 319-3772
MS. CARLA PATRICE ALEXIS P.T.
Physical Therapist
8901 WISCONSIN AVE
BETHESDA, MD 20889
Montgomery County (301) 295-4880

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 Sierra Howell's NPI number?

The NPI number for Sierra Howell is 1790202000. It was assigned to this individual provider in the NPPES registry on August 28, 2017.

Where is Sierra Howell located?

Sierra Howell practices at 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (301) 295-8901.

What is Sierra Howell's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

When was this NPI record last updated?

The NPPES record for Sierra Howell was last updated on November 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.