Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. FLAVIA DEL PILAR DIAZ-HAYS CNM
NPI 1619968567
Advanced Practice Midwife in Fort Belvoir, VA

Q: What is Flavia Diaz-hays's NPI number?

The NPI number for Flavia Diaz-hays is 1619968567. It was assigned to this individual provider in the NPPES registry on October 31, 2005.

Q: What is Flavia Diaz-hays's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

Q: When was this NPI record last updated?

The NPPES record for Flavia Diaz-hays was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days 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 October 31, 2005

9501 FARRELL RD, FORT BELVOIR, VA 22060(703) 805-0723(703) 805-0014 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mrs. Flavia Del Pilar Diaz-hays Cnm NPPES

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

MRS. FLAVIA DEL PILAR DIAZ-HAYS CNM (NPI 1619968567) is an individual advanced practice midwife in Fort Belvoir, Virginia, licensed in New Jersey (26NO08668600) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1619968567

Entity TypeIndividualFemale

Primary Taxonomy367A00000X

Provider Legal NameMRS. FLAVIA DEL PILAR DIAZ-HAYSCredential: CNM

Location Address9501 FARRELL RDFort Belvoir, VA 22060-5901

Mailing Address9756 Lorraine Carol WayLorton, VA 22079-2134 · (703) 339-5329

Phone(703) 805-0723

Fax(703) 805-0014

Sole ProprietorNo

Enumeration DateOctober 31, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1619968567 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAdvanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367A00000X

License✔ Licensed in NJ · 26NO08668600

Definition

Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. Source: American College of Nurse-Midwives, www.midwife.org Additional Resources: See the American College of Nurse-Midwives, www.midwife.org, for more information on Certified Nurse-Midwives, Certified Midwives, the American Midwifery Certification Board (AMCB), and licensure.

9501 FARRELL RD, Fort Belvoir, VA 22060

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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. VIVIANNE CISNEROS WERSEL

Audiologist

9501 FARRELL RD
FORT BELVOIR, VA 22060

Fairfax County (703) 805-8345

JENNIFER B. PETERS CNM

Advanced Practice Midwife

9501 FARRELL RD
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0599

MICHAEL ALLEN WIENER M.D.

Psychiatry & Neurology (Psychiatry)

9501 FARRELL RD, DEWITT ARMY COMMUNITY HOSPITLA
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0342

MR. SANH DAN TRIEU BS ,RPH

Pharmacist

9501 FARRELL RD
FORT BELVOIR, VA 22060

Fairfax County (571) 231-3273

DR. ARTHUR CLIFFORD WITTICH D.O.

Obstetrics & Gynecology (Gynecology)

9501 FARRELL RD, OB/GYN SERVICE
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0813

YOUN KEE CHUNG M.D.

Radiology (Diagnostic Radiology)

9501 FARRELL RD
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0599

MS. CAROL BOWSER JACKSON RN

Registered Nurse (Occupational Health)

9501 FARRELL RD, BLDG 815,RM 139
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0498

DR. ALEXANDRA MASTERSON PHARM.D.

Pharmacist (Pharmacotherapy)

9501 FARRELL RD, DEPARTMENT OF PHARMACY
FORT BELVOIR, VA 22060

Fairfax County (703) 805-0470

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 Flavia Diaz-hays's NPI number?

The NPI number for Flavia Diaz-hays is 1619968567. It was assigned to this individual provider in the NPPES registry on October 31, 2005.

Where is Flavia Diaz-hays located?

Flavia Diaz-hays practices at 9501 Farrell Rd, Fort Belvoir, VA 22060. The listed phone number is (703) 805-0723.

What is Flavia Diaz-hays's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

When was this NPI record last updated?

The NPPES record for Flavia Diaz-hays was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days 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.