DIANA DIAZ CNM
NPI 1033097555
Advanced Practice Midwife in Greenbrae, CA

Active since August 22, 2025PECOS Enrolled
250 BON AIR RD, GREENBRAE, CA 94904(415) 925-7000 Get Directions Write a Review

NPPES record last updated: February 12, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Diana Diaz Cnm NPPES

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

DIANA DIAZ CNM (NPI 1033097555) is an individual advanced practice midwife in Greenbrae, California, licensed in California (NMW236582) and active in the NPI registry since August 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1033097555
Entity TypeIndividualFemale
Primary Taxonomy367A00000X
Provider Legal NameDIANA DIAZCredential: CNM
Location Address250 BON AIR RDGreenbrae, CA 94904-1702
Mailing Address250 Bon Air RdGreenbrae, CA 94904-1702 · (415) 925-7000
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 22, 2025
Last NPPES UpdateFebruary 12, 2026
NPPES CertifiedFebruary 12, 2026
NPI 1033097555 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 CA · NMW236582
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.

250 BON AIR RD, Greenbrae, CA 94904

Other Names 1

Former Name (1)Diana Tenjo Barrera

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Diana Diaz Cnm is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2264913482
PECOS Enrollment IDI20260225004347
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 94904 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
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
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.

Registered Nurse (Psychiatric/Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Internal Medicine
250 BON AIR RD, 3RD FLOOR
GREENBRAE, CA 94904
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Rehabilitation Practitioner
250 BON AIR RD
GREENBRAE, CA 94904
Counselor (Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Advanced Practice Midwife
250 BON AIR RD
GREENBRAE, CA 94904
Registered Nurse
250 BON AIR RD
GREENBRAE, CA 94904

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 Diana Diaz's NPI number?

The NPI number for Diana Diaz is 1033097555. It was assigned to this individual provider in the NPPES registry on August 22, 2025. The provider is also known as Diana Tenjo Barrera.

Where is Diana Diaz located?

Diana Diaz practices at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 925-7000.

What is Diana Diaz's specialty?

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

Is Diana Diaz enrolled in Medicare?

Yes. Diana Diaz is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Diana Diaz was last updated on February 12, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.