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DR. ELSI MARIA DIAZ MD
NPI 1487972477
Family Medicine in Tucson, AZ

Active since May 14, 2010PECOS EnrolledAccepts Medicare Assignment
89.28/100
CMS Quality Rating
3728 S 16TH AVE, TUCSON, AZ 85713(888) 478-8432(520) 314-0070 Get Directions Write a Review

NPPES record last updated: December 23, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 23, 2025, Jan 27, 2021, Sep 2, 2020 and 3 more (6 updates tracked since 2019).

About Dr. Elsi Maria Diaz Md NPPES

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

DR. ELSI MARIA DIAZ MD (NPI 1487972477) is an individual family medicine provider in Tucson, Arizona, licensed in Arizona (43414) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1487972477
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. ELSI MARIA DIAZCredential: MD
Location Address3728 S 16TH AVETucson, AZ 85713-6080
Mailing Address3728 S 16th AveTucson, AZ 85713-6080 · (888) 478-8432 · Fax (520) 314-0070
Phone(888) 478-8432
Fax(520) 314-0070
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateMay 14, 2010
Last NPPES UpdateDecember 23, 20256 updates tracked since enumeration
NPPES CertifiedDecember 23, 2025
✔ NPI 1487972477 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in AZ · 43414
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3728 S 16TH AVE, Tucson, AZ 85713
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Other Names 1

Other Name (5)Elsi Maria Diaz-hernandez Md

Other Identifiers 1

Medicaid531955AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Imperial Insurance Companies, Inc..Insurance ›

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. Elsi Maria Diaz Md 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 ID1254527310
PECOS Enrollment IDI20101201000585
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 7

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
316 services197 patients
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454
This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.
273 services34 patients
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457
This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.
65 services28 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
36 services31 patients
Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment 99453
Remote monitoring of physiologic parameters involves using special equipment to track vital signs like heart rate and blood pressure from a distance. The initial set-up includes installing the device and teaching the patient how to use it correctly for accurate readings.
17 services17 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85713 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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality78.56
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers14 claims56 services$5.18 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

LOHENGRIN JIMENEZ FNP
Nurse Practitioner (Family)
3728 S 16TH AVE
TUCSON, AZ 85713
Pima County (888) 478-8432
SUVIDA HEALTHCARE CLINICAL SERVICES LLC
Clinic/Center (Multi-Specialty)
3728 S 16TH AVE
TUCSON, AZ 85713
Pima County (520) 613-2967

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 Elsi Diaz's NPI number?

The NPI number for Elsi Diaz is 1487972477. It was assigned to this individual provider in the NPPES registry on May 14, 2010. The provider is also known as Elsi Maria Diaz-Hernandez MD.

Where is Elsi Diaz located?

Elsi Diaz practices at 3728 S 16th Ave, Tucson, AZ 85713. The listed phone number is (888) 478-8432.

What is Elsi Diaz's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Elsi Diaz enrolled in Medicare?

Yes. Elsi Diaz 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.

What insurance does Elsi Diaz accept?

Health plans from Imperial Insurance Companies, Inc. list Elsi Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Elsi Diaz was last updated on December 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.