EILEEN IBETH MONTALVAN FERNANDEZ MD
NPI 1437775400
Internal Medicine - Endocrinology, Diabetes & Metabolism in Tucson, AZ

Q: What is Eileen Montalvan Fernandez's NPI number?

The NPI number for Eileen Montalvan Fernandez is 1437775400. It was assigned to this individual provider in the NPPES registry on June 24, 2020.

Q: What is Eileen Montalvan Fernandez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since June 24, 2020PECOS EnrolledAccepts Medicare Assignment

3838 N CAMPBELL AVE BLDG 2, TUCSON, AZ 85719(520) 694-8888(520) 694-2251 Get Directions Write a Review

NPPES record last updated: August 1, 2023. Verified against the NPPES registry weekly; last sync: September 06, 2026.

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About Eileen Ibeth Montalvan Fernandez Md NPPES

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

EILEEN IBETH MONTALVAN FERNANDEZ MD (NPI 1437775400) is an individual endocrinology, diabetes & metabolism provider in Tucson, Arizona, licensed in Arizona (R79927) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Florence, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1437775400

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameEILEEN IBETH MONTALVAN FERNANDEZCredential: MD

Location Address3838 N CAMPBELL AVE BLDG 2Tucson, AZ 85719-1454

Mailing Address3838 N Campbell Ave Bldg 2Tucson, AZ 85719-1454 · (520) 694-8888 · Fax (520) 874-2251

Phone(520) 694-8888

Fax(520) 694-2251

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateJune 24, 2020

Last NPPES UpdateAugust 1, 2023

NPPES CertifiedAugust 1, 2023

✔ NPI 1437775400 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in AZ · R79927

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

3838 N CAMPBELL AVE BLDG 2, Tucson, AZ 85719

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Secondary Practice Location 1

Location 11701 Veterans DrFlorence, AL 35630-4928 · Phone (256) 629-1950

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc. and more.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

Eileen Ibeth Montalvan Fernandez 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 ID5496267841

PECOS Enrollment IDI20250623002076

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 85719 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

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

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.

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.

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