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MARUJA DEL VALLE DIAZ ARJONILLA MD
NPI 1841481074
Internal Medicine - Endocrinology, Diabetes & Metabolism in Santa Ana, CA

Active since August 05, 2007PECOS EnrolledAccepts Medicare Assignment
2212 E 4TH ST STE 304, SANTA ANA, CA 92705(714) 288-3230(714) 571-7719 Get Directions Write a Review

NPPES record last updated: October 21, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 21, 2020, Dec 27, 2018 (2 updates tracked since 2018).

About Maruja Del Valle Diaz Arjonilla Md NPPES

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

MARUJA DEL VALLE DIAZ ARJONILLA MD (NPI 1841481074) is an individual endocrinology, diabetes & metabolism provider in Santa Ana, California, licensed in California (A97144) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Rocklin, and is a graduate of Other (1990).

NPPES Registry Identity

NPI1841481074
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameMARUJA DEL VALLE DIAZ ARJONILLACredential: MD
Location Address2212 E 4TH ST STE 304Santa Ana, CA 92705
Mailing Address2212 E 4th St Ste 304Santa Ana, CA 92705-3873 · (714) 288-3230 · Fax (714) 571-7719
Phone(714) 288-3230
Fax(714) 571-7719
Sole ProprietorNo
Medical School CMSOtherGraduated 1990
Enumeration DateAugust 5, 2007
Last NPPES UpdateOctober 21, 20202 updates tracked since enumeration
NPPES CertifiedOctober 21, 2020
✔ NPI 1841481074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A97144
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.
2212 E 4TH ST STE 304, Santa Ana, CA 92705
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Other Names 1

Other Name (5)Maruja Del Valle Diaz Romero Md

Secondary Practice Location 1

Location 11160 Sunset BlvdRocklin, CA 85765-3772 · Phone (916) 865-1000 · Fax (816) 865-1005

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

Maruja Del Valle Diaz Arjonilla 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 ID4082771787
PECOS Enrollment IDI20090325000198
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 8

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.
259 services106 patients
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251
This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.
64 services21 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
41 services21 patients
Ultrasound scan of head and neck soft tissue 76536
An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.
32 services28 patients
Blood glucose (sugar) test performed by hand-held instrument 82962
A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.
21 services19 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.
21 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92705 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Referred Medical Equipment & Supplies CMS DME claims 3

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
20 suppliers63 claims181 services$6.19 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
15 suppliers35 claims59 services$1.08 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
4 suppliers39 claims39 services$194.41 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Maruja Diaz Arjonilla's NPI number?

The NPI number for Maruja Diaz Arjonilla is 1841481074. It was assigned to this individual provider in the NPPES registry on August 5, 2007. The provider is also known as Maruja Del Valle Diaz Romero MD.

Where is Maruja Diaz Arjonilla located?

Maruja Diaz Arjonilla practices at 2212 E 4th St Ste 304, Santa Ana, CA 92705. The listed phone number is (714) 288-3230.

What is Maruja Diaz Arjonilla's specialty?

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

Is Maruja Diaz Arjonilla enrolled in Medicare?

Yes. Maruja Diaz Arjonilla 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.

When was this NPI record last updated?

The NPPES record for Maruja Diaz Arjonilla was last updated on October 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.