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DIANA TORRES ALUYEN MD
NPI 1801230487
Hospitalist in Castroville, TX

Active since April 25, 2013PECOS EnrolledAccepts Medicare Assignment
1051 US HIGHWAY 90 E, CASTROVILLE, TX 78009(830) 931-3336 Get Directions Write a Review

NPPES record last updated: June 28, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 28, 2016, Mar 30, 2016 (2 updates tracked since 2016).

About Diana Torres Aluyen Md NPPES

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

DIANA TORRES ALUYEN MD (NPI 1801230487) is an individual hospitalist provider in Castroville, Texas, licensed in Texas (Q7826) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, is affiliated with Methodist Hospital, and is a graduate of University Of Texas Medical Branch At Galveston (2013).

NPPES Registry Identity

NPI1801230487
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDIANA TORRES ALUYENCredential: MD
Location Address1051 US HIGHWAY 90 ECastroville, TX 78009-5210
Mailing Address1051 Us Highway 90 ECastroville, TX 78009-5210 · (830) 931-3336
Phone(830) 931-3336
Sole ProprietorYes
Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 2013
Enumeration DateApril 25, 2013
Last NPPES UpdateJune 28, 20162 updates tracked since enumeration
✔ NPI 1801230487 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in TX · Q7826
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License Q7826 (TX)
1051 US HIGHWAY 90 E, Castroville, TX 78009
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Torres Aluyen 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 ID2062705023
PECOS Enrollment IDI20160728000522
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Diana Aluyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency Medicine Services Of Tx, PLLC
22 mi
Emergency Medicine
7700 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 1,452 clinicians in this Medicare group
NPI 1245938729 (210) 575-4000
Hospital Medicine Services Of Tx, PLLC
22 mi
Hospitalist
7700 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 681 clinicians in this Medicare group
NPI 1881392363 (210) 575-4000
Complete Care Medical Associates
27 mi
Hospitalist
12446 WEST AVE STE 200
San Antonio, TX 78216
  • Reassigned Medicare billing, Texas enrollment
  • 61 clinicians in this Medicare group
NPI 1609350024 (210) 525-1668

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

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.

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.
404 services114 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
317 services129 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
120 services103 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
61 services54 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
28 services27 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Methodist Hospital

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450388
Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78009 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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

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

Standard wheelchair K0001
DME-Wheelchairs · category DD000N
1 supplier11 claims11 services$15.44 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 6

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

MEDCARE IMAGING PLLC
Internal Medicine
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336
DR. JOHN WALTER MEYER M.D.
Family Medicine
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336
MR. GASPAR ALEJANDRO ROSARIO JR. PA
Physician Assistant
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336
MRS. PATRICIA LYNN AKEN APRN, BC, FNP-LPA
Nurse Practitioner
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336
DR. EMILY SULLIVAN MEYER M.D.
Family Medicine
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336
RODRIGO CRESPO
Internal Medicine
1051 US HIGHWAY 90 E
CASTROVILLE, TX 78009
Medina County (830) 931-3336

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 Aluyen's NPI number?

The NPI number for Diana Aluyen is 1801230487. It was assigned to this individual provider in the NPPES registry on April 25, 2013.

Where is Diana Aluyen located?

Diana Aluyen practices at 1051 Us Highway 90 E, Castroville, TX 78009. The listed phone number is (830) 931-3336.

What is Diana Aluyen's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Diana Aluyen enrolled in Medicare?

Yes. Diana Aluyen 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.

Which organizations bill Medicare for Diana Aluyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Aluyen reassigns Medicare benefits to 3 organizations: Emergency Medicine Services Of Tx, PLLC (San Antonio, TX), Hospital Medicine Services Of Tx, PLLC (San Antonio, TX) and Complete Care Medical Associates (San Antonio, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Aluyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Aluyen accept?

Health plans from Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Oscar Insurance Company and UnitedHealthcare list Diana Aluyen 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.

Is Diana Aluyen affiliated with any hospitals?

According to CMS data, Diana Aluyen is affiliated with Methodist Hospital.

When was this NPI record last updated?

The NPPES record for Diana Aluyen was last updated on June 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.