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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RUBEN ALMAGUER M.D.
NPI 1043204886
Family Medicine in Pasadena, TX

Active since September 08, 2005PECOS EnrolledCLIA 45D1045981 · Waiver
3351 PLAINVIEW ST, SUITE A-7, PASADENA, TX 77504(713) 943-3582(713) 910-4440 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Ruben Almaguer M.d. NPPES

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

DR. RUBEN ALMAGUER M.D. (NPI 1043204886) is an individual family medicine provider in Pasadena, Texas, licensed in Texas (H7864) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through September 26, 2027, and is affiliated with St Luke's Patients Medical Center.

NPPES Registry Identity

NPI1043204886
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. RUBEN ALMAGUERCredential: M.D.
Location Address3351 PLAINVIEW ST, SUITE A-7Pasadena, TX 77504-1985
Mailing AddressPo Box 1090Deer Park, TX 77536-1090 · (713) 943-3582 · Fax (713) 910-4440
Phone(713) 943-3582
Fax(713) 910-4440
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateSeptember 8, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1043204886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in TX · H7864
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.
3351 PLAINVIEW ST, Pasadena, TX 77504
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ruben Almaguer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9335110568
PECOS Enrollment IDI20040803000333
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D1045981

Ruben Almaguer, MD, PA · Pasadena, TX
Active · expires Sep 26, 2027
CLIA Number45D1045981
Laboratory TypePhysician Office
Certificate Effective DateSeptember 27, 2025
Certificate Expiration DateSeptember 26, 2027
Laboratory DirectorRuben Almaguer, MD
Laboratory Phone(281) 487-5900
Laboratory LocationRuben Almaguer, MD, PA4102 Woodlawn, Suite 100, Pasadena, TX 77504
CLIA data matches this NPI record on: Name
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 6

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.

Injection, dexamethasone sodium phosphate, 1 mg J1100
Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.
448 services44 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.
138 services77 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
73 services47 patients
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.
72 services47 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
53 services53 patients
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402
An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

St Luke's Patients Medical Center

Acute Care Hospitals · Pasadena, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number670031
Location4600 East Sam Houston Parkway SouthPasadena, TX 77505 · Harris County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77504 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
$90.40 typical visit price
range $58.24 – $176.98
Typical copayment $22.60 (range $14.56 – $44.24)
Most-billed visit code 99203
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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 4

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

PLAINVIEW PSYCHIATRY LLC
Psychiatry & Neurology (Psychiatry)
3351 PLAINVIEW ST, STE A-6
PASADENA, TX 77504
Harris County (713) 947-3000
AFTER HOURS PEDIATRIC CENTER
Pediatrics
3351 PLAINVIEW ST, SUITE A - 5
PASADENA, TX 77504
Harris County (713) 947-1770
AFTER HOURS PEDIATRIC CENTER
Clinic/Center
3351 PLAINVIEW ST, #A5
PASADENA, TX 77504
Harris County (713) 947-1770
DR. JOHN WARREN WATKINS D.D.S.
Dentist (General Practice)
3351 PLAINVIEW ST, SUITE 1A
PASADENA, TX 77504
Harris County (713) 943-0064

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 Ruben Almaguer's NPI number?

The NPI number for Ruben Almaguer is 1043204886. It was assigned to this individual provider in the NPPES registry on September 8, 2005.

Where is Ruben Almaguer located?

Ruben Almaguer practices at 3351 Plainview St Suite A-7, Pasadena, TX 77504. The listed phone number is (713) 943-3582.

What is Ruben Almaguer's specialty?

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

Is Ruben Almaguer enrolled in Medicare?

Yes. Ruben Almaguer is registered in the Medicare PECOS enrollment system.

Does Ruben Almaguer hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D1045981) is associated with this NPI, valid through September 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Ruben Almaguer accept?

Health plans from UnitedHealthcare list Ruben Almaguer 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 Ruben Almaguer affiliated with any hospitals?

According to CMS data, Ruben Almaguer is affiliated with St Luke's Patients Medical Center.

When was this NPI record last updated?

The NPPES record for Ruben Almaguer was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.