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ARVI MALLARI GENEROSO M.D.
NPI 1104104025
Internal Medicine in Castl Rock, WA

Active since July 26, 2011PECOS Enrolled
23 COWLITZ W ST, CASTL ROCK, WA 98611(360) 800-9480(360) 800-9486 Get Directions Write a Review

NPPES record last updated: September 30, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 30, 2022, Dec 14, 2021 (2 updates tracked since 2021).

About Arvi Mallari Generoso M.d. NPPES

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

ARVI MALLARI GENEROSO M.D. (NPI 1104104025) is an individual internal medicine provider in Castl Rock, Washington, licensed in Washington (MD60441564) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS, is affiliated with Providence Centralia Hospital, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1104104025
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameARVI MALLARI GENEROSOCredential: M.D.
Location Address23 COWLITZ W STCastl Rock, WA 98611
Mailing AddressPo Box 1163Castle Rock, WA 98611-1163 · (360) 800-9480 · Fax (360) 800-9486
Phone(360) 800-9480
Fax(360) 800-9486
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateJuly 26, 2011
Last NPPES UpdateSeptember 30, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2022
✔ NPI 1104104025 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD60441564
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
23 COWLITZ W ST, Castl Rock, WA 98611
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Other Names 1

Former Name (1)Arvi Pastoral Mallari M.d.

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Arvi Mallari Generoso M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6406089853
PECOS Enrollment IDI20140812000037
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 Reassignment

Medicare enrollment records show Arvi Generoso reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Generoso Health LLC
Same address
Clinic/Center
23 COWLITZ W
Castle Rock, WA 98611
  • Reassigned Medicare billing, Washington enrollment
NPI 1932866134 (872) 395-1626

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 3

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 high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
235 services79 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.
139 services60 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
25 services25 patients

Hospital Affiliations CMS Care Compare 2

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

Providence Centralia Hospital

Acute Care Hospitals · Centralia, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number500019
Location914 S Scheuber RoadCentralia, WA 98531 · Lewis County
Emergency services Birthing friendly

Peacehealth St John Medical Center

Acute Care Hospitals · Longview, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500041
Location1615 Delaware StreetLongview, WA 98632 · Cowlitz County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98611 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
$130.99 typical visit price
range $57.27 – $172.80
Typical copayment $32.74 (range $14.31 – $43.20)
Most-billed visit code 99204
Established Patient
$100.78 typical visit price
range $18.56 – $141.11
Typical copayment $25.19 (range $4.64 – $35.27)
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 7

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
10 suppliers41 claims112 services$6.66 avg. paid by Medicare
Normal, low and high calibrator solution / chips A4256
DME-Other DME · category DE000N
2 suppliers13 claims14 services$2.79 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers20 claims22 services$1.14 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers26 claims26 services$15.61 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers67 claims67 services$86.79 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
2 suppliers21 claims21 services$32.49 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 Arvi Generoso's NPI number?

The NPI number for Arvi Generoso is 1104104025. It was assigned to this individual provider in the NPPES registry on July 26, 2011. The provider is also known as Arvi Pastoral Mallari M.D..

Where is Arvi Generoso located?

Arvi Generoso practices at 23 Cowlitz W St, Castl Rock, WA 98611. The listed phone number is (360) 800-9480.

What is Arvi Generoso's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Arvi Generoso enrolled in Medicare?

Yes. Arvi Generoso is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Arvi Generoso's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arvi Generoso reassigns Medicare benefits to Generoso Health LLC (Castle Rock, WA). The 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 Arvi Generoso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Arvi Generoso accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Arvi Generoso 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 Arvi Generoso affiliated with any hospitals?

According to CMS data, Arvi Generoso is affiliated with Providence Centralia Hospital and Peacehealth St John Medical Center.

When was this NPI record last updated?

The NPPES record for Arvi Generoso was last updated on September 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.