Arvi Mallari Generoso, M.D.
Internal Medicine Physician · Castl Rock, WA
Arvi Mallari Generoso, M.D. is an internal medicine physician with a practice address in Castl Rock, Washington, and NPI 1104104025, issued on Jul 26, 2011. Check the license (Washington MD60441564, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Arvi Mallari Generoso
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD60441564 WA
Self-reported in NPPES; status is on the state search - Practice location
- 23 Cowlitz W St, Castl Rock, WA 98611
- Phone
- (360) 800-9480
- Enumerated
- Jul 26, 2011
- Record last updated
- Sep 30, 2022
- Fax
- (360) 800-9486
- Medicare enrollment
- Enrolled (PECOS I20140812000037); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Verify Arvi Mallari Generoso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60441564Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,362 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 11 claims were for opioids.
Most prescribed
- Levothyroxine Sodium102 claims
- Atorvastatin Calcium64 claims
- Amlodipine Besylate62 claims
- Lisinopril52 claims
- Losartan Potassium45 claims
- Albuterol Sulfate Hfa37 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Arvi Mallari Generoso among 3,079 internal medicine physician records in Washington
Arvi Mallari Generoso, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 65% of them.
- NPI issued2011 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2006 among the 1,852 with a school on file
- Record last updated2022 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Washington
There are 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Megan Emad, MDCamas, WA 986071205474574
- Alma Fe Houghton, M.D.Camas, WA 986071679006852
- Jaspreet Khangura, M.D.Camas, WA 986071194983593
- John Nelson, M.D.Camas, WA 986071962510867
- Neha Patel, M.D.Camas, WA 986071811147093
- Daniel Spyker, PHD, MDCamas, WA 986071871975615
- Alexander Dreisin, MBBS, MDBattle Ground, WA 986041255868592
- Navin Nagaraj, MDBattle Ground, WA 986041154586238
Common questions
What is Arvi Mallari Generoso, M.D.'s NPI number?
Arvi Mallari Generoso, M.D.'s National Provider Identifier (NPI) is 1104104025, issued on Jul 26, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Arvi Mallari Generoso, M.D. located?
The NPPES record lists a practice address at 23 Cowlitz W St, Castl Rock, WA, 98611. Phone: (360) 800-9480. Providers update this record themselves, so call before visiting.
How can I verify Arvi Mallari Generoso, M.D.'s license?
NPPES lists Washington license number MD60441564, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Arvi Mallari Generoso, M.D. prescribe under Medicare Part D?
In 2024, Arvi Mallari Generoso, M.D. had 1,362 Medicare Part D claims for 134 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.