Casimir Larkin Dowd, MD
Orthopaedic Hand Surgery Physician · Los Gatos, CA
Casimir Larkin Dowd, MD is an orthopaedic hand surgery physician with a practice address in Los Gatos, California, and NPI 1720303530, issued on Apr 5, 2010. Check the license (California A117198, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Casimir Larkin Dowd
- Credential
- MD
- Primary taxonomy
- Orthopaedic Hand Surgery Physician 207XS0106X
- License number
- A117198 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15720 Winchester Blvd, Los Gatos, CA 95030
- Phone
- (650) 934-7111
- Enumerated
- Apr 5, 2010
- Record last updated
- Dec 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150730014194); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest orthopaedic hand surgery physician records → All 288 in California → Look up another NPI →
Also registered at 15720 Winchester Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Casimir Larkin Dowd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A117198Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average orthopaedic hand surgery physician in 2024
46 Medicare Part D claims for 27 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 22 claims were for opioids.
Most prescribed
- Tramadol Hcl19 claims
- Ibuprofen14 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.
Industry payments in 2024: $38.40
1 payment: food and beverage; the largest payer was Axogen. The 1,819 providers of this specialty with any payment received $5,529.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Casimir Larkin Dowd among 288 orthopaedic hand surgery physician records in California
Casimir Larkin Dowd, MD is one of 288 orthopaedic hand surgery physician records with a practice address in California. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 72% of them.
- NPI issued2010 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2009 · median 2004 among the 214 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0106X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Hand Surgery Physician providers in California
There are 288 orthopaedic hand surgery physician records in California.
All 288 in California → Every provider in Los Gatos → Orthopaedic Hand Surgery Physician nationwide →
The 8 orthopaedic hand surgery physician records with the nearest ZIP codes
- Reginald McCoy, M.D.Los Gatos, CA 950301902957178
- Delaney Keane, DOLos Gatos, CA 950321689137879
- Kenneth Mensch, MDCapitola, CA 950101538556576
- Tung Le, MDSanta Clara, CA 950511609955343
- Rajveen Sendher, MD, FRCSC, MHSCCampbell, CA 950081003191396
- Stephanie Gancarczyk, M.D.San Jose, CA 951191467746024
- Katherine Gray, M.D.San Jose, CA 951191265631741
- Eric Kagel, M.D.San Jose, CA 951241104822030
Common questions
What is Casimir Larkin Dowd, MD's NPI number?
Casimir Larkin Dowd, MD's National Provider Identifier (NPI) is 1720303530, issued on Apr 5, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Casimir Larkin Dowd, MD located?
The NPPES record lists a practice address at 15720 Winchester Blvd, Los Gatos, CA, 95030. Phone: (650) 934-7111. Providers update this record themselves, so call before visiting.
How can I verify Casimir Larkin Dowd, MD's license?
NPPES lists California license number A117198, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Casimir Larkin Dowd, MD prescribe under Medicare Part D?
In 2024, Casimir Larkin Dowd, MD had 46 Medicare Part D claims for 27 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. 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.