Matthew Siljander, MD
Adult Reconstructive Orthopaedic Surgery Physician · Newport Beach, CA
Matthew Siljander, MD is an adult reconstructive orthopaedic surgery physician with a practice address in Newport Beach, California, and NPI 1831509355, issued on May 6, 2014. Check the license (California A167823, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew Siljander
- Credential
- MD
- Primary taxonomy
- Adult Reconstructive Orthopaedic Surgery Physician 207XS0114X
- License numbers
- A167823 CA
4301105181 MI
65225 MN
Self-reported in NPPES; status is on the state search - Practice location
- 22 Corporate Plaza Dr, Newport Beach, CA 92660
- Phone
- (949) 722-7038
- Enumerated
- May 6, 2014
- Record last updated
- Jul 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (949) 630-4900
- Entity
- Type 1 · individual
8 nearest adult reconstructive orthopaedic surgery physician records → All 147 in California → Look up another NPI →
Also registered at 22 Corporate Plaza Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zachary Adler, MDOrthopaedic Surgery Physician1396884391
- Joyce Anderson, R.N.F.A.Registered Nurse First Assistant1952630006
- Justin Anderson, PA-CSurgical Physician Assistant1487924007
- Nicholas Bacher, MDPain Medicine (Anesthesiology) Physician1972130771
- Dennis Bansil, PA-CPhysician Assistant1740629047
- Lindsay Baumhefner, PA-CMedical Physician Assistant1043398977
Verify Matthew Siljander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A167823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% more Medicare Part D claims than the average adult reconstructive orthopaedic surgery physician in 2024
965 Medicare Part D claims for 289 beneficiaries, against an average of 579 among the 1,112 providers of this specialty who prescribed in Part D. Brand-name drugs were 1% of claims. 345 claims were for opioids.
Most prescribed
- Tramadol Hcl197 claims
- Meloxicam169 claims
- Methocarbamol136 claims
- Oxycodone Hcl130 claims
- Amoxicillin111 claims
- Naloxone Hcl110 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: $45,810.73
48 payments; by number, the most common kind was consulting fee; the largest payer was Encore Medical, LP. The 1,060 providers of this specialty with any payment received $68,015.27 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.
Matthew Siljander among 147 adult reconstructive orthopaedic surgery physician records in California
Matthew Siljander, MD is one of 147 adult reconstructive orthopaedic surgery physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 67% of them.
- NPI issued2014 · 67% of these records are older, 27% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2020 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0114X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Reconstructive Orthopaedic Surgery Physician providers in California
There are 147 adult reconstructive orthopaedic surgery physician records in California.
All 147 in California → Every provider in Newport Beach → Adult Reconstructive Orthopaedic Surgery Physician nationwide →
The 8 adult reconstructive orthopaedic surgery physician records with the nearest ZIP codes
- James Caillouette, M.D.Newport Beach, CA 926601467489492
- Steven Gausewitz, M.D.Newport Beach, CA 926601215979695
- Nader Nassif, M.D.Newport Beach, CA 926601629262183
- Larry Gersten, M.D.Laguna Woods, CA 926371417950064
- Abraham Kim, M.D.Laguna Woods, CA 926371902123789
- Robert Montgomery, M.D.Laguna Woods, CA 926371952304594
- Gilbert Roc, M.D.Laguna Woods, CA 926371104147172
- James Chen, M.D.Mission Viejo, CA 926911104210152
Common questions
What is Matthew Siljander, MD's NPI number?
Matthew Siljander, MD's National Provider Identifier (NPI) is 1831509355, issued on May 6, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Siljander, MD located?
The NPPES record lists a practice address at 22 Corporate Plaza Dr, Newport Beach, CA, 92660. Phone: (949) 722-7038. Providers update this record themselves, so call before visiting.
How can I verify Matthew Siljander, MD's license?
NPPES lists California license number A167823, 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 Matthew Siljander, MD prescribe under Medicare Part D?
In 2024, Matthew Siljander, MD had 965 Medicare Part D claims for 289 beneficiaries; the average among adult reconstructive orthopaedic surgery physician prescribers was 579. 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.