Semon Bader, M.D.
Sports Medicine (Orthopaedic Surgery) Physician · Concord, CA
Semon Bader, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Concord, California, and NPI 1750581278, issued on Jul 23, 2007. Check the license (California A98350, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Semon Bader
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
- License number
- A98350 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Sutter St Ste 100, Concord, CA 94520
- Phone
- (925) 939-8585
- Enumerated
- Jul 23, 2007
- Record last updated
- Nov 7, 2025
- Fax
- (925) 933-2709
- Medicare enrollment
- Enrolled (PECOS I20080527000824); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →
Also registered at 1800 Sutter St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jason Agdinaoay, PT, DPTOrthopedic Physical Therapist1790396901
- Marci Baptista, OTHand Occupational Therapist1134154354
- Nicholas Benson, PA-CSurgical Physician Assistant1366391963
- Ryan Chacko, DPTOrthopedic Physical Therapist1306612593
- Devin Clark, PTOrthopedic Physical Therapist1477259125
- Liam Harris, MDOrthopaedic Surgery of the Spine Physician1023544327
Verify Semon Bader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average sports medicine (orthopaedic surgery) physician in 2024
66 Medicare Part D claims for 40 beneficiaries, against an average of 288 among the 2,562 providers of this specialty who prescribed in Part D.
Most prescribed
- Methylprednisolone19 claims
- Ibuprofen15 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $7,267.05
38 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 2,400 providers of this specialty with any payment received $19,779.31 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
- Golden State Orthopedics And SpineConcord, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Semon Bader among 384 sports medicine (orthopaedic surgery) physician records in California
Semon Bader, M.D. is one of 384 sports medicine (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 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 43% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2005 · median 2003 among the 293 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Orthopaedic Surgery) Physician providers in California
There are 384 sports medicine (orthopaedic surgery) physician records in California.
All 384 in California → Every provider in Concord → Sports Medicine (Orthopaedic Surgery) Physician nationwide →
The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes
- Adam Brooks, M.D.Antioch, CA 945091407167703
- Stephen Franzino, MDFremont, CA 945361114037033
- Russell Nord, M.D.Fremont, CA 945361245436542
- Benjamin Halligan, MDFremont, CA 945381972715985
- Kerisimasi Reynolds, D.O.Fremont, CA 945381518282920
- Fred Blackwell, M.D.Alameda, CA 945011386771186
- James Distefano, M.D.Alameda, CA 945011942513882
- Gregg Pottorff, M.D.Castro Valley, CA 945461477520096
Common questions
What is Semon Bader, M.D.'s NPI number?
Semon Bader, M.D.'s National Provider Identifier (NPI) is 1750581278, issued on Jul 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Semon Bader, M.D. located?
The NPPES record lists a practice address at 1800 Sutter St Ste 100, Concord, CA, 94520. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.
How can I verify Semon Bader, M.D.'s license?
NPPES lists California license number A98350, 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 Semon Bader, M.D. prescribe under Medicare Part D?
In 2024, Semon Bader, M.D. had 66 Medicare Part D claims for 40 beneficiaries; the average among sports medicine (orthopaedic surgery) physician prescribers was 288. Part D covers Medicare prescriptions only.
What is Semon Bader, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.