Stephen T. Gardner, M.D.
Orthopaedic Surgery Physician · Mission Viejo, CA
Stephen T. Gardner, M.D. is an orthopaedic surgery physician with a practice address in Mission Viejo, California, and NPI 1871753392, issued on Jun 10, 2008. Check the license (California A124837, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen T. Gardner
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- A124837 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26401 Crown Valley Pkwy Ste 101, Mission Viejo, CA 92691
- Phone
- (949) 348-4000
- Enumerated
- Jun 10, 2008
- Record last updated
- Dec 4, 2024
- Medicare enrollment
- Enrolled (PECOS I20140909001528); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 26401 Crown Valley Pkwy Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Chen, M.D.Adult Reconstructive Orthopaedic Surgery Physician1104210152
- Sydney CohenPhysician Assistant1437986171
- Connor GalbraithPhysician Assistant1619783156
- Evan Guerrero, M.D.Orthopaedic Hand Surgery Physician1346635125
- Tiva Hanjan, M.D.Physical Medicine & Rehabilitation Physician1689729253
- Omid Jalali, MDOrthopaedic Surgery of the Spine Physician1982227526
Verify Stephen T. Gardner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
295 Medicare Part D claims for 145 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 44 claims were for opioids.
Most prescribed
- Celecoxib90 claims
- Cephalexin62 claims
- Diclofenac Sodium31 claims
- Methylprednisolone22 claims
- Meloxicam13 claims
- Tramadol Hcl12 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: $1,009.24
13 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Community Orthopedic Medical GroupMission Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen T. Gardner among 2,276 orthopaedic surgery physician records in California
Stephen T. Gardner, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 65% of them.
- NPI issued2008 · 65% of these records are older, 31% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2008 · median 2003 among the 1,347 with a school on file
- Record last updated2024 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Mission Viejo → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Kent Adamson, MDMission Viejo, CA 926911043277312
- Michael Burdi, MDMission Viejo, CA 926911801853189
- Richard Claveria, M.D.Mission Viejo, CA 926911689637761
- Daniel Duggan, D.O.Mission Viejo, CA 926911750575437
- Mark Ishimaru, MDMission Viejo, CA 926911821041161
- Michael Marandola, MDMission Viejo, CA 926911013974393
- Kent Marangi, MDMission Viejo, CA 926911477510758
- John Morris, MDMission Viejo, CA 926911396703161
Common questions
What is Stephen T. Gardner, M.D.'s NPI number?
Stephen T. Gardner, M.D.'s National Provider Identifier (NPI) is 1871753392, issued on Jun 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Stephen T. Gardner, M.D. located?
The NPPES record lists a practice address at 26401 Crown Valley Pkwy Ste 101, Mission Viejo, CA, 92691. Phone: (949) 348-4000. Providers update this record themselves, so call before visiting.
How can I verify Stephen T. Gardner, M.D.'s license?
NPPES lists California license number A124837, 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 Stephen T. Gardner, M.D. prescribe under Medicare Part D?
In 2024, Stephen T. Gardner, M.D. had 295 Medicare Part D claims for 145 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Stephen T. Gardner, 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.