Thomas Gregory Harris, M.D.
Orthopaedic Foot and Ankle Surgery Physician · Pasadena, CA
Thomas Gregory Harris, M.D. is an orthopaedic foot and ankle surgery physician with a practice address in Pasadena, California, and NPI 1801815428, issued on Jul 18, 2006. Check the license (California A90250, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Gregory Harris
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
- License number
- A90250 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 S Raymond Ave, Pasadena, CA 91105
- Phone
- (626) 795-8051
- Enumerated
- Jul 18, 2006
- Record last updated
- Jun 27, 2024
- Fax
- (626) 795-0356
- Medicare enrollment
- Enrolled (PECOS I20050705000701); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest orthopaedic foot and ankle surgery physician records → All 71 in California → Look up another NPI →
Also registered at 800 S Raymond Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregory Adamson, M.D.Sports Medicine (Orthopaedic Surgery) Physician1972590610
- Lea Armendariz, PTPhysical Therapist1427327147
- Roy Ashford, M.D.Orthopaedic Surgery of the Spine Physician1588646368
- Julie Cann, PA-CPhysician Assistant1972734929
- William Costigan, M.D.Orthopaedic Surgery of the Spine Physician1821084641
- Richard Diehl, M.D.Orthopaedic Surgery Physician1417943127
Verify Thomas Gregory Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A90250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average orthopaedic foot and ankle surgery physician in 2024
612 Medicare Part D claims for 225 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 305 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen128 claims
- Gabapentin89 claims
- Hydrocodone-Acetaminophen84 claims
- Tramadol Hcl72 claims
- Methylprednisolone28 claims
- Ibuprofen25 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $438,022.92
221 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 643 providers of this specialty with any payment received $23,314.63 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
- Cedars-Sinai Medical Care FoundationPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Gregory Harris among 71 orthopaedic foot and ankle surgery physician records in California
Thomas Gregory Harris, M.D. is one of 71 orthopaedic foot and ankle 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 63% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2000 · median 2008 among the 51 with a school on file
- Record last updated2024 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Foot and Ankle Surgery Physician providers in California
There are 71 orthopaedic foot and ankle surgery physician records in California.
All 71 in California → Every provider in Pasadena → Orthopaedic Foot and Ankle Surgery Physician nationwide →
The 8 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes
- Brent Kokubun, MDPasadena, CA 911051538691829
- Braden Criswell, M.D.Pasadena, CA 911071851568117
- Timothy Rearick, MDThousand Oaks, CA 913601386903821
- Ronald Smith, M.D.Long Beach, CA 908061801899398
- Jonathan Jaivin, M.D.Van Nuys, CA 914051376561563
- Mark Mikhael, M.D.Burbank, CA 915051346446101
- Kenneth Park, M.D.Torrance, CA 905031881895316
- Vu Le, MDAlhambra, CA 918011396227153
Common questions
What is Thomas Gregory Harris, M.D.'s NPI number?
Thomas Gregory Harris, M.D.'s National Provider Identifier (NPI) is 1801815428, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Gregory Harris, M.D. located?
The NPPES record lists a practice address at 800 S Raymond Ave, Pasadena, CA, 91105. Phone: (626) 795-8051. Providers update this record themselves, so call before visiting.
How can I verify Thomas Gregory Harris, M.D.'s license?
NPPES lists California license number A90250, 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 Thomas Gregory Harris, M.D. prescribe under Medicare Part D?
In 2024, Thomas Gregory Harris, M.D. had 612 Medicare Part D claims for 225 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.
What is Thomas Gregory Harris, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.