Theodore K. Gregorius, M.D.
Orthopaedic Surgery Physician · Newport Beach, CA
Theodore K. Gregorius, M.D. is an orthopaedic surgery physician with a practice address in Newport Beach, California, and NPI 1013950450, issued on Jun 14, 2006. Check the license (California A84930, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Theodore K. Gregorius
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- A84930 CA
Self-reported in NPPES; status is on the state search - Practice location
- 360 San Miguel Dr Ste 701, Newport Beach, CA 92660
- Phone
- (949) 759-3600
- Enumerated
- Jun 14, 2006
- Record last updated
- Feb 3, 2022
- Fax
- (949) 759-5017
- Medicare enrollment
- Enrolled (PECOS I20051219000214); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 360 San Miguel Dr Ste 701
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tatum Ohana, PA-CPhysician Assistant1932867447
Verify Theodore K. Gregorius in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
110 Medicare Part D claims for 30 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. 34 claims were for opioids.
Most prescribed
- Gabapentin33 claims
- Hydrocodone-Acetaminophen25 claims
- Ondansetron Odt20 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,500.00
1 payment: compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Arthrex, Inc. 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
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore K. Gregorius among 2,276 orthopaedic surgery physician records in California
Theodore K. Gregorius, 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2000 · median 2003 among the 1,347 with a school on file
- Record last updated2022 · 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 Newport Beach → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Zachary Adler, MDNewport Beach, CA 926601396884391
- Taylor Dunphy, M.D.Newport Beach, CA 926601063832277
- Scott Forman, M.D.Newport Beach, CA 926601306881842
- David Gazzaniga, MDNewport Beach, CA 926601720001423
- Michael Hunter, M.D.Newport Beach, CA 926601346622040
- Warren Kramer, MDNewport Beach, CA 926601700997038
- Corey Lieber, MDNewport Beach, CA 926601104946086
- Ram Mudiyam, MDNewport Beach, CA 926601417957093
Common questions
What is Theodore K. Gregorius, M.D.'s NPI number?
Theodore K. Gregorius, M.D.'s National Provider Identifier (NPI) is 1013950450, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Theodore K. Gregorius, M.D. located?
The NPPES record lists a practice address at 360 San Miguel Dr Ste 701, Newport Beach, CA, 92660. Phone: (949) 759-3600. Providers update this record themselves, so call before visiting.
How can I verify Theodore K. Gregorius, M.D.'s license?
NPPES lists California license number A84930, 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 Theodore K. Gregorius, M.D. prescribe under Medicare Part D?
In 2024, Theodore K. Gregorius, M.D. had 110 Medicare Part D claims for 30 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Theodore K. Gregorius, 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.