Christian Nabil Athanassious, M.D.
Orthopaedic Surgery Physician · Santa Rosa, CA
Christian Nabil Athanassious, M.D. is an orthopaedic surgery physician with a practice address in Santa Rosa, California, and NPI 1043471279, issued on Jun 20, 2008. Check the license (California A124589, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christian Nabil Athanassious
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- A124589 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1405 Montgomery Dr, Santa Rosa, CA 95405
- Phone
- (707) 546-1922
- Enumerated
- Jun 20, 2008
- Record last updated
- Oct 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (707) 546-1897
- Medicare enrollment
- Enrolled (PECOS I20130829000470); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 1405 Montgomery Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carolyn Bartlett, O.T., C.H.T.Hand Occupational Therapist1023176450
- Thomas Degenhardt, M.D.Orthopaedic Surgery Physician1073556635
- Rodney Dekleuver, PHYSICIAN ASSISTANTPhysician Assistant1487118105
- Patricia Hall, RPTPhysical Therapist1588876049
- Jennifer Henshaw-Lefever, PA, O.T.Physician Assistant1891997227
- Christopher Krug, PTPhysical Therapist1821200395
Verify Christian Nabil Athanassious in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124589Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
34 Medicare Part D claims for 26 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.
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): 77.9 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: $27,707.84
49 payments; by number, the most common kind was food and beverage; the largest payer was Globus Medical, 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
- Santa Rosa Orthopaedic Medical Group, Inc.Santa Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christian Nabil Athanassious among 2,276 orthopaedic surgery physician records in California
Christian Nabil Athanassious, 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 updated2014 · 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 Santa Rosa → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- James Bauer, MDSanta Rosa, CA 954051154736882
- Frederick Bennett, M.D.Santa Rosa, CA 954051205879830
- Thomas Degenhardt, M.D.Santa Rosa, CA 954051073556635
- Roger Klein, M.D.Santa Rosa, CA 954051083655252
- Michael McDermott, M.D.Santa Rosa, CA 954051750365102
- Neema Pourtaheri, MDSanta Rosa, CA 954051720272313
- Mark Schakel, M.D.Santa Rosa, CA 954051083657654
- Eric Schmidt, M.D.Santa Rosa, CA 954051720012149
Common questions
What is Christian Nabil Athanassious, M.D.'s NPI number?
Christian Nabil Athanassious, M.D.'s National Provider Identifier (NPI) is 1043471279, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Christian Nabil Athanassious, M.D. located?
The NPPES record lists a practice address at 1405 Montgomery Dr, Santa Rosa, CA, 95405. Phone: (707) 546-1922. Providers update this record themselves, so call before visiting.
How can I verify Christian Nabil Athanassious, M.D.'s license?
NPPES lists California license number A124589, 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 Christian Nabil Athanassious, M.D. prescribe under Medicare Part D?
In 2024, Christian Nabil Athanassious, M.D. had 34 Medicare Part D claims for 26 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Christian Nabil Athanassious, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.9 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.