Christopher Michael Diefenbach, MD
Orthopaedic Foot and Ankle Surgery Physician · Flagstaff, AZ
Christopher Michael Diefenbach, MD is an orthopaedic foot and ankle surgery physician with a practice address in Flagstaff, Arizona, and NPI 1437440070, issued on May 1, 2011. Check the license (Arizona 53879, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Christopher Michael Diefenbach
- Credential
- MD
- Primary taxonomy
- Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
- License number
- 53879 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 107 E Oak Ave, Flagstaff, AZ 86001
- Phone
- (928) 779-7880
- Enumerated
- May 1, 2011
- Record last updated
- Jul 21, 2022
- Fax
- (928) 913-8801
- Medicare enrollment
- Enrolled (PECOS I20160920002051); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest orthopaedic foot and ankle surgery physician records → All 19 in Arizona → Look up another NPI →
Also registered at 107 E Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Alatorre, PA-CPhysician Assistant1568870988
- Gretchen Alsip Vollbrecht, ARNPFamily Nurse Practitioner1629176052
- Jane Bigler, MDInternal Medicine Physician1285607952
- Shannon Boffeli, APRNNurse Practitioner1861582447
- Danielle Borgerding, PA-CPhysician Assistant1841626322
- Amy Britt, MDFamily Medicine Physician1558473744
Verify Christopher Michael Diefenbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 53879Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024
237 Medicare Part D claims for 101 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Meloxicam85 claims
- Gabapentin40 claims
- Baclofen33 claims
- Oxycodone-Acetaminophen27 claims
- Cephalexin11 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 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: $26,069.92
31 payments; by number, the most common kind was food and beverage; the largest payer was Acumed LLC. 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
- Reno Orthopaedic Clinic LtdReno, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Michael Diefenbach among 19 orthopaedic foot and ankle surgery physician records in Arizona
Christopher Michael Diefenbach, MD is one of 19 orthopaedic foot and ankle surgery physician records with a practice address in Arizona. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 74% of them.
- NPI issued2011 · 74% of these records are older, 16% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2011 · median 2006 among the 16 with a school on file
- Record last updated2022 · 47% 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 Arizona 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 Arizona
There are 19 orthopaedic foot and ankle surgery physician records in Arizona.
All 19 in Arizona → Every provider in Flagstaff → Orthopaedic Foot and Ankle Surgery Physician nationwide →
The 8 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes
- Stephen Knecht, MDFlagstaff, AZ 860011720050156
- Geoffrey Landis, DOTucson, AZ 857411982645719
- Gregory Walker, MDTucson, AZ 857411801250659
- Eric Anctil, MDTucson, AZ 857121528166212
- Domingo Cheleuitte, MDTucson, AZ 857121598797318
- Evan Simonson, D.P.M.Prescott, AZ 863011699063743
- Judah Pifer, M.D.Prescott, AZ 863051386854925
- Parisa Morris, MDAvondale, AZ 853921861663593
Common questions
What is Christopher Michael Diefenbach, MD's NPI number?
Christopher Michael Diefenbach, MD's National Provider Identifier (NPI) is 1437440070, issued on May 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Michael Diefenbach, MD located?
The NPPES record lists a practice address at 107 E Oak Ave, Flagstaff, AZ, 86001. Phone: (928) 779-7880. Providers update this record themselves, so call before visiting.
How can I verify Christopher Michael Diefenbach, MD's license?
NPPES lists Arizona license number 53879, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Michael Diefenbach, MD prescribe under Medicare Part D?
In 2024, Christopher Michael Diefenbach, MD had 237 Medicare Part D claims for 101 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.
What is Christopher Michael Diefenbach, MD's MIPS final score?
The 2023 MIPS final score is 77 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.