Nicholas Knoble Callahan, DO
Orthopaedic Surgery Physician · Mayfield Heights, OH
Nicholas Knoble Callahan, DO is an orthopaedic surgery physician with a practice address in Mayfield Heights, Ohio, and NPI 1659783934, issued on May 21, 2014. Check the license (Ohio 34.014321, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Nicholas Knoble Callahan
- Credential
- DO
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 34.014321 OH
Self-reported in NPPES; status is on the state search - Practice location
- 300 Allen Bradley Dr Ste 200, Mayfield Heights, OH 44124
- Phone
- (844) 746-8537
- Enumerated
- May 21, 2014
- Record last updated
- Jul 28, 2026
- Fax
- (216) 313-9166
- Medicare enrollment
- Enrolled (PECOS I20200610002295); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2014
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 921 in Ohio → Look up another NPI →
Also registered at 300 Allen Bradley Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Louis Keppler, MDOrthopaedic Surgery Physician1235108119
- Hannah Wong, PTAPhysical Therapy Assistant1649148669
Verify Nicholas Knoble Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34.014321Check 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 90 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Ondansetron Odt60 claims
- Oxycodone Hcl49 claims
- Meloxicam47 claims
- Cefadroxil38 claims
- Pantoprazole Sodium25 claims
- Cephalexin12 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): 86.1 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: $193.69
4 payments; by number, the most common kind was food and beverage; the largest payer was Zimmer Biomet Holdings, 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 2 group practices
- Cleveland Orthopedic And Spine Institute, LLCMayfield Heights, OH
- Novacare Rehabilitation OF Ohio IncNiles, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Knoble Callahan among 921 orthopaedic surgery physician records in Ohio
Nicholas Knoble Callahan, DO is one of 921 orthopaedic surgery physician records with a practice address in Ohio. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 79% of them.
- NPI issued2014 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2004 among the 579 with a school on file
- Record last updated2026 · 59% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 orthopaedic surgery physician records list a practice address in Mayfield Heights
They are 6 of the 548 NPPES records with a practice address in Mayfield Heights, and 921 orthopaedic surgery physician records in Ohio.
All 921 in Ohio → Every provider in Mayfield Heights → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Robert Anschuetz, MDMayfield Heights, OH 441241154369338
- Robert Corn, M.D.Mayfield Heights, OH 441241427087907
- Robert Fumich, M.D.Mayfield Heights, OH 441241063694206
- Reuben Gobezie, MDCleveland, OH 441241295786770
- Mark Grubb, MDCleveland, OH 441241134111768
- Louis Keppler, MDMayfield Heights, OH 441241235108119
- Mary WerveyMayfield Heights, OH 441241790449189
- Gerald Yosowitz, MDPepper Pike, OH 441241073769550
Common questions
What is Nicholas Knoble Callahan, DO's NPI number?
Nicholas Knoble Callahan, DO's National Provider Identifier (NPI) is 1659783934, issued on May 21, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Knoble Callahan, DO located?
The NPPES record lists a practice address at 300 Allen Bradley Dr Ste 200, Mayfield Heights, OH, 44124. Phone: (844) 746-8537. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Knoble Callahan, DO's license?
NPPES lists Ohio license number 34.014321, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicholas Knoble Callahan, DO prescribe under Medicare Part D?
In 2024, Nicholas Knoble Callahan, DO had 295 Medicare Part D claims for 90 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Nicholas Knoble Callahan, DO's MIPS final score?
The 2023 MIPS final score is 86.1 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.