DR. NICHOLAS KNOBLE CALLAHAN DO
NPI 1659783934
Orthopaedic Surgery in Mayfield Heights, OH

Q: What is Nicholas Callahan's NPI number?

The NPI number for Nicholas Callahan is 1659783934. It was assigned to this individual provider in the NPPES registry on May 21, 2014.

Q: What is Nicholas Callahan's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Nicholas Callahan was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 21, 2014PECOS EnrolledAccepts Medicare Assignment

86.09/100

CMS Quality Rating

300 ALLEN BRADLEY DR STE 200, MAYFIELD HEIGHTS, OH 44124(844) 746-8537(216) 313-9166 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 28, 2026, Sep 16, 2025 (2 updates tracked since 2025).

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About Dr. Nicholas Knoble Callahan Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NICHOLAS KNOBLE CALLAHAN DO (NPI 1659783934) is an individual orthopaedic surgery provider in Mayfield Heights, Ohio, licensed in Ohio (34.014321) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, is affiliated with Uh Cleveland Medical Center, and maintains a secondary practice location in Mayfield Heights.

NPPES Registry Identity

NPI1659783934

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameDR. NICHOLAS KNOBLE CALLAHANCredential: DO

Location Address300 ALLEN BRADLEY DR STE 200Mayfield Heights, OH 44124-6130

Mailing Address300 Allen Bradley Dr Ste 200Mayfield Heights, OH 44124-6130 · (844) 746-8537 · Fax (216) 313-9166

Phone(844) 746-8537

Fax(216) 313-9166

Sole ProprietorNo

Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2014

Enumeration DateMay 21, 2014

Last NPPES UpdateJuly 28, 20262 updates tracked since enumeration

NPPES CertifiedJuly 28, 2026

✔ NPI 1659783934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in OH · 34.014321

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

300 ALLEN BRADLEY DR STE 200, Mayfield Heights, OH 44124

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Secondary Practice Location 1

Location 1300 Allen Bradley Dr Ste 250Mayfield Heights, OH 44124-6130 · Phone (444) 966-7846 · Fax (216) 785-2833

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nicholas Knoble Callahan Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092024950

PECOS Enrollment IDI20200610002295

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Nicholas Callahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cleveland Orthopedic And Spine Institute, LLC

Same address

Clinic/Center

300 ALLEN BRADLEY DR STE 200
Mayfield Heights, OH 44124

Reassigned Medicare billing, Ohio enrollment
21 clinicians in this Medicare group

NPI 1033988928 (844) 746-8537

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

838 services87 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

204 services145 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

96 services77 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

82 services57 patients

Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes 97110

This therapy involves exercises to boost strength, endurance, flexibility, and range of motion. Each session lasts 15 minutes. The goal is to improve physical function and overall health. It's a safe, beneficial method for enhancing well-being and fitness.

60 services15 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

59 services44 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

59 services33 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

57 services31 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

43 services27 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

41 services41 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

32 services23 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

31 services24 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

31 services23 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

25 services25 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

19 services18 patients

Replacement of thigh bone and hip joint with prosthesis 27130

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

17 services16 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Uh Cleveland Medical Center

Acute Care Hospitals · Cleveland, OH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360137

Location11100 Euclid AvenueCleveland, OH 44106 · Cuyahoga County

Emergency services Birthing friendly

Southwest General Health Center

Acute Care Hospitals · Middleburg Heights, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360155

Location18697 Bagley RoadMiddleburg Heights, OH 44130 · Cuyahoga County

Emergency services Birthing friendly

Cleveland Clinic

Acute Care Hospitals · Cleveland, OH

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360180

Location9500 Euclid AvenueCleveland, OH 44195 · Cuyahoga County

Emergency services Birthing friendly

Crystal Clinic Orthopaedic Center

Acute Care Hospitals · Akron, OH

5/5 CMS rating

OwnershipProprietary

CMS Certification Number360351

Location3557 Embassy ParkwayAkron, OH 44333 · Summit County

Lake Health Beachwood Medical Center

Acute Care Hospitals · Beachwood, OH

OwnershipProprietary

CMS Certification Number360367

Location25501 Chagrin BlvdBeachwood, OH 44122 · Cuyahoga County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44124 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$84.72 typical visit price

range $54.34 – $166.65

Typical copayment $21.18 (range $13.58 – $41.66)

Most-billed visit code 99203

Established Patient

$68.07 typical visit price

range $17.10 – $135.40

Typical copayment $17.01 (range $4.27 – $33.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.09/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.42

Promoting Interoperability

Improvement Activities

Cost

80.04

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CLEVELAND ORTHOPEDIC AND SPINE INSTITUTE, LLC

Clinic/Center

300 ALLEN BRADLEY DR STE 200
MAYFIELD HEIGHTS, OH 44124

Cuyahoga County (844) 746-8537

CLEVELAND ORTHOPEDIC AND SPINE INSTITUTE, LLC

Orthopaedic Surgery

300 ALLEN BRADLEY DR STE 200
MAYFIELD HEIGHTS, OH 44124

Cuyahoga County (330) 865-6956

HANNAH MARIE WONG PTA

Physical Therapy Assistant

300 ALLEN BRADLEY DR STE 200
MAYFIELD HEIGHTS, OH 44124

Cuyahoga County (216) 353-6959

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nicholas Callahan's NPI number?

The NPI number for Nicholas Callahan is 1659783934. It was assigned to this individual provider in the NPPES registry on May 21, 2014.

Where is Nicholas Callahan located?

Nicholas Callahan practices at 300 Allen Bradley Dr Ste 200, Mayfield Heights, OH 44124. The listed phone number is (844) 746-8537.

What is Nicholas Callahan's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Nicholas Callahan enrolled in Medicare?

Yes. Nicholas Callahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Nicholas Callahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Callahan reassigns Medicare benefits to Cleveland Orthopedic And Spine Institute, LLC (Mayfield Heights, OH). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Callahan accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and MedMutual list Nicholas Callahan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Nicholas Callahan affiliated with any hospitals?

According to CMS data, Nicholas Callahan is affiliated with Uh Cleveland Medical Center, Southwest General Health Center, Cleveland Clinic, Crystal Clinic Orthopaedic Center and Lake Health Beachwood Medical Center.

When was this NPI record last updated?

The NPPES record for Nicholas Callahan was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.