What is John Nash's NPI number?

John Nash's National Provider Identifier (NPI) is 1821086281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Nash's specialty?

John Nash is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).

Where is John Nash located?

John Nash's practice location on file with NPPES is 2415 Mccallie Ave, Chattanooga, TN 37404-3322.

What is John Nash's phone number?

The practice phone number listed in the NPPES registry for John Nash is (423) 624-2696.

Does John Nash accept Medicare?

John Nash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is John Nash's NPI active?

Yes — John Nash's NPI (1821086281) is active in the NPPES registry as of the last update on 2015-05-12.

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John Nash, MD

NPI 1821086281 · Orthopaedic Surgery Physician · Chattanooga, TN

John Nash, MD is a Orthopaedic Surgery Physician provider in Chattanooga, TN (NPI 1821086281).

Provider details

NPI number: 1821086281
Entity type: Individual
Primary specialty: Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 026978 (TN)

Practice location

2415 Mccallie Ave

Chattanooga, TN 37404-3322

Phone: (423) 624-2696

Fax: (423) 697-2055

Street-level locationGet directions

More TN providers

Mailing address

2415 Mccallie Ave

Chattanooga, TN 37404-3322

Specialties & taxonomies

Orthopaedic Surgery PhysicianPrimary207X00000XLicense 026978 (TN)
Allopathic & Osteopathic Physicians
Orthopaedic Surgery Physician207X00000XLicense G73805 (CA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(93/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
21 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
3,086 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	694	$116
X-Ray of Knee, 4 Or More Views73564	377	$42
X-Ray of Knee, 3 Views73562	303	$36
Aspiration And/Or Injection of Fluid From Large Joint20610	280	$59
Mri Scan of Lower Spinal Canal Without Contrast72148	270	$87
Mri Scan of Arm Joint Without Contrast73221	187	$91

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Amoxicillin	424	193
Meloxicam	372	171
Oxycodone Hcl	135	106
Methylprednisolone	102	98
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	102	77
Ondansetron Hcl	91	86
Naloxone Hcl	85	74

Enumerated: 2005-10-11
Last updated: 2015-05-12

Frequently asked questions

What is John Nash's NPI number?: John Nash's National Provider Identifier (NPI) is 1821086281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Nash's specialty?: John Nash is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
Where is John Nash located?: John Nash's practice location on file with NPPES is 2415 Mccallie Ave, Chattanooga, TN 37404-3322.
What is John Nash's phone number?: The practice phone number listed in the NPPES registry for John Nash is (423) 624-2696.
Does John Nash accept Medicare?: John Nash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is John Nash's NPI active?: Yes — John Nash's NPI (1821086281) is active in the NPPES registry as of the last update on 2015-05-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)