John Chastain, MD
NPI 1801915715 · Otolaryngology Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Chastain, MD is a Otolaryngology Physician provider in Tucson, AZ (NPI 1801915715).
Provider details
- NPI number
- 1801915715
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 51562 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,869 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 380 | $12 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 290 | $88 |
| Professional Service for Multiple Injections of Allergen95117 | 181 | $12 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 176 | $124 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 156 | $180 |
| Removal of Impacted Ear Wax69210 | 151 | $46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ipratropium Bromide | 217 | 109 |
| Montelukast Sodium | 100 | 40 |
| Fluticasone Propionate | 90 | 39 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 87 | 75 |
| Methylprednisolone | 65 | 54 |
| Mupirocin | 60 | 50 |
| Omeprazole | 55 | 23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$372 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1358 W. Orange GroveTucson, AZ 85704Phone: (520) 575-1272Fax: (520) 575-1789
Registry dates
- Enumerated
- 2007-03-29
- Last updated
- 2019-08-12
Frequently asked questions
- What is John Chastain's NPI number?
- John Chastain's National Provider Identifier (NPI) is 1801915715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chastain's specialty?
- John Chastain is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is John Chastain located?
- John Chastain's practice location on file with NPPES is 2121 N Craycroft Rd Bldg 5, Tucson, AZ 85712-2801.
- What is John Chastain's phone number?
- The practice phone number listed in the NPPES registry for John Chastain is (520) 296-8500.
- Does John Chastain accept Medicare?
- John Chastain is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Chastain's NPI active?
- Yes — John Chastain's NPI (1801915715) is active in the NPPES registry as of the last update on 2019-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.