John Schaller, M.D., M.P.H.
NPI 1093830333 · Preventive Medicine/Occupational Environmental Medicine Physician · Phoenix, AZ
John Schaller, M.D., M.P.H. is a Preventive Medicine/Occupational Environmental Medicine Physician provider in Phoenix, AZ (NPI 1093830333).
Provider details
- NPI number
- 1093830333
- Entity type
- Individual
- Primary specialty
- Preventive Medicine/Occupational Environmental Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 17949 (AZ)
Specialties & taxonomies
- Preventive Medicine/Occupational Environmental Medicine PhysicianPrimary2083P0500XLicense G66859 (CA)
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,742 across 3 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
Registry dates
- Enumerated
- 2007-03-19
- Last updated
- 2025-09-11
Frequently asked questions
- What is John Schaller's NPI number?
- John Schaller's National Provider Identifier (NPI) is 1093830333, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Schaller's specialty?
- John Schaller is listed in the NPPES registry with a primary specialty of Preventive Medicine/Occupational Environmental Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Schaller located?
- John Schaller's practice location on file with NPPES is 4645 E Cotton Center Blvd Bldg 1 # 200, Phoenix, AZ 85040-8874.
- What is John Schaller's phone number?
- The practice phone number listed in the NPPES registry for John Schaller is (602) 659-1123.
- Is John Schaller's NPI active?
- Yes — John Schaller's NPI (1093830333) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.