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Charles Preston, M.D.
NPI 1427219906 · Internal Medicine Physician · Phoenix, AZ
Charles Preston, M.D. is a Internal Medicine Physician provider in Phoenix, AZ (NPI 1427219906).
Provider details
- NPI number
- 1427219906
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R70474 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
350 W Thomas Rd
Attn: Academic Affairs
Phoenix, AZ 85013-4409
Phone: (602) 406-3538
Street-level locationGet directions
Mailing address
350 W Thomas Rd
Phoenix, AZ 85013-4409
Registry dates
- Enumerated
- 2008-06-18
- Last updated
- 2008-06-18
Frequently asked questions
- What is Charles Preston's NPI number?
- Charles Preston's National Provider Identifier (NPI) is 1427219906, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Preston's specialty?
- Charles Preston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Preston located?
- Charles Preston's practice location on file with NPPES is 350 W Thomas Rd, Phoenix, AZ 85013-4409.
- What is Charles Preston's phone number?
- The practice phone number listed in the NPPES registry for Charles Preston is (602) 406-3538.
- Is Charles Preston's NPI active?
- Yes — Charles Preston's NPI (1427219906) is active in the NPPES registry as of the last update on 2008-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.