Steven Herf, M.D.
NPI 1821097841 · Endocrinology, Diabetes & Metabolism Physician · Peoria, AZ
Enrolled with Medicare as Order and Referring Only - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Herf, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Peoria, AZ (NPI 1821097841).
Provider details
- NPI number
- 1821097841
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 01028290B (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2005-07-20
- Last updated
- 2016-03-02
Frequently asked questions
- What is Steven Herf's NPI number?
- Steven Herf's National Provider Identifier (NPI) is 1821097841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Herf's specialty?
- Steven Herf is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Herf located?
- Steven Herf's practice location on file with NPPES is 12520 W Bajada Rd, Peoria, AZ 85383-2805.
- What is Steven Herf's phone number?
- The practice phone number listed in the NPPES registry for Steven Herf is (623) 476-2873.
- Does Steven Herf accept Medicare?
- Steven Herf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Herf's NPI active?
- Yes — Steven Herf's NPI (1821097841) is active in the NPPES registry as of the last update on 2016-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.