William Friedrich, DO
NPI 1417921479 · Emergency Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Friedrich, DO is a Emergency Medicine Physician provider in San Antonio, TX (NPI 1417921479).
Provider details
- NPI number
- 1417921479
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- J6440 (TX)
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
- 2006-02-15
- Last updated
- 2020-05-20
- Certified
- 2020-05-20
Frequently asked questions
- What is William Friedrich's NPI number?
- William Friedrich's National Provider Identifier (NPI) is 1417921479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Friedrich's specialty?
- William Friedrich is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Friedrich located?
- William Friedrich's practice location on file with NPPES is 1518 Hearthstone, San Antonio, TX 78258.
- What is William Friedrich's phone number?
- The practice phone number listed in the NPPES registry for William Friedrich is (210) 408-2079.
- Does William Friedrich accept Medicare?
- William Friedrich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Friedrich's NPI active?
- Yes — William Friedrich's NPI (1417921479) is active in the NPPES registry as of the last update on 2020-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.