William J. Friedrich, DO
Emergency Medicine Physician · San Antonio, TX
William J. Friedrich, DO is an emergency medicine physician with a practice address in San Antonio, Texas, and NPI 1417921479, issued on Feb 15, 2006. Check the license (Texas J6440, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- William J. Friedrich
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- J6440 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1518 Hearthstone, San Antonio, TX 78258
- Phone
- (210) 408-2079
- Enumerated
- Feb 15, 2006
- Record last updated
- May 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 031167203 TX
- Medicare enrollment
- Enrolled (PECOS I20041116000107); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Verify William J. Friedrich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J6440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average emergency medicine physician in 2024
22 Medicare Part D claims for 18 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Concord Medical Group OF Texas PLLCHondo, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William J. Friedrich among 4,885 emergency medicine physician records in Texas
William J. Friedrich, DO is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 67% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1993 · median 2013 among the 2,779 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
400 emergency medicine physician records list a practice address in San Antonio
They are 400 of the 37,749 NPPES records with a practice address in San Antonio, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in San Antonio → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Allen, D.O.San Antonio, TX 782581225189988
- Charles FlowersSan Antonio, TX 782581346701901
- Jennifer Gonzales, D.O.San Antonio, TX 782581598991671
- Jamie Jaqua, MDSan Antonio, TX 782581639360811
- Nuha Kadri, MDSan Antonio, TX 782581235717752
- Richard Mendelssohn, M.D.San Antonio, TX 782581295770931
- John Rayfield, MDSan Antonio, TX 782581972594588
- Swetha Sridhar, M.D.San Antonio, TX 782581356553432
Common questions
What is William J. Friedrich, DO's NPI number?
William J. Friedrich, DO's National Provider Identifier (NPI) is 1417921479, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Friedrich, DO located?
The NPPES record lists a practice address at 1518 Hearthstone, San Antonio, TX, 78258. Phone: (210) 408-2079. Providers update this record themselves, so call before visiting.
How can I verify William J. Friedrich, DO's license?
NPPES lists Texas license number J6440, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William J. Friedrich, DO prescribe under Medicare Part D?
In 2024, William J. Friedrich, DO had 22 Medicare Part D claims for 18 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.