John Bradfield Gerlach, MD
Emergency Medicine Physician · Tucson, AZ
John Bradfield Gerlach, MD is an emergency medicine physician with a practice address in Tucson, Arizona, and NPI 1043912678, issued on Mar 20, 2023. Check the license (Arizona R82717, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Bradfield Gerlach
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- R82717 AZ
199099 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1625 N Campbell Ave, Tucson, AZ 85719
- Phone
- (520) 694-8888
- Enumerated
- Mar 20, 2023
- Record last updated
- Jul 1, 2026
- Medicare enrollment
- Enrolled (PECOS I20260409002028); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,494 in Arizona → Look up another NPI →
Also registered at 1625 N Campbell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Bradfield Gerlach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license R82717Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average emergency medicine physician in 2024
336 Medicare Part D claims for 40 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium26 claims
- Lisinopril18 claims
- Nortriptyline Hcl15 claims
- Levothyroxine Sodium14 claims
- Biktarvy12 claims
- Hydrocodone-Acetaminophen11 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
- Santa Rosa Community Health CentersSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Bradfield Gerlach among 1,494 emergency medicine physician records in Arizona
John Bradfield Gerlach, MD is one of 1,494 emergency medicine physician records with a practice address in Arizona. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 92% of them.
- NPI issued2023 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2023 · median 2014 among the 828 with a school on file
- Record last updated2026 · 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
422 emergency medicine physician records list a practice address in Tucson
They are 422 of the 18,788 NPPES records with a practice address in Tucson, and 1,494 emergency medicine physician records in Arizona.
All 1,494 in Arizona → Every provider in Tucson → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Francisco AndradeTucson, AZ 857191306377247
- Jeremy Carter, D.O.Tucson, AZ 857191619387271
- Eric Chase, M.D.Tucson, AZ 857191881857910
- James Dahle, MDTucson, AZ 857191811963242
- Bridget Dyer, M.D.Tucson, AZ 857191942473467
- Leah Gilbert, M.D.Tucson, AZ 857191699904185
- Patrick Hollinger, M.D.Tucson, AZ 857191134569957
- Cameron Hypes, M.D.Tucson, AZ 857191376862425
Common questions
What is John Bradfield Gerlach, MD's NPI number?
John Bradfield Gerlach, MD's National Provider Identifier (NPI) is 1043912678, issued on Mar 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is John Bradfield Gerlach, MD located?
The NPPES record lists a practice address at 1625 N Campbell Ave, Tucson, AZ, 85719. Phone: (520) 694-8888. Providers update this record themselves, so call before visiting.
How can I verify John Bradfield Gerlach, MD's license?
NPPES lists Arizona license number R82717, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Bradfield Gerlach, MD prescribe under Medicare Part D?
In 2024, John Bradfield Gerlach, MD had 336 Medicare Part D claims for 40 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.