Jonathan Wynn Hemmert, MD
Emergency Medicine Physician · Houston, TX
Jonathan Wynn Hemmert, MD is an emergency medicine physician with a practice address in Houston, Texas, and NPI 1588827455, issued on Jul 9, 2008. Check the license (Texas N8791, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan Wynn Hemmert
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- N8791 TX
Self-reported in NPPES; status is on the state search - Practice location
- 837 FM 1960 RD W, Houston, TX 77090
- Phone
- (281) 453-7150
- Enumerated
- Jul 9, 2008
- Record last updated
- Apr 20, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (281) 453-7155
- Medicare enrollment
- Enrolled (PECOS I20111019000060); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 837 FM 1960 RD W
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tami Berckenhoff, PAMedical Physician Assistant1801955893
- Alexander Nguyen, MDInternal Medicine Physician1528001930
- Sydney Payne, PAPhysician Assistant1730364209
- Hari Susarla, M.D.Internal Medicine Physician1700873262
- Anthony Yee-Young, M.D.Family Medicine Physician1861431934
Verify Jonathan Wynn Hemmert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N8791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average emergency medicine physician in 2024
130 Medicare Part D claims for 70 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Acetaminophen-Codeine17 claims
- Azithromycin14 claims
- Sulfamethoxazole-Trimethoprim14 claims
- Cephalexin12 claims
- Albuterol Sulfate Hfa11 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.
Industry payments in 2024: $14.55
1 payment: food and beverage; the largest payer was Pfizer Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Houston ER Physicians, LLCHouston, TX
- Rayford ER Group PLLCSpring, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Wynn Hemmert among 4,885 emergency medicine physician records in Texas
Jonathan Wynn Hemmert, MD 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 2008, is newer than 41% of them.
- NPI issued2008 · 41% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2008 · median 2013 among the 2,779 with a school on file
- Record last updated2015 · 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).
818 emergency medicine physician records list a practice address in Houston
They are 818 of the 61,221 NPPES records with a practice address in Houston, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Houston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Phu CaoHouston, TX 770901497179626
- Elizabeth Fair, MDHouston, TX 770901487753638
- Vanessa Lauck, M.D.Houston, TX 770901164665287
- Dorothy Lemecha, DOHouston, TX 770901578636270
- Nosson Lerner, MDHouston, TX 770901942836077
- Param Maewal, M.D.Houston, TX 770901942305941
- Huzefa Mogri, MDHouston, TX 770901033458880
- Julia Nielsen, MDHouston, TX 770901235690496
Common questions
What is Jonathan Wynn Hemmert, MD's NPI number?
Jonathan Wynn Hemmert, MD's National Provider Identifier (NPI) is 1588827455, issued on Jul 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Wynn Hemmert, MD located?
The NPPES record lists a practice address at 837 FM 1960 RD W, Houston, TX, 77090. Phone: (281) 453-7150. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Wynn Hemmert, MD's license?
NPPES lists Texas license number N8791, 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 Jonathan Wynn Hemmert, MD prescribe under Medicare Part D?
In 2024, Jonathan Wynn Hemmert, MD had 130 Medicare Part D claims for 70 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.