Mary Branan Ennis Zahn, M.D.
Emergency Medicine Physician · Jacksonville, FL
Mary Branan Ennis Zahn, M.D. is an emergency medicine physician with a practice address in Jacksonville, Florida, and NPI 1093916116, issued on May 29, 2007. Check the license (Florida ME 107442, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Mary Branan Ennis Zahn
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- ME 107442 FL
63859 GA
Self-reported in NPPES; status is on the state search - Practice location
- 820 Prudential Dr, Jacksonville, FL 32207
- Phone
- (904) 396-5682
- Enumerated
- May 29, 2007
- Record last updated
- Nov 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid IDs
- 002687800 FL
643928689A GA - Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,034 in Florida → Look up another NPI →
Also registered at 820 Prudential Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sarah Brinkley, RNRegistered Nurse1013529676
Verify Mary Branan Ennis Zahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME 107442Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average emergency medicine physician in 2024
246 Medicare Part D claims for 136 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Ondansetron Odt32 claims
- Cephalexin24 claims
- Tramadol Hcl24 claims
- Azithromycin15 claims
- Hydrocodone-Acetaminophen13 claims
- Prednisone12 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: $20.40
1 payment: food and beverage; the largest payer was Organogenesis 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.
Mary Branan Ennis Zahn among 4,034 emergency medicine physician records in Florida
Mary Branan Ennis Zahn, M.D. is one of 4,034 emergency medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 38% of them.
- NPI issued2007 · 38% of these records are older, 55% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2011 · 56% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
365 emergency medicine physician records list a practice address in Jacksonville
They are 365 of the 24,194 NPPES records with a practice address in Jacksonville, and 4,034 emergency medicine physician records in Florida.
All 4,034 in Florida → Every provider in Jacksonville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Rosemarie Abad, MDJacksonville, FL 322071124083134
- Ian Caccam, M.D.Jacksonville, FL 322071699765131
- Lisa D'Amico, MDJacksonville, FL 322071508824657
- Doreen Dargon, MDJacksonville, FL 322071790701902
- Michael Fletcher, MDJacksonville, FL 322071023036118
- Andrew Forgash, MDJacksonville, FL 322071174567911
- Laura Grippa, MDJacksonville, FL 322071225062813
- Carlos Guevarra, M.D.Jacksonville, FL 322071811960578
Common questions
What is Mary Branan Ennis Zahn, M.D.'s NPI number?
Mary Branan Ennis Zahn, M.D.'s National Provider Identifier (NPI) is 1093916116, issued on May 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Branan Ennis Zahn, M.D. located?
The NPPES record lists a practice address at 820 Prudential Dr, Jacksonville, FL, 32207. Phone: (904) 396-5682. Providers update this record themselves, so call before visiting.
How can I verify Mary Branan Ennis Zahn, M.D.'s license?
NPPES lists Florida license number ME 107442, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Branan Ennis Zahn, M.D. prescribe under Medicare Part D?
In 2024, Mary Branan Ennis Zahn, M.D. had 246 Medicare Part D claims for 136 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.