Mark Eisner, MD
Gastroenterology Physician · Zephyrhills, FL
Mark Eisner, MD is a gastroenterology physician with a practice address in Zephyrhills, Florida, and NPI 1902815103, issued on Aug 5, 2006. Check the license (Florida ME57600, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Mark Eisner
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- ME57600 FL
Self-reported in NPPES; status is on the state search - Practice location
- 38135 Market Square, Zephyrhills, FL 33542
- Phone
- (813) 780-7534
- Enumerated
- Aug 5, 2006
- Record last updated
- Aug 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (813) 715-1810
- Medicaid ID
- 063354200 FL
- Medicare enrollment
- Enrolled (PECOS I20100322000769); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1985
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,513 in Florida → Look up another NPI →
Also registered at 38135 Market Square
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dominic Gonzalez, MDFamily Medicine Physician1285641688
- Paul Hughes, MDFamily Medicine Physician1265448229
- Nancy Paladino, ARNPNurse Practitioner1083621486
Verify Mark Eisner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME57600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,600 Medicare Part D claims for 956 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Omeprazole548 claims
- Pantoprazole Sodium357 claims
- Clenpiq216 claims
- Sod Sulf-Potass Sulf-Mag Sulf169 claims
- Gavilyte-G98 claims
- Famotidine86 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: $2,561.32
146 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 one group practice
- Ohi West Medical Group II LLCWesley Chapel, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Eisner among 1,513 gastroenterology physician records in Florida
Mark Eisner, MD is one of 1,513 gastroenterology physician records with a practice address in Florida. 87% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 45% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1985 · median 2000 among the 1,156 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Florida
There are 1,513 gastroenterology physician records in Florida.
All 1,513 in Florida → Every provider in Zephyrhills → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Tawfik Chami, MDZephyrhills, FL 335421730198052
- Randhir Jesudoss, M.DZephyrhills, FL 335421033418843
- Thomas John, MDZephyrhills, FL 335421497837033
- Kalyani Meduri, M.D.Zephyrhills, FL 335421558513168
- Maher Salam, M.D.Zephyrhills, FL 335421114002680
- Madhusudhan Sanaka, MDZephyrhills, FL 335421679518286
- Soloman Singh, MDZephyrhills, FL 335421700981545
- Yawer Nensey, MDZephyrhills, FL 335411861459166
Common questions
What is Mark Eisner, MD's NPI number?
Mark Eisner, MD's National Provider Identifier (NPI) is 1902815103, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Eisner, MD located?
The NPPES record lists a practice address at 38135 Market Square, Zephyrhills, FL, 33542. Phone: (813) 780-7534. Providers update this record themselves, so call before visiting.
How can I verify Mark Eisner, MD's license?
NPPES lists Florida license number ME57600, 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 Mark Eisner, MD prescribe under Medicare Part D?
In 2024, Mark Eisner, MD had 2,600 Medicare Part D claims for 956 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.