Doctor profile · Federal record
Dr. Mark Eisner, MD
Gastroenterology Physician (CMS: Gastroenterology) · Zephyrhills, FL
- NPI 1902815103
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
38135 Market Square
Zephyrhills, FL 33542
(813) 780-7534
fax (813) 715-1810
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- August 25, 2021
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Florida #ME57600
- Medicaid
- FL #063354200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902815103. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,365
Distinct HCPCS
10
Medicare allowed
$176,250
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 776 | 412 | $125 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 147 | 137 | $77 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 78 | 78 | $161 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 59 | 59 | $153 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 58 | 55 | $147 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 57 | 55 | $178 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 42 | 42 | $88 | |
76981 |
Ultrasound scan of organ tissue for measuring elasticity | 40 | 40 | $98 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 39 | 37 | $252 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 26 | 26 | $177 |
In context: peer comparison
Among 5 peers in Zephyrhills Gastroenterology Physician, average services per provider: 74. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$2,561
Transactions
144
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 59 | $1,051.29 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 17 | $321.26 | |
| Pfizer INC. | 22 | $239.68 | |
| Janssen Biotech, INC. | 13 | $155.51 | |
| Lilly USA, LLC | 5 | $143.21 | |
| Ironwood Pharmaceuticals, INC | 6 | $141.66 | |
| Aimmune Therapeutics, INC. | 6 | $121.46 | |
| Phathom Pharmaceuticals, INC. | 3 | $71.30 | |
| Ardelyx, INC. | 3 | $57.76 | |
| Celgene Corporation | 3 | $55.30 | |
| Ipsen Biopharmaceuticals, INC | 2 | $50.89 | |
| Madrigal Pharmaceuticals | 1 | $39.56 | |
| Intercept Pharmaceuticals, INC. | 2 | $36.48 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $31.31 | |
| RedHill Biopharma INC. | 1 | $15.30 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,761
Patients
907
Total drug cost
$243,295
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 477 | 162 | $5,758 |
| Pantoprazole Sodium | Generic | 397 | 122 | $7,077 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 272 | 260 | $4,661 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 87 | 85 | $1,934 |
| Colestipol Hcl | Generic | 85 | 41 | $18,087 |
| Dicyclomine Hcl | Generic | 81 | 44 | $2,066 |
| Famotidine | Generic | 54 | 27 | $994 |
| Creon (Lipase/Protease/Amylase) | Brand | 50 | 11 | $187,413 |
| Sucralfate | Generic | 48 | 19 | $1,826 |
| Ondansetron Hcl | Generic | 41 | 18 | $1,853 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Eisner's medical specialty?
Dr. Mark Eisner practices Gastroenterology Physician in Zephyrhills, FL.
Where does Dr. Mark Eisner practice?
Dr. Mark Eisner practices at 38135 Market Square, Zephyrhills, FL 33542. Office phone: 8137807534.
What is Dr. Mark Eisner's NPI?
Dr. Mark Eisner's National Provider Identifier (NPI) is 1902815103, issued by NPPES.
Does Dr. Mark Eisner accept Medicare assignment?
Yes. Dr. Mark Eisner accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Eisner commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.