Doctor profile · Federal record
Dr. Maria Johnson, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Hartford, CT
- NPI 1033300728
- Accepts Medicare
- MIPS 83.2 / 100 · 2023
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
85 Seymour St, Suite 1000
Hartford, CT 061065501
(860) 246-2571
fax (860) 246-3691
Credentials & registration
- NPI registered
- August 2007 — 19 yrs on file
- Profile last updated
- August 1, 2012
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Connecticut #048571
- Medicaid
- CT #008040276
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033300728. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
261
Distinct HCPCS
9
Medicare allowed
$33,285
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 61 | 50 | $130 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 51 | 51 | $157 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 46 | 46 | $108 | |
J7050 |
Infusion, normal saline solution, 250 cc | 23 | 12 | $1 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 22 | 21 | $265 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 19 | $136 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 13 | $96 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 13 | 12 | $83 | |
99284 |
Emergency department visit with moderate level of medical decision making | 12 | 12 | $126 |
In context: peer comparison
Among 9 peers in Hartford Gastroenterology Physician, average services per provider: 35. This provider delivers 7.5× the peer median.Open Payments
Industry payments received
All-time total
$1,046
Transactions
49
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 16 | $316.16 | |
| Lilly USA, LLC | 5 | $110.97 | |
| Takeda Pharmaceuticals U.S.A., INC. | 3 | $94.98 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 5 | $93.05 | |
| Ardelyx, INC. | 3 | $68.27 | |
| Celgene Corporation | 3 | $63.59 | |
| Ironwood Pharmaceuticals, INC | 3 | $59.15 | |
| Phathom Pharmaceuticals, INC. | 3 | $52.63 | |
| Janssen Biotech, INC. | 2 | $44.25 | |
| Qol Medical, LLC | 1 | $36.27 | |
| Exact Sciences Corporation | 1 | $31.61 | |
| Intercept Pharmaceuticals, INC. | 1 | $22.57 | |
| Regeneron Healthcare Solutions, INC. | 1 | $18.42 | |
| Pfizer INC. | 1 | $17.89 | |
| Celltrion USA INC. | 1 | $16.37 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
997
Patients
477
Total drug cost
$269,298
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 214 | 95 | $6,649 |
| Omeprazole | Generic | 202 | 78 | $3,500 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 135 | 133 | $10,926 |
| Linzess (Linaclotide) | Brand | 91 | 33 | $127,916 |
| Pantoprazole Sodium | Generic | 77 | 19 | $1,449 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 67 | 66 | $1,329 |
| Sucralfate | Generic | 53 | 18 | $3,876 |
| Rabeprazole Sodium | Generic | 42 | 17 | $4,123 |
| Mesalamine ER (Mesalamine) | Brand | 23 | 0 | $10,492 |
| Xifaxan (Rifaximin) | Brand | 19 | 18 | $41,583 |
Hospital affiliations
Frequently asked questions
What is Dr. Maria Johnson's medical specialty?
Dr. Maria Johnson practices Gastroenterology Physician in Hartford, CT.
Where does Dr. Maria Johnson practice?
Dr. Maria Johnson practices at 85 Seymour St, Hartford, CT 061065501. Office phone: 8602462571.
What is Dr. Maria Johnson's NPI?
Dr. Maria Johnson's National Provider Identifier (NPI) is 1033300728, issued by NPPES.
Does Dr. Maria Johnson accept Medicare assignment?
Yes. Dr. Maria Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Maria Johnson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.