Doctor profile · Federal record
Dr. Grishma Joy, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Columbia, MD
- NPI 1336239656
- Accepts Medicare
- MIPS 10.2 / 100 · 2023
- 23 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
10710 Charter Dr Ste 110
Columbia, MD 210443258
(410) 992-9797
fax (410) 730-0942 - Additional location
-
110 Irving St Nw, Room 3A-3M
Washington, DC 200103017
(202) 877-6280
fax (202) 877-8163
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- October 3, 2017
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Maryland #D0064949
- Medicaid
- MD #563207200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336239656. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
754
Distinct HCPCS
10
Medicare allowed
$98,480
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 149 | 124 | $94 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 118 | 91 | $135 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 87 | 87 | $136 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 86 | 84 | $100 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 67 | 66 | $268 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 44 | 44 | $116 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 39 | 39 | $171 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 24 | 24 | $68 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 24 | 24 | $183 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 21 | 20 | $88 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 79. This provider delivers 9.5× the peer median.Open Payments
Industry payments received
All-time total
$559
Transactions
25
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 11 | $229.31 | |
| Janssen Biotech, Inc. | 4 | $108.96 | |
| Daiichi Sankyo Inc. | 2 | $59.60 | |
| PFIZER INC. | 3 | $59.06 | |
| Madrigal Pharmaceuticals | 1 | $29.34 | |
| Ardelyx, Inc. | 1 | $21.52 | |
| Micro-tech Endoscopy USA, Inc. | 1 | $21.52 | |
| Celgene Corporation | 1 | $15.19 | |
| EAGLE PHARMACEUTICALS, INC. | 1 | $14.65 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
264
Patients
162
Total drug cost
$9,765
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 73 | 72 | $1,672 |
| Pantoprazole Sodium | Generic | 53 | 22 | $1,072 |
| Omeprazole | Generic | 40 | 22 | $771 |
| Ondansetron Odt (Ondansetron) | Brand | 30 | 29 | $214 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 20 | 0 | $2,097 |
| Famotidine | Generic | 18 | 0 | $415 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 17 | 17 | $2,908 |
| Esomeprazole Magnesium | Generic | 13 | 0 | $616 |
Frequently asked questions
What is Dr. Grishma Joy's medical specialty?
Dr. Grishma Joy practices Gastroenterology Physician in Columbia, MD.
Where does Dr. Grishma Joy practice?
Dr. Grishma Joy practices at 10710 Charter Dr Ste 110, Columbia, MD 210443258. Office phone: 4109929797.
What is Dr. Grishma Joy's NPI?
Dr. Grishma Joy's National Provider Identifier (NPI) is 1336239656, issued by NPPES.
Does Dr. Grishma Joy accept Medicare assignment?
Yes. Dr. Grishma Joy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Grishma Joy commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.