Dr. Grishma Joy, MD
- Medicare services, 2024
- 7,086
- Medicare patients, 2024
- 471
- Part D claims, 2024
- 420
- MIPS score, 2024
- 82
- Hospital affiliations
- 1
- Practice address
- 10710 Charter Drive, Suite 120, Columbia, MD 21044
- Practice phone
- Call (410) 772-7345
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Howard County Gastrointestinal Diagnostic Center
Surgery Center - Medicare-Certified · Columbia, Maryland
Find Dr. Joy's professional email, personal email and mobile number
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Dr. Grishma Joy is a gastroenterologist in Columbia, Maryland
Dr. Joy practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland.
Dr. Joy's NPI, 1336239656, was assigned on October 15, 2006. Dr. Joy graduated from Wayne State University School of Medicine in 2003. Dr. Joy holds Maryland license D0064949.
- NPI
- 1336239656NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527253632
- NPI enumeration date
- October 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (410) 772-7345
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grishma Joy practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland
Dr. Joy's primary practice is Howard County Gastrointestinal Diagnostic Center, at 10710 Charter Drive, Suite 120, Columbia, MD 21044. The practice phone is (410) 772-7345.
- Howard County Gastrointestinal Diagnostic Center10710 Charter Drive, Suite 120, Columbia, MD 21044Phone(410) 772-7345
Source: Dmand AI Affiliation Data
Dr. Grishma Joy is affiliated with 3 sites of care and 2 medical groups
Dr. Joy's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland. Dr. Joy is also affiliated with Johns Hopkins Howard County Medical Center. The medical group on file is Digestive Disease Associates. Dmand AI also links Dr. Joy to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Grishma Joy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Joy practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Howard County Gastrointestinal Diagnostic Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Grishma Joy is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. Joy's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Joy is licensed in Maryland.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
Gastroenterologists near Dr. Joy
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Grishma Joy billed Medicare for 7,086 services in 2024
CMS data shows 7,086 Medicare services from Dr. Joy across 16 procedure codes in 2024, for 471 Medicare patients. Medicare paid $191,350 for them.
Dr. Joy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 02024: 6,300
- Office and hospital visits
- 2023: 4432024: 442No change
- Surgery
- 2023: 2532024: 2779%
- Other services
- 2023: 442024: 465%
- Tests and treatments
- 2023: 142024: 2150%
Where Dr. Joy's Medicare services took place, 2024
- In an office6,76395%
- In a facility3235%
Dr. Joy compared with the Maryland median for gastroenterologists, 2024
- Dr. Joy
- Maryland median
- Medicare services
- 7,086vs 66810.6 times
- Medicare patients
- 471vs 39021% above
- Part D claims
- 315vs 39220% below
Medians across 396 gastroenterologists in Maryland with Dmand AI profiles that report each measure.
Dr. Joy's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Grishma Joy treated 471 Medicare patients in 2024, average age 73
CMS counts 471 Medicare patients who saw Dr. Joy in 2024. The largest group is 65 to 74, with 252 patients. 75% of them have high cholesterol, and 64% have high blood pressure. 5% are also on Medicaid. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Joy's median patient age at 59, with 81% women.
Dr. Joy's Medicare patients by age, 2024
Dr. Joy's Medicare patients by sex, 2024
- Women39484%
- Men7716%
Chronic conditions among Dr. Joy's Medicare patients, 2024
- High cholesterol75%
- High blood pressure64%
- Arthritis46%
- Osteoporosis26%
- Anxiety25%
- Mood disorders23%
- Depression20%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Joy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women81%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grishma Joy wrote 420 Medicare Part D claims in 2024
In 2024, Dr. Joy wrote 420 Medicare Part D claims for 196 patients. 91% of them were for generic drugs. CMS names the drug for 315 of them, across 9 drugs with 11 or more claims each, at $9,497 in total drug cost. In 2023, CMS named 264 claims across 8 drugs.
Dr. Joy's Part D claims by kind of drug, 2024
- Generic384 claims91%
- Brand-name36 claims9%
Dr. Joy's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Joy's Part D claims, 2024
- Antibiotics3%12 of 420 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2642024: 31519%
Drugs named by CMS: 9 in 2024, 8 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Grishma Joy scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Joy for performance year 2024, reported as part of a group. Dr. Joy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Joy as offering telehealth. CMS counts 109 procedures of colonoscopy by Dr. Joy, more than 82% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Joy's MIPS scores, performance year 2024
- 82of 100Final score
- 59.4of 100Quality
- 97of 100Promoting Interoperability
- 40of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Joy ranks in Medicare procedure volume
- Colonoscopy
- 82nd percentile109 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 75th percentile93 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Grishma Joy received $10,256 in industry payments from 2016 to 2025
CMS Open Payments shows 116 general payments to Dr. Joy from 19 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 78% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $8,122.
General payments to Dr. Joy by program year, 2016 to 2025
General payments to Dr. Joy by kind, 2016 to 2025
- Consulting fees$8,00078%
- Food and beverage$2,23922%
- Education$170%
Companies that paid Dr. Joy the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Grishma Joy graduated from Wayne State University School of Medicine
Dr. Joy graduated from Wayne State University School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Grishma Joy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Grishma Joy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Grishma Joy's NPI number?
Dr. Grishma Joy's NPI number is 1336239656. It was assigned on October 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Grishma Joy?
Dr. Grishma Joy is a gastroenterologist in Columbia, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Grishma Joy practice?
Dr. Joy practices at 10710 Charter Drive, Suite 120, Columbia, MD 21044. Dr. Joy's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland. Dmand AI also links Dr. Joy to 1 group practice or clinic and 1 medical group.
What is Dr. Grishma Joy's office phone number?
The practice phone on file for Dr. Joy is (410) 772-7345.
What is Dr. Grishma Joy's medical license number?
Dr. Joy holds Maryland license D0064949.
Which hospitals is Dr. Grishma Joy affiliated with?
Dr. Joy is affiliated with Johns Hopkins Howard County Medical Center.
What medical group is Dr. Grishma Joy part of?
Dr. Joy is linked to Digestive Disease Associates. Dmand AI links Dr. Joy to 1 more medical group.
Does Dr. Grishma Joy accept Medicare?
Yes. CMS data shows Dr. Joy billed Medicare for 7,086 services in 2024, and Dr. Joy accepts Medicare assignment.
Does Dr. Grishma Joy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Joy as offering telehealth services.
What is Dr. Grishma Joy's MIPS score?
Dr. Joy's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Grishma Joy see?
CMS counts 471 Medicare patients who saw Dr. Joy in 2024, with an average age of 73.
What services does Dr. Grishma Joy bill to Medicare?
In 2024, Dr. Joy's most billed Medicare services were injected or infused drug (J3380), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Grishma Joy go to medical school?
Dr. Joy graduated from Wayne State University School of Medicine in 2003.
What drugs does Dr. Grishma Joy prescribe most?
In 2024 Medicare Part D data, Dr. Joy's most prescribed drugs by claims were Peg 3350-Electrolyte, Pantoprazole Sodium and Omeprazole.
Has Dr. Grishma Joy received payments from drug or device companies?
CMS Open Payments shows $10,256 in general payments to Dr. Joy from 19 companies from 2016 to 2025. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. Grishma Joy been practicing?
Dr. Joy graduated from medical school in 2003, 23 years ago.
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